VETIVER
Informações
- Nome popular: Vetiver
- Nome científico: Vetiveria zizanoides L.
- Aroma: O aroma de Vetiveria zizanoides L. é amadeirado e ligeiramente defumado, com notas terrosas e herbais. É um aroma profundo e complexo, muitas vezes descrito como masculino e sofisticado. É comumente utilizado em perfumes e fragrâncias devido à sua fixação duradoura e capacidade de adicionar profundidade e riqueza a uma composição.
- Estudos com propriedades confirmadas: 35
Por favor, leia com atenção!
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Antes de começar a usar esta ou qualquer página da nossa base de conhecimento sobre óleos essenciais, por favor, leia atentamente as orientações e termos de uso na página uso da base de conhecimento, onde você obterá informações sobre como estes estudos foram encontrados, classificados e outros dados relevantes.
Propriedades
A seguir, você encontra a lista de propriedades e funções do óleo essencial de vetiver, que foram comprovadas por estudos científicos. Para obter mais informações sobre cada propriedade, clique em seu nome. Por favor, tenha em mente que os resultados apresentados podem incluir não somente o uso humano, mas também veterinário, ambiental e de análise bioquímica.
Durante as nossas consultas agregamos principalmente dois tipos de estudos: randomizados controlados e revisões sistemáticas. No entanto, é provável que você encontre outros tipos de estudos nesta lista devido ao processo de classificação, conforme as orientações de uso da base de conhecimento.
Acaricidal properties of vetiver essential oil from Chrysopogon zizanioides (Poaceae) against the tick species Amblyomma cajennense and Rhipicephalus (Boophilus) microplus (Acari: Ixodidae).
Autores: Roseane Nunes de Santana Campos, Cecília Beatriz Nascimento Lima, Alexandre Passos Oliveira, Ana Paula Albano Araújo, Arie Fitzgerald Blank, Péricles Barreto Alves, Rafaely Nascimento Lima, Vinícius Albano Araújo, Alisson Silva Santana, Leandro Bacci | Ano: 2015 | Database: pubmed
Resumo: Ticks are arthropods widely distributed in tropical and subtropical regions, which can transmit infectious agents also responsible for zoonoses. Excessive use of conventional acaricides has resulted in the onset of drug resistance by these parasites, thus the need to use alternative methods for their control. This study evaluated the acaricidal activities of Chrysopogon zizanioides (vetiver) essential oils containing different zizanoic and khuzimol (high and low acidity) acid concentrations on Amblyomma cajennense and Rhipicephalus microplus (Acari: Ixodidae). To this aims, toxicity tests of different concentrations of examined essential oils were conducted on adult females and larval stages. Results showed that the essential oils of C. zizanioides with high and low acidity reduced oviposition of females, eggs hatch and larval survival, being more effective than some commercial products widely used to control these ectoparasites. These results indicate that the C. zizanoides essential oils are promising candidates as acaricidal agents and represent also an add value to vetiver oil with high acidity, which is commercially undervalued in the cosmetic industry.
Resultados: N/A
Conclusão: N/A
Acaricidal properties of vetiver essential oil from Chrysopogon zizanioides (Poaceae) against the tick species Amblyomma cajennense and Rhipicephalus (Boophilus) microplus (Acari: Ixodidae).
Autores: Roseane Nunes de Santana Campos, Cecília Beatriz Nascimento Lima, Alexandre Passos Oliveira, Ana Paula Albano Araújo, Arie Fitzgerald Blank, Péricles Barreto Alves, Rafaely Nascimento Lima, Vinícius Albano Araújo, Alisson Silva Santana, Leandro Bacci | Ano: 2015 | Database: pubmed
Resumo: Ticks are arthropods widely distributed in tropical and subtropical regions, which can transmit infectious agents also responsible for zoonoses. Excessive use of conventional acaricides has resulted in the onset of drug resistance by these parasites, thus the need to use alternative methods for their control. This study evaluated the acaricidal activities of Chrysopogon zizanioides (vetiver) essential oils containing different zizanoic and khuzimol (high and low acidity) acid concentrations on Amblyomma cajennense and Rhipicephalus microplus (Acari: Ixodidae). To this aims, toxicity tests of different concentrations of examined essential oils were conducted on adult females and larval stages. Results showed that the essential oils of C. zizanioides with high and low acidity reduced oviposition of females, eggs hatch and larval survival, being more effective than some commercial products widely used to control these ectoparasites. These results indicate that the C. zizanoides essential oils are promising candidates as acaricidal agents and represent also an add value to vetiver oil with high acidity, which is commercially undervalued in the cosmetic industry.
Resultados: N/A
Conclusão: N/A
Effect of calcium on growth performance and essential oil of vetiver grass (Chrysopogon zizanioides) grown on lead contaminated soils.
Autores: Luu Thai Danh, Paul Truong, Raffaella Mammucari, Neil Foster | Ano: 2011 | Database: pubmed
Resumo: The aim of this study was to investigate effect of calcium on growth, survival, essential oil yield and chemical compositions of vetiver grass grown on lead contaminated soils. Calcium inform of CaCO3 (0, 2000, 4000, 6000 mg Ca kg(-1)) was added to river sand soils containing 4000 mg Pb kg(-1) dry soil. Results showed that, in the absence of calcium treatment, no plants survived after 2 weeks of cultivation, while the rest grew well to the end of the experimental period (42 weeks). Calcium treatments generally resulted in a slight decrease in biomass. Interestingly, an increase in calcium over 2000 mg kg(-1) did not result in a decrease in accumulation of lead in vetiver roots and shoots. The levels of lead in roots and shoots under calcium treatments were around 2000 and 90 mg kg(-1) dry weight, respectively. The addition of CaCO3 did not improve vetiver essential oil yield and chemical composition compared to the control. A level of applied CaCO3 about half of the lead concentration in soils was sufficient to improve vetiver growth and survival, and accumulate high concentrations of lead in the roots. This finding can be applied for re-vegetation of lead contaminated soils using vetiver.
Resultados: N/A
Conclusão: N/A
Different Cytotoxic Effects of Vetiver Oil on Three Types of Cancer Cells, Mainly Targeting CNR2 on TNBC.
Autores: Mila Hanifa, Raditya Wulandari, Ummi Maryam Zulfin, Eri Prasetyo Nugroho, Sari Haryanti, Edy Meiyanto | Ano: 2022 | Database: pubmed
Resumo: To investigate vetiver oil (VO) selectivity effects on several cancer cell types and identify the β-caryophyllene role and mechanisms to prevent cancer development.
Resultados: VO contained various essential oils in which β-caryophyllene was the most abundant. 4T1 cells performed the lowest IC50 value. WiDr and 4T1 cells showed an arrest in the G2/M phase, while T47D showed an increase of sub G1 population after VO treatment. On the other hand, apoptosis was only observed in WiDr and T47D cells. ROS levels were increased significantly in WiDr and T47D cells but not in 4T1 cells. Cannabinoids CB2 receptor (CNR2) was highly expressed in 4T1 cells and commonly exhibited a low survival rate on Triple Negative Breast Cancer (TNBC) patients. CNR2 was the notable target of β-caryophyllene and performed agonistic interaction, which might have contributed to its cytotoxic activity against 4T1 cells.
Conclusão: The molecular interaction of VO cannabinoid agonists and the CNR2 receptor was the underlying cause of VO cytotoxicity, which is a VO distinction on TNBC. Therefore, VO is better suited for use as an anti-cancer agent in TNBC cells.
Different Cytotoxic Effects of Vetiver Oil on Three Types of Cancer Cells, Mainly Targeting CNR2 on TNBC.
Autores: Mila Hanifa, Raditya Wulandari, Ummi Maryam Zulfin, Eri Prasetyo Nugroho, Sari Haryanti, Edy Meiyanto | Ano: 2022 | Database: pubmed
Resumo: To investigate vetiver oil (VO) selectivity effects on several cancer cell types and identify the β-caryophyllene role and mechanisms to prevent cancer development.
Resultados: VO contained various essential oils in which β-caryophyllene was the most abundant. 4T1 cells performed the lowest IC50 value. WiDr and 4T1 cells showed an arrest in the G2/M phase, while T47D showed an increase of sub G1 population after VO treatment. On the other hand, apoptosis was only observed in WiDr and T47D cells. ROS levels were increased significantly in WiDr and T47D cells but not in 4T1 cells. Cannabinoids CB2 receptor (CNR2) was highly expressed in 4T1 cells and commonly exhibited a low survival rate on Triple Negative Breast Cancer (TNBC) patients. CNR2 was the notable target of β-caryophyllene and performed agonistic interaction, which might have contributed to its cytotoxic activity against 4T1 cells.
Conclusão: The molecular interaction of VO cannabinoid agonists and the CNR2 receptor was the underlying cause of VO cytotoxicity, which is a VO distinction on TNBC. Therefore, VO is better suited for use as an anti-cancer agent in TNBC cells.
