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Ajouter le résultat dans votre panierChemical composition of the leaf, stem and root oils of pleiospermium alatum / Mathur G. Sethuraman in The journal of essential oil research, Vol. 23 N° 6 (Novembre/Décembre 2011)
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 1-4
Titre : Chemical composition of the leaf, stem and root oils of pleiospermium alatum Type de document : texte imprimé Auteurs : Mathur G. Sethuraman, Auteur ; V. K. Ramesh, Auteur ; R. Gopan, Auteur Année de publication : 2012 Article en page(s) : pp. 1-4 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Pleiospermium alatum Rutaceae Essential oil composition α-cadinol Elemol α-bisabolol α-santalene Pregei-jerene Index. décimale : 646 Résumé : The essential oils obtained by hydrodistillation of leaves, stem and roots of Pleiospermium alatum were analyzed by Gas Chromatography and Gas Chromatography—Mass Spectrometry. Thirty-one components comprising 97.3% of the leaf oil, twenty-nine components comprising 96.1% of the stem oil and twenty-three components comprising 95.0% of the root oil were identified. The major components in the leaf oil were elemol (12.5%) followed by pregei- jerene (10.5%), α-cadinol (8.5%) and geijerene (8.5%). The stem oil contained elemol (12.4%), α-cadinol (11.1%) and epi-a-muurolol (9.4%) as the major components, while the root oil had α-cadinol (27.9%), α-bisabolol (11.5%), α-santalene (11.0%) and elemol (9.8 %) as the major components. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712273 [article] Chemical composition of the leaf, stem and root oils of pleiospermium alatum [texte imprimé] / Mathur G. Sethuraman, Auteur ; V. K. Ramesh, Auteur ; R. Gopan, Auteur . - 2012 . - pp. 1-4.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 1-4
Mots-clés : Pleiospermium alatum Rutaceae Essential oil composition α-cadinol Elemol α-bisabolol α-santalene Pregei-jerene Index. décimale : 646 Résumé : The essential oils obtained by hydrodistillation of leaves, stem and roots of Pleiospermium alatum were analyzed by Gas Chromatography and Gas Chromatography—Mass Spectrometry. Thirty-one components comprising 97.3% of the leaf oil, twenty-nine components comprising 96.1% of the stem oil and twenty-three components comprising 95.0% of the root oil were identified. The major components in the leaf oil were elemol (12.5%) followed by pregei- jerene (10.5%), α-cadinol (8.5%) and geijerene (8.5%). The stem oil contained elemol (12.4%), α-cadinol (11.1%) and epi-a-muurolol (9.4%) as the major components, while the root oil had α-cadinol (27.9%), α-bisabolol (11.5%), α-santalene (11.0%) and elemol (9.8 %) as the major components. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712273
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 5-10
Titre : Inhibition of spore development and mycelial growth of rhizopus stolonifer by essential oil of satureja richingeri from Iran Type de document : texte imprimé Auteurs : Malihe Safari, Auteur ; Arghavan Kamaly, Auteur ; Javad Hadian, Auteur Année de publication : 2012 Article en page(s) : pp. 5-10 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Satureja richingeri Lamiaceae Essential oil composition Carvacrol Rhizopus stolonifer Inhibitory effect Index. décimale : 646 Résumé : There is a great interest in the use of natural antifungal compounds for the control of fungi such as Rhizopus stolonifer in the postharvest agricultural system and food industry. In this study, the inhibitory effect of essential oil extracted from Satureja richingeri and its major compound, Carvacrol, on spore development and mycelial growth of R. stolonifer was investigated. Mycelium exhibited higher sensitivity to the oil and Carvacrol than that observed for spores. Spore treatment with oil and Carvacrol for 2 and 3 h led to a complete inhibition of spore germination, after 4 h of incubation. However, continuing the incubation to 6 h resulted in germination of 4.67% of the spores treated with the oil but no germination was detected for those treated with Carvacrol