Anxiety-like behaviour and c-fos expression in rats that inhaled vetiver essential oil.
Autores: Somrudee Saiyudthong, Sirinun Pongmayteegul, Charles A Marsden, Pansiri Phansuwan-Pujito | Ano: 2015 | Database: pubmed
Resumo: Vetiver essential oil (VEO) has been used in aromatherapy for relaxation. This study aimed to investigate the effects of VEO on an anxiety-related behavioural model (the elevated plus-maze, EPM) and immediate-early gene c-fos in amygdala, known to be involved in anxiety. Male Wistar rats were administered diazepam (1 mg/kg i.p.) for 30 min or inhalated with VEO (1%, 2.5% or 5% w/w) for 7 min prior to exposure to the EPM. Then, the effects of 2.5% VEO, the anxiolytic dose, on c-fos expression in amygdala were investigated. The rats given either 2.5% VEO or diazepam exhibited an anxiolytic-like profile in the EPM. VEO and diazepam significantly increased c-fos expression in the lateral division of the central amygdaloid nucleus (CeL). Therefore, the anxiolytic properties of VEO might be associated with altering neuronal activation in CeL. However, future studies are needed to investigate the precise mechanism of action of VEO.
Resultados: N/A
Conclusão: N/A
Qualitative and quantitative analysis of vetiver essential oils by comprehensive two-dimensional gas chromatography and comprehensive two-dimensional gas chromatography/mass spectrometry.
Autores: Jean-Jacques Filippi, Emilie Belhassen, Nicolas Baldovini, Hugues Brevard, Uwe J Meierhenrich | Ano: 2013 | Database: pubmed
Resumo: Vetiver essential oils (VEO) are important raw ingredients used in perfume industry, entering the formula of numerous modern fragrances. Vetiver oils are considered to be among the most complex essential oils, resulting most of the time in highly coeluted chromatograms whatever the analytical technique. In this context, conventional gas chromatography has failed to provide a routine tool for the accurate qualitative and quantitative analysis of their constituents. Applying comprehensive two-dimensional gas chromatography techniques (GCGC-FID/MS) afforded the mean to separate efficiently vetiver oil constituents in order to identify them in a more reliable way. Moreover, this is the first time that a complete true quantitation of each constituent is carried out on such complex oils by means of internal calibration. Finally, we have studied the influence of the injection mode on the determined chemical composition, and showed that several alcohols underwent dehydration under defined chromatographic conditions (splitless mode) usually recommended for quantitation purposes.
Resultados: N/A
Conclusão: N/A
Antimicrobial Formulation of Chrysopogon zizanioides Essential Oil in an Emulsified Lotion for Acne.
Autores: Fadilah Kurrimboccus, Ané Orchard, Michael Paul Danckwerts, Sandy van Vuuren | Ano: 2022 | Database: pubmed
Resumo: Acne is a skin condition arising from excess sebum production and microbial overgrowth within the pilosebaceous unit. Several commercial essential oils have shown promising activity against acne-related pathogens. Due to their volatility and thermal instability, the formulation of essential oils into commercial products remains a pharmaceutical challenge. Thus, this study aimed to develop a viable anti-acne topical treatment as an oil-in-water emulsified lotion to overcome these challenges. Chrysopogon zizanioides (vetiver) displayed noteworthy antimicrobial activity with a mean minimum inhibitory concentration of 0.14 mg/mL against Cutibacterium acnes, Staphylococcus aureus, Staphylococcus epidermidis, and Streptococcus pyogenes. Emulsified lotions containing C. zizanioides were developed through the hydrophilic-lipophilic balance approach. At tested hydrophilic-lipophilic balance values of 8, 9, and 10, C. zizanioides emulsified lotions displayed maximum stability at hydrophilic-lipophilic balance 9 with a minimum change in mean droplet size and polydispersity index of 20.61 and 33.33%, respectively, over 84 days. The C. zizanioides emulsified lotion at optimum hydrophilic-lipophilic balance 9 completely inhibited the growth of C. acnes and killed S. aureus, S. epidermidis, and S. pyogenes within 24 h. Additionally, the lotion retained antimicrobial activity against these test micro-organisms over the 84-day stability test period. Thus, the C. zizanioides emulsified lotion demonstrated physical stability and antimicrobial efficiency, making it an ideal natural product anti-acne treatment.
Resultados: N/A
Conclusão: N/A
Identification of essential oils with activity against stationary phase Staphylococcus aureus.
Autores: Shuzhen Xiao, Peng Cui, Wanliang Shi, Ying Zhang | Ano: 2020 | Database: pubmed
Resumo: Staphylococcus aureus is the most dominant human pathogen, responsible for a variety of chronic and severe infections. There is mounting evidence that persisters are associated with treatment failure and relapse of persistent infections. While some essential oils were reported to have antimicrobial activity against growing S. aureus, activity of essential oils against the stationary phase S. aureus enriched in persisters has not been investigated.
Resultados: We identified 39 essential oils (Oregano, Cinnamon bark, Thyme white, Bandit "Thieves", Lemongrass (Cymbopogon flexuosus), Sandalwood oil, Health shield, Allspice, Amyris, Palmarosa, Cinnamon leaf, Clove bud, Citronella, Geranium bourbon, Marjoram, Peppermint, Lemongrass, Cornmint, Elemi, Ho wood, Head ease, Lemon eucalyptus, Litsea cubeba, Myrrh, Parsley seed, Coriander oil, Dillweed, Hyssop, Neroli, Rosewood oil, Tea tree, Cajeput, Clove bud, Lavender, Sleep tight, Vetiver, Palo santo, Sage oil, Yarrow) at 0.5% (v/v) concentration, 10 essential oils (Cinnamon bark, Oregano, Thyme white, Bandit "Thieves", Lemongrass, Sandalwood oil, Health shield, Allspice, Amyris, Palmarosa at 0.25% (v/v) concentration, and 7 essential oils (Oregano, Cinnamon bark, Thyme white, Lemongrass, Allspice, Amyris, Palmarosa at 0.125% (v/v) concentration to have high activity against stationary phase S. aureus with no visible growth on agar plates after five-day exposure. Among the 10 essential oils which showed high activity at 0.25% (v/v) concentration, 9 (Oregano, Cinnamon bark, Thyme white, Bandit "Thieves", Lemongrass, Health shield, Allspice, Palmarosa, Amyris showed higher activity than the known persister drug tosufloxacin, while Sandalwood oil had activity at a higher concentration. In Oregano essential oil combination studies with antibiotics, Oregano plus tosufloxacin (or levofloxacin, ciprofloxacin) and rifampin completely eradicated stationary phase S. aureus cells, but had no apparent enhancement for linezolid, vancomycin, sulfamethoxazole, trimethoprim, azithromycin or gentamicin.
Conclusão: N/A
Activity of Vetiver Extracts and Essential Oil against Meloidogyne incognita.
Autores: Kansiree Jindapunnapat, Nathan D Reetz, Margaret H MacDonald, Ganga Bhagavathy, Buncha Chinnasri, Noppamas Soonthornchareonnon, Anongnuch Sasnarukkit, Kamlesh R Chauhan, David J Chitwood, Susan L F Meyer | Ano: 2018 | Database: pubmed
Resumo: Vetiver, a nonhost grass for certain nematodes, was studied for the production of compounds active against the southern root-knot nematode, Meloidogyne incognita . In laboratory assays studying the effects on second-stage juvenile (J2) activity and viability, crude vetiver root and shoot extracts were nematotoxic, resulting in 40% to 70% J2 mortality, and were also repellent to J2. Vetiver oil did not exhibit activity against J2 in these assays. Gas chromatography-mass spectrometry analyses of three crude vetiver root ethanol extracts and a commercial vetiver oil determined that two of the major components in each sample were the sesquiterpene acid 3,3,8,8-tetramethyltricyclo[5.1.0.0(2,4)]oct-5-ene-5-propanoic acid and the sesquiterpene alcohol 6-isopropenyl-4,8a-dimethyl-1,2,3,5,6,7,8,8a-octahydronaphthalen-2-ol. The acid was present in higher amounts in the extracts than in the oil. These studies demonstrating nematotoxicity and repellency of vetiver-derived compounds to M. incognita suggest that plant chemistry plays a role in the nonhost status of vetiver to root-knot nematodes, and that the chemical constituents of vetiver may be useful for suppressing nematode populations in the soil.
Resultados: N/A
Conclusão: N/A
The effects of plant essential oils on escape response and mortality rate of Aedes aegypti and Anopheles minimus.
Autores: Sunaiyana Sathantriphop, Nicole L Achee, Unchalee Sanguanpong, Theeraphap Chareonviriyaphap | Ano: 2015 | Database: pubmed
Resumo: The High Throughput Screening System (HITSS) has been applied in insecticide behavioral response studies with various mosquito species. In general, chemical or natural compounds can produce a range of insect responses: contact irritancy, spatial repellency, knock-down, and toxicity. This study characterized these actions in essential oils derived from citronella, hairy basil, catnip, and vetiver in comparison to DEET and picaridin against Aedes aegypti and Anopheles minimus mosquito populations. Results indicated the two mosquito species exhibited significantly different (P<0.05) contact irritant escape responses between treatment and control for all tested compound concentrations, except with the minimum dose of picaridin (P>0.05) against Ae. aegypti. Spatial repellency responses were elicited in both mosquito species when exposed to all compounds, but the strength of the repellent response was dependent on compound and concentration. Data show that higher test concentrations had greatest toxic effects on both mosquito populations, but vetiver had no toxic effect on Ae. aegypti and picaridin did not elicit toxicity in either Ae. aegypti or An. minimus at any test concentration. Ultimately, this study demonstrates the ability of the HITSS assay to guide selection of effective plant essential oils for repelling, irritating, and killing mosquitoes.
Resultados: N/A
Conclusão: N/A
Effect of calcium on growth performance and essential oil of vetiver grass (Chrysopogon zizanioides) grown on lead contaminated soils.
Autores: Luu Thai Danh, Paul Truong, Raffaella Mammucari, Neil Foster | Ano: 2011 | Database: pubmed
Resumo: The aim of this study was to investigate effect of calcium on growth, survival, essential oil yield and chemical compositions of vetiver grass grown on lead contaminated soils. Calcium inform of CaCO3 (0, 2000, 4000, 6000 mg Ca kg(-1)) was added to river sand soils containing 4000 mg Pb kg(-1) dry soil. Results showed that, in the absence of calcium treatment, no plants survived after 2 weeks of cultivation, while the rest grew well to the end of the experimental period (42 weeks). Calcium treatments generally resulted in a slight decrease in biomass. Interestingly, an increase in calcium over 2000 mg kg(-1) did not result in a decrease in accumulation of lead in vetiver roots and shoots. The levels of lead in roots and shoots under calcium treatments were around 2000 and 90 mg kg(-1) dry weight, respectively. The addition of CaCO3 did not improve vetiver essential oil yield and chemical composition compared to the control. A level of applied CaCO3 about half of the lead concentration in soils was sufficient to improve vetiver growth and survival, and accumulate high concentrations of lead in the roots. This finding can be applied for re-vegetation of lead contaminated soils using vetiver.
Resultados: N/A
Conclusão: N/A
Qualitative and quantitative analysis of vetiver essential oils by comprehensive two-dimensional gas chromatography and comprehensive two-dimensional gas chromatography/mass spectrometry.
Autores: Jean-Jacques Filippi, Emilie Belhassen, Nicolas Baldovini, Hugues Brevard, Uwe J Meierhenrich | Ano: 2013 | Database: pubmed
Resumo: Vetiver essential oils (VEO) are important raw ingredients used in perfume industry, entering the formula of numerous modern fragrances. Vetiver oils are considered to be among the most complex essential oils, resulting most of the time in highly coeluted chromatograms whatever the analytical technique. In this context, conventional gas chromatography has failed to provide a routine tool for the accurate qualitative and quantitative analysis of their constituents. Applying comprehensive two-dimensional gas chromatography techniques (GCGC-FID/MS) afforded the mean to separate efficiently vetiver oil constituents in order to identify them in a more reliable way. Moreover, this is the first time that a complete true quantitation of each constituent is carried out on such complex oils by means of internal calibration. Finally, we have studied the influence of the injection mode on the determined chemical composition, and showed that several alcohols underwent dehydration under defined chromatographic conditions (splitless mode) usually recommended for quantitation purposes.
Resultados: N/A
Conclusão: N/A
Constituents of south Indian vetiver oils.
Autores: Gopal Rao Mallavarapu, Kodakandla V Syamasundar, S Ramesh, Bhaskaruni R Rajeswara Rao | Ano: 2012 | Database: pubmed
Resumo: The essential oils isolated from vetiver [Vetiveria zizanioides (L.) Nash.] roots collected from four locations in south India were analyzed by GC-FID and GC-MS. Eighty constituents, representing 94.5-97.8% of the oils, have been identified. The oils from Bangalore, Hyderabad, Kundapur, and Mettupalayam were rich in sesquiterpenes and oxygenated sesquiterpenes with cedrane, bisabolane, eudesmane, eremophilane, and zizaane skeletons. The main components of the four essential oils were: eudesma-4,6-diene (delta-selinene) + beta-vetispirene (3.9-6.1%), beta-vetivenene (0.9-9.4%), 13-nor-trans-eudesma-4(15),7-dien-11-one + amorph-4-en-10-ol (5.0-6.4%), trans-eudesma-4(15),7-dien-12-ol (vetiselinenol) + (E)-opposita-4(15),7(11)-dien-12-ol (3.7-5.9%), eremophila-1 (10),11-dien-2alpha-ol (nootkatol) + ziza-6(13)-en-12-ol (khusimol) (16.1-19.2%), and eremophila-1(10),7(11)-dien-2alpha-ol (isonootkatol) + (E)-eremophila-1(10),7(11)-12-ol (isovalencenol) (5.6-6.9%). The important compounds that impart the characteristic vetiver odor are: khusimene, delta-selinene, beta-vetivenene, cyclocopacamphan-12-ol (epimers A and B), vetiselinenol, khusimol, isovalencenol, khusimone, alpha-vetivone, and beta-vetivone. The chemical profiles of the oils are comparable to Haitian vetiver oil.
Resultados: N/A
Conclusão: N/A
Conservação in vitro de acessos de vetiver/ In vitro conservation of vetiver accessions
Autores: Santos, Thatiana Carvalho; Arrigoni-Blank, Maria de Fátima; Blank, Arie Fitzgerald; Menezes, Marina Mesquita Lopes de Azevedo | Ano: 2012 | Database: LILACS
Resumo: O vetiver [Chrysopogon zizanioides (L.) Roberty] é um capim perene pertencente à família Poaceae, cujo óleo essencial extraído das raízes é utilizado amplamente na produção de perfumes. A manutenção de coleções in vitro tem sido considerada como um método alternativo à conservação de germoplasma especialmente para espécies propagadas vegetativamente. O objetivo desse trabalho foi avaliar diferentes meios de cultura e duas condições de temperatura (18° e 25° C) em acessos de vetiver para a obtenção de um protocolo da conservação in vitro sob crescimento lento. Os ensaios foram conduzidos em delineamento inteiramente casualizado, e foram testados o inibidor de crescimento ABA e diferentes concentrações de sais MS, em três acessos de vetiver (UFS-VET001, UFS-VET002 e UFS-VET003). Os três acessos de vetiver podem ser conservados sob o regime de crescimento lento por um período de 270 dias reduzindo-se a concentração dos sais MS a 25% de sua concentração normal, na temperatura de 18°C.
Resultados: N/A
Conclusão: N/A
Enhanced Excito-Repellency of Binary Mixtures of Plant-Based Mosquito Repellents Against Culex quinquefasciatus Say (Diptera: Culicidae), a Night Biting Mosquito Species.
Autores: Wasana Boonyuan, Alex Ahebwa, Jirod Nararak, Sunaiyana Sathantriphop, Theeraphap Chareonviriyaphap | Ano: 2022 | Database: pubmed
Resumo: Efficacies of essential oils (EOs) of Vetiveria zizanioides (L.) Nash. (Poales: Poaceae) (VZ EO), Cananga odorata (Lam) Hook. F. & Thomson (Magnoliales: Annonaceae) (CO EO), and crude extract (CE) of Andrographis paniculata (Burm.F.) Wall ex. Nees (Lamiales: Acanthaceae) (AP CE), against laboratory (lab) and field strains of Culex quinquefasciatus Say were investigated. Irritant and repellent activities of individual and binary mixtures of plant extracts were compared with N,N-diethyl-m-toluamide (DEET) using an excito-repellency system. The irritant activity (direct tarsal contact), the mean percent escape response of VZ EO (91.67%, 83.33%), and CO EO (80%, 88.33%) were not significantly different compared with DEET (88.33%, 95%) against lab and field strains, respectively. Similarly, irritant responses in combinations (1:1 and 1:2, v:v) of either VZ EO or CO EO with AP CE were not significantly different from DEET against both strains (P > 0.001). The repellent activity (no tarsal contact), the mean percent escape response of VZ EO (68.33%), CO EO (61.67%), and VZ EO+AP CE (1:1, v:v) (81.67%) against lab strain and CO EO (85%) against field strain were not significantly different from that of DEET (P > 0.001). Interestingly, the greatest contact irritancy of VZ EO+AP CE (1:1, v:v) (96.67%) (P = 0.0026) and a stronger repellency response of CO EO (85%) (P = 0.0055) produced significantly different patterns of escape response compared with DEET against both lab and field strains, respectively. The EOs of VZ EO and CO EO or their mixture with AP CE showed potential as plant-based active ingredients for mosquito repellents. In addition, the major chemical constituents of VZ EO were β-vetivone (6.4%), khusimol (2.96%), and α-vetivone (2.94%) by gas chromatograpy-mass spectrometry.
Resultados: N/A
Conclusão: N/A
Valorization of Brazilian vetiver (Vetiveria zizanioides (L.) Nash ex Small) oil.
Autores: Julian Martinez, Paulo T V Rosa, Chantal Menut, Alain Leydet, Pierre Brat, Dominique Pallet, M Angela A Meireles | Ano: 2004 | Database: pubmed
Resumo: The valorization of extracts from Brazilian vetiver (Vetiveria zizanioides (L.) Nash ex Small) roots was studied. This study took into account the extraction method, the chemical composition of the extracts, their sensorial characteristics, and the possibility of chemical transformations of the product. The performed extraction methods were hydrodistillation and extraction with supercritical carbon dioxide. Some pretreatment methods were tested on the vetiver roots and evaluated in terms of extraction yield, process time, chemical composition, and sensorial properties. Supercritical carbon dioxide extraction resulted in high yield (3.2%) in significantly less time than the other methods. The chemical compositions of the extracts obtained by the different methods were also compared to those of commercial vetiver oils from other sources, showing that Brazilian samples had a greater acid amount. An extraction in basic medium from Brazilian vetiver oil was done to remove its main acid (zizanoic acid), which was chemically transformed into an alcohol (khusimol) of desirable sensorial properties. Sensory evaluation indicated that the Brazilian volatile oil without acid could be used in perfumery and the extract obtained with supercritical carbon dioxide could have application in food.
Resultados: N/A
Conclusão: N/A
Economic incentive for applying vetiver grass to remediate lead, copper and zinc contaminated soils.
Autores: Luu Thai Danh, Paul Truong, Raffaella Mammucari, Neil Fostert | Ano: 2011 | Database: pubmed
Resumo: The application of vetiver grass (Chrysopogon zizaniodes) for phytoremediation of heavy metal contaminated soils can be promoted by economic return through essential oil production. Four levels of lead (0, 500, 2000, and 8000 mg kg(-1) dry soil), copper (0, 100, 400, and 1600 mg kg(-1) dry soil) and zinc (0, 400, 1600, and 6400 mg kg(-1) dry soil) were used to study their effects on vetiver growth, essential oil composition and yield. This study also investigated the effect of nitrogen concentrations on vetiver oil yield. Vetiver accumulated high concentrations of Pb, Cu and Zn in roots (3246, 754 and 2666 mg kg(-1), respectively) and small amounts of contaminants in shoots (327, 55, and 642 mg kg(-1), respectively). Oil content and yield were not affected at low and moderate concentrations of Cu and Zn. Only the application of Pb had a significant detrimental effect on oil composition. Extraction of vetiver essential oils by hydrodistillation produced heavy metal free products. High level of nitrogen reduced oil yields. Results show that phytoremediation of Cu and Zn contaminated soils by vetiver can generate revenue from the commercialization of oil extracts.
Resultados: N/A
Conclusão: N/A
Effect of Vetiveria zizanioides essential oil on melanogenesis in melanoma cells: downregulation of tyrosinase expression and suppression of oxidative stress.
Autores: Hsin-Yi Peng, Chin-Chun Lai, Chih-Chien Lin, Su-Tze Chou | Ano: 2014 | Database: pubmed
Resumo: The major objective of this study was to estimate the hypopigmentation function of the essential oil from Vetiveria zizanioides (VZ-EO). Our results indicated that VZ-EO exhibits potent lipid peroxidation inhibitory activity to moderate the bleaching of β-carotene and to maintain the cellular glutathione (GSH) levels. VZ-EO can markedly decrease melanin production and tyrosinase activity in α-melanin-stimulating-hormone- (α-MSH-) stimulated B16 cells. The effect of VZ-EO on melanogenesis is achieved by the suppression of cellular tyrosinase expression. The results demonstrated that the activity of VZ-EO on melanogenesis might be the result of its potent antioxidative ability, which was reflected in the decreased cellular oxidant and malondialdehyde (MDA) levels and the recovered activities of superoxide dismutase (SOD), glutathione peroxidase (GPX), and catalase (CAT) in α-MSH-stimulated B16 cells. The most abundant compound in VZ-EO is cedr-8-en-13-ol (12.4%), which has a strong capability to inhibit lipid peroxidation. Therefore, VZ-EO has the potential to become an ingredient in future hypopigmentation drugs, foods, and cosmetics.
Resultados: N/A
Conclusão: N/A
Efficacy and repellency of some essential oils and their blends against larval and adult house flies, Musca domestica L. (Diptera: Muscidae).
Autores: Hanem F Khater, Christopher J Geden | Ano: 2019 | Database: pubmed
Resumo: House flies are global pests and notoriously difficult to control. Essential oils of vetiver, cinnamon, and lavender and their blends were tested for toxic and repellent effects against larval and adult flies. All of the oils had moderate toxicity for eggs. Mortality of 2nd instar larvae was 57-78% in dipping assays, 38-100% in contact assays, and 94-100% in treated media. Lavender was less effective (38% mortality) than the others (91-100%) in contact bioassays. Oil blends were not more effective against larvae than individual oils. Vetiver and cinnamon oils were strongly repellent (84 and 78%, respectively) for larvae in treated media. None of the oils were repellent for adult house flies in olfactometer assays, but testing of additional products demonstrated significant repellency for neem oil, p-menthane-3,8-diol (PMD), and vanillin. Contact/fumigant toxicity of vetiver, cinnamon, and lavender oils was 100%, significantly higher than mortality from sunflower oil (67%). Blends of oils were not more effective against adults than the individual oils, but blends diluted with sunflower oil were as effective as the individual oils. Essentials oils of vetiver and cinnamon may have potential for fly management in situations where conventional insecticides cannot be used.
Resultados: N/A
Conclusão: N/A
Potential of essential oils to prevent fly strike and their effects on the longevity of adult Lucilia sericata.
Autores: Hanem F Khater, Christopher J Geden | Ano: 2018 | Database: pubmed
Resumo: Lucilia sericata is a facultative ectoparasite causing fly strike or myiasis in warm-blooded vertebrates. It is controlled by traps or insecticides, but both have drawbacks and alternative ways of control are urgently needed. Essential oils (EOs) of vetiver (Chrysopogon zizanioides), cinnamon (Cinnamomum zeylanicum), and lavender (Lavandula angustifolia) and their blends (OBs); OB1 (2 ml of each EO plus 4 ml of sunflower oil as a carrier) and OB2 (2 ml of each EO) were tested. Oils were tested at 5% for deterrence assays, and a dose response assay 0.01-0.6%, was conducted to determine forced-contact toxicity. We evaluated the efficacy of oils as oviposition deterrents, repellents/attractants, and their effects on mortality and longevity of adult L. sericata. Our data indicated that 0.2% EOs killed all flies by 5 min post-treatment and that vetiver oil greatly deterred flies from the oviposition medium and reduced adult longevity. Sunflower oil repelled all flies from ovipositing and greatly reduced the lifespan of treated adults. The blend of the four oils (OB1) had the greatest repellent effect on the flies. EOs have insecticidal, repellent, and oviposition-deterrent activities against L. sericata that could be used for suppression of blow fly populations.
Resultados: N/A
Conclusão: N/A
Release properties of chemical and enzymatic crosslinked gelatin-gum Arabic microparticles containing a fluorescent probe plus vetiver essential oil.
Autores: Ana S Prata, Maria H A Zanin, Maria I Ré, Carlos R F Grosso | Ano: 2008 | Database: pubmed
Resumo: Oil-containing gelatin-gum Arabic microparticles were prepared by complex coacervation followed by crosslinking with glutaraldehyde or transglutaminase. A fluorescent mixture, khusimyl dansylate (KD) as the fluorescent compound mixed to the vetiver essential oil, was used as oil model. The effect of the type of crosslinking of the coacervated gelatin-gum Arabic membrane, the physical state of microparticles, wet or freeze-dried and the type of release media, aqueous with surfactants, Sodium Dodecyl Sulphate (sds) or Tween 80 (tw) and anhydrous ethanol as organic media on the release rate of the KD from the microparticles, was experimentally investigated. It was shown that the oil was dispersed uniformly throughout the microparticles and the chemical crosslinked microparticles were more resistant to swelling, presenting smaller sizes after hydration. Also the crosslinking effect, transglutaminase or glutaraldehyde, could be confirmed by the integrity of the crosslinked gelatin-gum Arabic microparticles after incubation in the aqueous sds media, compared to complete dissolution of the uncrosslinked microparticles in this media. The cumulative fluorescent KD release from the gelatin-gum Arabic microparticles decreased in the following order of dissolution media: anhydrous ethanol>tw>sds and the wet microparticles have shown a faster KD release than freeze-dried ones. A mathematical model was used to estimate the diffusion coefficient (D). The chemically crosslinked gelatin-gum Arabic microparticles ensured a pronounced retard effect in the KD diffusion, presenting a D varying from 0.02 to 0.6 x 10(-11)cm(2)/s, mainly in an aqueous media, against D varying from 1.05 to 13.9 x 10(-11)cm(2)/s from the enzymatic crosslinked microparticles.
Resultados: N/A
Conclusão: N/A
Release properties of chemical and enzymatic crosslinked gelatin-gum Arabic microparticles containing a fluorescent probe plus vetiver essential oil.
Autores: Ana S Prata, Maria H A Zanin, Maria I Ré, Carlos R F Grosso | Ano: 2008 | Database: pubmed
Resumo: Oil-containing gelatin-gum Arabic microparticles were prepared by complex coacervation followed by crosslinking with glutaraldehyde or transglutaminase. A fluorescent mixture, khusimyl dansylate (KD) as the fluorescent compound mixed to the vetiver essential oil, was used as oil model. The effect of the type of crosslinking of the coacervated gelatin-gum Arabic membrane, the physical state of microparticles, wet or freeze-dried and the type of release media, aqueous with surfactants, Sodium Dodecyl Sulphate (sds) or Tween 80 (tw) and anhydrous ethanol as organic media on the release rate of the KD from the microparticles, was experimentally investigated. It was shown that the oil was dispersed uniformly throughout the microparticles and the chemical crosslinked microparticles were more resistant to swelling, presenting smaller sizes after hydration. Also the crosslinking effect, transglutaminase or glutaraldehyde, could be confirmed by the integrity of the crosslinked gelatin-gum Arabic microparticles after incubation in the aqueous sds media, compared to complete dissolution of the uncrosslinked microparticles in this media. The cumulative fluorescent KD release from the gelatin-gum Arabic microparticles decreased in the following order of dissolution media: anhydrous ethanol>tw>sds and the wet microparticles have shown a faster KD release than freeze-dried ones. A mathematical model was used to estimate the diffusion coefficient (D). The chemically crosslinked gelatin-gum Arabic microparticles ensured a pronounced retard effect in the KD diffusion, presenting a D varying from 0.02 to 0.6 x 10(-11)cm(2)/s, mainly in an aqueous media, against D varying from 1.05 to 13.9 x 10(-11)cm(2)/s from the enzymatic crosslinked microparticles.
Resultados: N/A
Conclusão: N/A
Release properties of chemical and enzymatic crosslinked gelatin-gum Arabic microparticles containing a fluorescent probe plus vetiver essential oil.
Autores: Ana S Prata, Maria H A Zanin, Maria I Ré, Carlos R F Grosso | Ano: 2008 | Database: pubmed
Resumo: Oil-containing gelatin-gum Arabic microparticles were prepared by complex coacervation followed by crosslinking with glutaraldehyde or transglutaminase. A fluorescent mixture, khusimyl dansylate (KD) as the fluorescent compound mixed to the vetiver essential oil, was used as oil model. The effect of the type of crosslinking of the coacervated gelatin-gum Arabic membrane, the physical state of microparticles, wet or freeze-dried and the type of release media, aqueous with surfactants, Sodium Dodecyl Sulphate (sds) or Tween 80 (tw) and anhydrous ethanol as organic media on the release rate of the KD from the microparticles, was experimentally investigated. It was shown that the oil was dispersed uniformly throughout the microparticles and the chemical crosslinked microparticles were more resistant to swelling, presenting smaller sizes after hydration. Also the crosslinking effect, transglutaminase or glutaraldehyde, could be confirmed by the integrity of the crosslinked gelatin-gum Arabic microparticles after incubation in the aqueous sds media, compared to complete dissolution of the uncrosslinked microparticles in this media. The cumulative fluorescent KD release from the gelatin-gum Arabic microparticles decreased in the following order of dissolution media: anhydrous ethanol>tw>sds and the wet microparticles have shown a faster KD release than freeze-dried ones. A mathematical model was used to estimate the diffusion coefficient (D). The chemically crosslinked gelatin-gum Arabic microparticles ensured a pronounced retard effect in the KD diffusion, presenting a D varying from 0.02 to 0.6 x 10(-11)cm(2)/s, mainly in an aqueous media, against D varying from 1.05 to 13.9 x 10(-11)cm(2)/s from the enzymatic crosslinked microparticles.
Resultados: N/A
Conclusão: N/A
Modification of sleep-waking and electroencephalogram induced by vetiver essential oil inhalation.
Autores: Dania Cheaha, Acharaporn Issuriya, Rodiya Manor, Jackapun Kwangjai, Thitima Rujiralai, Ekkasit Kumarnsit | Ano: 2016 | Database: pubmed
Resumo: Essential oils (EOs) have been claimed to modulate mental functions though the most of data were obtained from subjective methods of assessment. Direct effects of EO on brain function remained largely to be confirmed with scientific proof. This study aimed to demonstrate quantifiable and reproducible effects of commercial vetiver (Vetiveria zizanioides) EO inhalation on sleep-waking and electroencephalogram (EEG) patterns in adult male Wistar rats. The experiments were conducted during November 2013 - February 2014.
Resultados: One-way ANOVA analysis confirmed that vetiver EO inhalation significantly increased total waking and reduced slow-wave sleep time. Moreover, EO inhalation decreased alpha and beta1 activity in both frontal and parietal cortices and increased gamma activity in the frontal cortex. Changes in these frequencies began almost from the start of the inhalation.
Conclusão: These data suggest refreshing properties of vetiver EO on electrical brain activity and alertness.
Constituents of south Indian vetiver oils.
Autores: Gopal Rao Mallavarapu, Kodakandla V Syamasundar, S Ramesh, Bhaskaruni R Rajeswara Rao | Ano: 2012 | Database: pubmed
Resumo: The essential oils isolated from vetiver [Vetiveria zizanioides (L.) Nash.] roots collected from four locations in south India were analyzed by GC-FID and GC-MS. Eighty constituents, representing 94.5-97.8% of the oils, have been identified. The oils from Bangalore, Hyderabad, Kundapur, and Mettupalayam were rich in sesquiterpenes and oxygenated sesquiterpenes with cedrane, bisabolane, eudesmane, eremophilane, and zizaane skeletons. The main components of the four essential oils were: eudesma-4,6-diene (delta-selinene) + beta-vetispirene (3.9-6.1%), beta-vetivenene (0.9-9.4%), 13-nor-trans-eudesma-4(15),7-dien-11-one + amorph-4-en-10-ol (5.0-6.4%), trans-eudesma-4(15),7-dien-12-ol (vetiselinenol) + (E)-opposita-4(15),7(11)-dien-12-ol (3.7-5.9%), eremophila-1 (10),11-dien-2alpha-ol (nootkatol) + ziza-6(13)-en-12-ol (khusimol) (16.1-19.2%), and eremophila-1(10),7(11)-dien-2alpha-ol (isonootkatol) + (E)-eremophila-1(10),7(11)-12-ol (isovalencenol) (5.6-6.9%). The important compounds that impart the characteristic vetiver odor are: khusimene, delta-selinene, beta-vetivenene, cyclocopacamphan-12-ol (epimers A and B), vetiselinenol, khusimol, isovalencenol, khusimone, alpha-vetivone, and beta-vetivone. The chemical profiles of the oils are comparable to Haitian vetiver oil.
Resultados: N/A
Conclusão: N/A
Toxicity and growth inhibition potential of vetiver, cinnamon, and lavender essential oils and their blends against larvae of the sheep blowfly, Lucilia sericata.
Autores: Hanem F Khater, Ali M Ali, Galal A Abouelella, Marawan A Marawan, Marimuthu Govindarajan, Kadarkarai Murugan, Rao Z Abbas, Nelissa P Vaz, Giovanni Benelli | Ano: 2018 | Database: pubmed
Resumo: Myiasis induced by the sheep blowfly, Lucilia sericata, represents a public health problem widely distributed throughout the world. L. sericata larval stages feed on both humans and animals. L. sericata adults and larvae can play a role in spreading agents of mycobacterial infections.
Resultados: All applied oils did not repel L2 from the treated liver but adversely affected their development. Contact treatments on L. sericata L3 indicated that vetiver and cinnamon oils significantly affected treated larvae. Total mortality rates were 93.33 and 95.56%, respectively. Furthermore, oil blends tested through contact assays killed larvae when used at higher concentrations; adult emergence was eliminated post-treatment with doses >30% for oil blend 1 and >10% for oil blend 2.
Conclusão: Overall, cinnamon and vetiver oils (5%) were selected as reliable and cheap biopesticides for controlling larvae of L. sericata. The tested oils are inexpensive and represent new promising botanical insecticides in the fight against blowflies causing myiasis.
Antioxidant potential of the root of Vetiveria zizanioides (L.) Nash.
Autores: Suaib Luqman, Ritesh Kumar, Shubhangi Kaushik, Suchita Srivastava, Mahendra P Darokar, Suman P S Khanuja | Ano: 2009 | Database: pubmed
Resumo: Vetiveria zizanioides, an aromatic plant commonly known as vetiver has been used for various ailments. The essential oil of vetiver root has been shown to possess antioxidant activity. However, antioxidant potential of spent root extract has not been reported. Hence, in the present study, ferric reducing, free radical scavenging and antioxidant activity of two genotypes namely KS1 and gulabi of V. zizanioides L. Nash root were investigated using in vitro assays - the ferric reducing antioxidant power (FRAP), 1,1-diphenyl-2-picrylhydrazyl (DPPH), total phenolic content (TPC), total antioxidant capacity (TAC) and reducing power (RP). KS1 genotype showed higher FRAP values, DPPH inhibition, TPC and RP potential compared to gulabi and the antioxidant activity increased with the concentration of the extract (10-1000 microg/mL). A significant protective effect of cv KS1 (100 microg/mL) extract was also observed in reduced glutathione (GSH) and malondialdehyde (MDA) concentrations of erythrocytes subjected to oxidative stress by tert-butyl hydroperoxide (t-BHP) and hydrogen peroxide (H202). The cv KS1 showed better antioxidant activity, compared to cv gulabi indicating the possibility of exploring the presence of different phytoconstituents in the two varieties.
Resultados: N/A
Conclusão: N/A
Toxicity and growth inhibition potential of vetiver, cinnamon, and lavender essential oils and their blends against larvae of the sheep blowfly, Lucilia sericata.
Autores: Hanem F Khater, Ali M Ali, Galal A Abouelella, Marawan A Marawan, Marimuthu Govindarajan, Kadarkarai Murugan, Rao Z Abbas, Nelissa P Vaz, Giovanni Benelli | Ano: 2018 | Database: pubmed
Resumo: Myiasis induced by the sheep blowfly, Lucilia sericata, represents a public health problem widely distributed throughout the world. L. sericata larval stages feed on both humans and animals. L. sericata adults and larvae can play a role in spreading agents of mycobacterial infections.
Resultados: All applied oils did not repel L2 from the treated liver but adversely affected their development. Contact treatments on L. sericata L3 indicated that vetiver and cinnamon oils significantly affected treated larvae. Total mortality rates were 93.33 and 95.56%, respectively. Furthermore, oil blends tested through contact assays killed larvae when used at higher concentrations; adult emergence was eliminated post-treatment with doses >30% for oil blend 1 and >10% for oil blend 2.
Conclusão: Overall, cinnamon and vetiver oils (5%) were selected as reliable and cheap biopesticides for controlling larvae of L. sericata. The tested oils are inexpensive and represent new promising botanical insecticides in the fight against blowflies causing myiasis.
Anxiety-like behaviour and c-fos expression in rats that inhaled vetiver essential oil.
Autores: Somrudee Saiyudthong, Sirinun Pongmayteegul, Charles A Marsden, Pansiri Phansuwan-Pujito | Ano: 2015 | Database: pubmed
Resumo: Vetiver essential oil (VEO) has been used in aromatherapy for relaxation. This study aimed to investigate the effects of VEO on an anxiety-related behavioural model (the elevated plus-maze, EPM) and immediate-early gene c-fos in amygdala, known to be involved in anxiety. Male Wistar rats were administered diazepam (1 mg/kg i.p.) for 30 min or inhalated with VEO (1%, 2.5% or 5% w/w) for 7 min prior to exposure to the EPM. Then, the effects of 2.5% VEO, the anxiolytic dose, on c-fos expression in amygdala were investigated. The rats given either 2.5% VEO or diazepam exhibited an anxiolytic-like profile in the EPM. VEO and diazepam significantly increased c-fos expression in the lateral division of the central amygdaloid nucleus (CeL). Therefore, the anxiolytic properties of VEO might be associated with altering neuronal activation in CeL. However, future studies are needed to investigate the precise mechanism of action of VEO.
Resultados: N/A
Conclusão: N/A
In vitro characterization and mosquito (Aedes aegypti) repellent activity of essential-oils-loaded nanoemulsions.
Autores: Onanong Nuchuchua, Usawadee Sakulku, Napaporn Uawongyart, Satit Puttipipatkhachorn, Apinan Soottitantawat, Uracha Ruktanonchai | Ano: 2009 | Database: pubmed
Resumo: The nanoemulsions composed of citronella oil, hairy basil oil, and vetiver oil with mean droplet sizes ranging from 150 to 220 nm were prepared and investigated both in vitro and in vivo. Larger emulsion droplets (195-220 nm) shifted toward a smaller size (150-160 nm) after high-pressure homogenization and resulted in higher release rate. We proposed that thin films obtained from the nanoemulsions with smaller droplet size would have higher integrity, thus increasing the vaporization of essential oils and subsequently prolonging the mosquito repellant activity. The release rates were fitted with Avrami's equations and n values were in the same range of 0.6 to 1.0, implying that the release of encapsulated limonene was controlled by the diffusion mechanism from the emulsion droplet. By using high-pressure homogenization together with optimum concentrations of 5% (w/w) hairy basil oil, 5% (w/w) vetiver oil (5%), and 10% (w/w) citronella oil could improve physical stability and prolong mosquito protection time to 4.7 h due to the combination of these three essential oils as well as small droplet size of nanoemulsion.
Resultados: N/A
Conclusão: N/A
In vitro characterization and mosquito (Aedes aegypti) repellent activity of essential-oils-loaded nanoemulsions.
Autores: Onanong Nuchuchua, Usawadee Sakulku, Napaporn Uawongyart, Satit Puttipipatkhachorn, Apinan Soottitantawat, Uracha Ruktanonchai | Ano: 2009 | Database: pubmed
Resumo: The nanoemulsions composed of citronella oil, hairy basil oil, and vetiver oil with mean droplet sizes ranging from 150 to 220 nm were prepared and investigated both in vitro and in vivo. Larger emulsion droplets (195-220 nm) shifted toward a smaller size (150-160 nm) after high-pressure homogenization and resulted in higher release rate. We proposed that thin films obtained from the nanoemulsions with smaller droplet size would have higher integrity, thus increasing the vaporization of essential oils and subsequently prolonging the mosquito repellant activity. The release rates were fitted with Avrami's equations and n values were in the same range of 0.6 to 1.0, implying that the release of encapsulated limonene was controlled by the diffusion mechanism from the emulsion droplet. By using high-pressure homogenization together with optimum concentrations of 5% (w/w) hairy basil oil, 5% (w/w) vetiver oil (5%), and 10% (w/w) citronella oil could improve physical stability and prolong mosquito protection time to 4.7 h due to the combination of these three essential oils as well as small droplet size of nanoemulsion.
Resultados: N/A
Conclusão: N/A
Enhanced Excito-Repellency of Binary Mixtures of Plant-Based Mosquito Repellents Against Culex quinquefasciatus Say (Diptera: Culicidae), a Night Biting Mosquito Species.
Autores: Wasana Boonyuan, Alex Ahebwa, Jirod Nararak, Sunaiyana Sathantriphop, Theeraphap Chareonviriyaphap | Ano: 2022 | Database: pubmed
Resumo: Efficacies of essential oils (EOs) of Vetiveria zizanioides (L.) Nash. (Poales: Poaceae) (VZ EO), Cananga odorata (Lam) Hook. F. & Thomson (Magnoliales: Annonaceae) (CO EO), and crude extract (CE) of Andrographis paniculata (Burm.F.) Wall ex. Nees (Lamiales: Acanthaceae) (AP CE), against laboratory (lab) and field strains of Culex quinquefasciatus Say were investigated. Irritant and repellent activities of individual and binary mixtures of plant extracts were compared with N,N-diethyl-m-toluamide (DEET) using an excito-repellency system. The irritant activity (direct tarsal contact), the mean percent escape response of VZ EO (91.67%, 83.33%), and CO EO (80%, 88.33%) were not significantly different compared with DEET (88.33%, 95%) against lab and field strains, respectively. Similarly, irritant responses in combinations (1:1 and 1:2, v:v) of either VZ EO or CO EO with AP CE were not significantly different from DEET against both strains (P > 0.001). The repellent activity (no tarsal contact), the mean percent escape response of VZ EO (68.33%), CO EO (61.67%), and VZ EO+AP CE (1:1, v:v) (81.67%) against lab strain and CO EO (85%) against field strain were not significantly different from that of DEET (P > 0.001). Interestingly, the greatest contact irritancy of VZ EO+AP CE (1:1, v:v) (96.67%) (P = 0.0026) and a stronger repellency response of CO EO (85%) (P = 0.0055) produced significantly different patterns of escape response compared with DEET against both lab and field strains, respectively. The EOs of VZ EO and CO EO or their mixture with AP CE showed potential as plant-based active ingredients for mosquito repellents. In addition, the major chemical constituents of VZ EO were β-vetivone (6.4%), khusimol (2.96%), and α-vetivone (2.94%) by gas chromatograpy-mass spectrometry.
Resultados: N/A
Conclusão: N/A
The effects of plant essential oils on escape response and mortality rate of Aedes aegypti and Anopheles minimus.
Autores: Sunaiyana Sathantriphop, Nicole L Achee, Unchalee Sanguanpong, Theeraphap Chareonviriyaphap | Ano: 2015 | Database: pubmed
Resumo: The High Throughput Screening System (HITSS) has been applied in insecticide behavioral response studies with various mosquito species. In general, chemical or natural compounds can produce a range of insect responses: contact irritancy, spatial repellency, knock-down, and toxicity. This study characterized these actions in essential oils derived from citronella, hairy basil, catnip, and vetiver in comparison to DEET and picaridin against Aedes aegypti and Anopheles minimus mosquito populations. Results indicated the two mosquito species exhibited significantly different (P<0.05) contact irritant escape responses between treatment and control for all tested compound concentrations, except with the minimum dose of picaridin (P>0.05) against Ae. aegypti. Spatial repellency responses were elicited in both mosquito species when exposed to all compounds, but the strength of the repellent response was dependent on compound and concentration. Data show that higher test concentrations had greatest toxic effects on both mosquito populations, but vetiver had no toxic effect on Ae. aegypti and picaridin did not elicit toxicity in either Ae. aegypti or An. minimus at any test concentration. Ultimately, this study demonstrates the ability of the HITSS assay to guide selection of effective plant essential oils for repelling, irritating, and killing mosquitoes.
Resultados: N/A
Conclusão: N/A
Avoidance Behavior to Essential Oils by Anopheles minimus, a Malaria Vector in Thailand.
Autores: Jirod Nararak, Sunaiyana Sathantriphop, Kamal Chauhan, Siripun Tantakom, Amanda L Eiden, Theeraphap Chareonviriyaphap | Ano: 2016 | Database: pubmed
Resumo: Essential oils extracted from 4 different plant species--citronella (Cymbopogon nardus), hairy basil (Ocimum americanum), sweet basil (Ocimum basilicum), and vetiver (Vetiveria zizanioides)-were investigated for their irritant and repellent activities against Anopheles minimus, using an excito-repellency test system. Pure essential oils were used in absolute ethanol at the concentrations of 0.5%, 1%, 2.5%, and 5% (v/v) compared with deet. At the lowest concentration of 0.5%, hairy basil displayed the best irritant and repellent effects against An. minimus. Citronella and vetiver at 1-5% showed strong irritant effects with>80% escape, while repellent effects of both oils were observed at 1% and 2.5% citronella (73-89% escape) and at 5% vetiver (83.9% escape). Sweet basil had only moderate irritant action at 5% concentration (69.6% escape) and slightly repellent on test mosquitoes (<50% escape). The results found that hairy basil, citronella, and vetiver are promising potential mosquito repellent products for protection against An. minimus.
Resultados: N/A
Conclusão: N/A
Tabela de propriedades
| Óleo Essencial | Propriedade | Confirmado | Título | Autores | Ano | Database | Link |
|---|---|---|---|---|---|---|---|
| Vetiver | Acaricida | Sim | Acaricidal properties of vetiver essential oil from Chrysopogon zizanioides (Poaceae) against the tick species Amblyomma cajennense and Rhipicephalus (Boophilus) microplus (Acari: Ixodidae). | Roseane Nunes de Santana Campos, Cecília Beatriz Nascimento Lima, Alexandre Passos Oliveira, Ana Paula Albano Araújo, Arie Fitzgerald Blank, Péricles Barreto Alves, Rafaely Nascimento Lima, Vinícius Albano Araújo, Alisson Silva Santana, Leandro Bacci | 2015 | pubmed | N/A |
| Vetiver | Acaricida contra Amblyomma cajennense e Rhipicephalus (Boophilus) microplus | Sim | Acaricidal properties of vetiver essential oil from Chrysopogon zizanioides (Poaceae) against the tick species Amblyomma cajennense and Rhipicephalus (Boophilus) microplus (Acari: Ixodidae). | Roseane Nunes de Santana Campos, Cecília Beatriz Nascimento Lima, Alexandre Passos Oliveira, Ana Paula Albano Araújo, Arie Fitzgerald Blank, Péricles Barreto Alves, Rafaely Nascimento Lima, Vinícius Albano Araújo, Alisson Silva Santana, Leandro Bacci | 2015 | pubmed | N/A |
| Vetiver | Acúmulo de chumbo nas raízes e caules | Sim | Effect of calcium on growth performance and essential oil of vetiver grass (Chrysopogon zizanioides) grown on lead contaminated soils. | Luu Thai Danh, Paul Truong, Raffaella Mammucari, Neil Foster | 2011 | pubmed | N/A |
| Vetiver | Agente anticancerígeno contra células TNBC | Sim | Different Cytotoxic Effects of Vetiver Oil on Three Types of Cancer Cells, Mainly Targeting CNR2 on TNBC. | Mila Hanifa, Raditya Wulandari, Ummi Maryam Zulfin, Eri Prasetyo Nugroho, Sari Haryanti, Edy Meiyanto | 2022 | pubmed | N/A |
| Vetiver | Agente antitumoral em células TNBC | Sim | Different Cytotoxic Effects of Vetiver Oil on Three Types of Cancer Cells, Mainly Targeting CNR2 on TNBC. | Mila Hanifa, Raditya Wulandari, Ummi Maryam Zulfin, Eri Prasetyo Nugroho, Sari Haryanti, Edy Meiyanto | 2022 | pubmed | N/A |
| Vetiver | Ansiolítico | Sim | Anxiety-like behaviour and c-fos expression in rats that inhaled vetiver essential oil. | Somrudee Saiyudthong, Sirinun Pongmayteegul, Charles A Marsden, Pansiri Phansuwan-Pujito | 2015 | pubmed | N/A |
| Vetiver | Análise qualitativa e quantitativa dos constituintes do óleo essencial utilizando a técnica de cromatografia a gás bidimensional (GCGC-FID/MS) | Sim | Qualitative and quantitative analysis of vetiver essential oils by comprehensive two-dimensional gas chromatography and comprehensive two-dimensional gas chromatography/mass spectrometry. | Jean-Jacques Filippi, Emilie Belhassen, Nicolas Baldovini, Hugues Brevard, Uwe J Meierhenrich | 2013 | pubmed | N/A |
| Vetiver | Atividade antimicrobiana contra Cutibacterium acnes, Staphylococcus aureus, Staphylococcus epidermidis e Streptococcus pyogenes. | Sim | Antimicrobial Formulation of Chrysopogon zizanioides Essential Oil in an Emulsified Lotion for Acne. | Fadilah Kurrimboccus, Ané Orchard, Michael Paul Danckwerts, Sandy van Vuuren | 2022 | pubmed | N/A |
| Vetiver | Atividade contra a fase estacionária de Staphylococcus aureus. | Sim | Identification of essential oils with activity against stationary phase Staphylococcus aureus. | Shuzhen Xiao, Peng Cui, Wanliang Shi, Ying Zhang | 2020 | pubmed | N/A |
| Vetiver | Atividade nematotóxica e repelente contra Meloidogyne incognita | Sim | Activity of Vetiver Extracts and Essential Oil against Meloidogyne incognita. | Kansiree Jindapunnapat, Nathan D Reetz, Margaret H MacDonald, Ganga Bhagavathy, Buncha Chinnasri, Noppamas Soonthornchareonnon, Anongnuch Sasnarukkit, Kamlesh R Chauhan, David J Chitwood, Susan L F Meyer | 2018 | pubmed | N/A |
| Vetiver | Ação repelente contra Aedes aegypti e Anopheles minimus | Sim | The effects of plant essential oils on escape response and mortality rate of Aedes aegypti and Anopheles minimus. | Sunaiyana Sathantriphop, Nicole L Achee, Unchalee Sanguanpong, Theeraphap Chareonviriyaphap | 2015 | pubmed | N/A |
| Vetiver | Capacidade de acumular chumbo nas raízes | Sim | Effect of calcium on growth performance and essential oil of vetiver grass (Chrysopogon zizanioides) grown on lead contaminated soils. | Luu Thai Danh, Paul Truong, Raffaella Mammucari, Neil Foster | 2011 | pubmed | N/A |
| Vetiver | Composição química qualitativa e quantitativa | Sim | Qualitative and quantitative analysis of vetiver essential oils by comprehensive two-dimensional gas chromatography and comprehensive two-dimensional gas chromatography/mass spectrometry. | Jean-Jacques Filippi, Emilie Belhassen, Nicolas Baldovini, Hugues Brevard, Uwe J Meierhenrich | 2013 | pubmed | N/A |
| Vetiver | Compostos químicos presentes no óleo essencial | Sim | Constituents of south Indian vetiver oils. | Gopal Rao Mallavarapu, Kodakandla V Syamasundar, S Ramesh, Bhaskaruni R Rajeswara Rao | 2012 | pubmed | N/A |
| Vetiver | Conservação in vitro | Sim | Conservação in vitro de acessos de vetiver/ In vitro conservation of vetiver accessions | Santos, Thatiana Carvalho; Arrigoni-Blank, Maria de Fátima; Blank, Arie Fitzgerald; Menezes, Marina Mesquita Lopes de Azevedo | 2012 | LILACS | http://www.seer.ufu.br/index.php/biosciencejournal/article/view/14006/11107 |
| Vetiver | Eficácia como repelente de mosquitos Culex quinquefasciatus Say | Sim | Enhanced Excito-Repellency of Binary Mixtures of Plant-Based Mosquito Repellents Against Culex quinquefasciatus Say (Diptera: Culicidae), a Night Biting Mosquito Species. | Wasana Boonyuan, Alex Ahebwa, Jirod Nararak, Sunaiyana Sathantriphop, Theeraphap Chareonviriyaphap | 2022 | pubmed | N/A |
| Vetiver | Extração de óleo essencial usando dióxido de carbono supercrítico | Sim | Valorization of Brazilian vetiver (Vetiveria zizanioides (L.) Nash ex Small) oil. | Julian Martinez, Paulo T V Rosa, Chantal Menut, Alain Leydet, Pierre Brat, Dominique Pallet, M Angela A Meireles | 2004 | pubmed | N/A |
| Vetiver | Fitorremediação de solos contaminados por metais pesados | Sim | Economic incentive for applying vetiver grass to remediate lead, copper and zinc contaminated soils. | Luu Thai Danh, Paul Truong, Raffaella Mammucari, Neil Fostert | 2011 | pubmed | N/A |
| Vetiver | Hipopigmentação | Sim | Effect of Vetiveria zizanioides essential oil on melanogenesis in melanoma cells: downregulation of tyrosinase expression and suppression of oxidative stress. | Hsin-Yi Peng, Chin-Chun Lai, Chih-Chien Lin, Su-Tze Chou | 2014 | pubmed | N/A |
| Vetiver | Inseticida e repelente contra larvas de moscas domésticas | Sim | Efficacy and repellency of some essential oils and their blends against larval and adult house flies, Musca domestica L. (Diptera: Muscidae). | Hanem F Khater, Christopher J Geden | 2019 | pubmed | N/A |
| Vetiver | Inseticida, repelente e inibidor de oviposição contra Lucilia sericata | Sim | Potential of essential oils to prevent fly strike and their effects on the longevity of adult Lucilia sericata. | Hanem F Khater, Christopher J Geden | 2018 | pubmed | N/A |
| Vetiver | Liberado lentamente em micropartículas de gelatina-goma arábica | Sim | Release properties of chemical and enzymatic crosslinked gelatin-gum Arabic microparticles containing a fluorescent probe plus vetiver essential oil. | Ana S Prata, Maria H A Zanin, Maria I Ré, Carlos R F Grosso | 2008 | pubmed | N/A |
| Vetiver | Liberação controlada de Khusimyl Dansilate | Sim | Release properties of chemical and enzymatic crosslinked gelatin-gum Arabic microparticles containing a fluorescent probe plus vetiver essential oil. | Ana S Prata, Maria H A Zanin, Maria I Ré, Carlos R F Grosso | 2008 | pubmed | N/A |
| Vetiver | Liberação controlada de Khusimyl Dansylate (KD) | Sim | Release properties of chemical and enzymatic crosslinked gelatin-gum Arabic microparticles containing a fluorescent probe plus vetiver essential oil. | Ana S Prata, Maria H A Zanin, Maria I Ré, Carlos R F Grosso | 2008 | pubmed | N/A |
| Vetiver | Modificação do padrão de sono e vigília e atividade elétrica cerebral induzida pela inalação do óleo essencial de Vetiver. | Sim | Modification of sleep-waking and electroencephalogram induced by vetiver essential oil inhalation. | Dania Cheaha, Acharaporn Issuriya, Rodiya Manor, Jackapun Kwangjai, Thitima Rujiralai, Ekkasit Kumarnsit | 2016 | pubmed | N/A |
| Vetiver | Perfil químico de óleos essenciais de raízes de Vetiver coletados de quatro localizações no sul da Índia | Sim | Constituents of south Indian vetiver oils. | Gopal Rao Mallavarapu, Kodakandla V Syamasundar, S Ramesh, Bhaskaruni R Rajeswara Rao | 2012 | pubmed | N/A |
| Vetiver | Pesticida contra larvas da mosca Lucilia sericata | Sim | Toxicity and growth inhibition potential of vetiver, cinnamon, and lavender essential oils and their blends against larvae of the sheep blowfly, Lucilia sericata. | Hanem F Khater, Ali M Ali, Galal A Abouelella, Marawan A Marawan, Marimuthu Govindarajan, Kadarkarai Murugan, Rao Z Abbas, Nelissa P Vaz, Giovanni Benelli | 2018 | pubmed | N/A |
| Vetiver | Potencial antioxidante | Sim | Antioxidant potential of the root of Vetiveria zizanioides (L.) Nash. | Suaib Luqman, Ritesh Kumar, Shubhangi Kaushik, Suchita Srivastava, Mahendra P Darokar, Suman P S Khanuja | 2009 | pubmed | N/A |
| Vetiver | Potencial inseticida contra larvas da mosca doméstica Lucilia sericata | Sim | Toxicity and growth inhibition potential of vetiver, cinnamon, and lavender essential oils and their blends against larvae of the sheep blowfly, Lucilia sericata. | Hanem F Khater, Ali M Ali, Galal A Abouelella, Marawan A Marawan, Marimuthu Govindarajan, Kadarkarai Murugan, Rao Z Abbas, Nelissa P Vaz, Giovanni Benelli | 2018 | pubmed | N/A |
| Vetiver | Propriedades ansiolíticas | Sim | Anxiety-like behaviour and c-fos expression in rats that inhaled vetiver essential oil. | Somrudee Saiyudthong, Sirinun Pongmayteegul, Charles A Marsden, Pansiri Phansuwan-Pujito | 2015 | pubmed | N/A |
| Vetiver | Repelente contra mosquito Aedes aegypti | Sim | In vitro characterization and mosquito (Aedes aegypti) repellent activity of essential-oils-loaded nanoemulsions. | Onanong Nuchuchua, Usawadee Sakulku, Napaporn Uawongyart, Satit Puttipipatkhachorn, Apinan Soottitantawat, Uracha Ruktanonchai | 2009 | pubmed | N/A |
| Vetiver | Repelente de mosquito (Aedes aegypti) | Sim | In vitro characterization and mosquito (Aedes aegypti) repellent activity of essential-oils-loaded nanoemulsions. | Onanong Nuchuchua, Usawadee Sakulku, Napaporn Uawongyart, Satit Puttipipatkhachorn, Apinan Soottitantawat, Uracha Ruktanonchai | 2009 | pubmed | N/A |
| Vetiver | Repelente de mosquitos Culex quinquefasciatus | Sim | Enhanced Excito-Repellency of Binary Mixtures of Plant-Based Mosquito Repellents Against Culex quinquefasciatus Say (Diptera: Culicidae), a Night Biting Mosquito Species. | Wasana Boonyuan, Alex Ahebwa, Jirod Nararak, Sunaiyana Sathantriphop, Theeraphap Chareonviriyaphap | 2022 | pubmed | N/A |
| Vetiver | Repelente e irritante contra Aedes aegypti e Anopheles minimus | Sim | The effects of plant essential oils on escape response and mortality rate of Aedes aegypti and Anopheles minimus. | Sunaiyana Sathantriphop, Nicole L Achee, Unchalee Sanguanpong, Theeraphap Chareonviriyaphap | 2015 | pubmed | N/A |
| Vetiver | Repelente e irritante contra Anopheles minimus, vetor da malária na Tailândia | Sim | Avoidance Behavior to Essential Oils by Anopheles minimus, a Malaria Vector in Thailand. | Jirod Nararak, Sunaiyana Sathantriphop, Kamal Chauhan, Siripun Tantakom, Amanda L Eiden, Theeraphap Chareonviriyaphap | 2016 | pubmed | N/A |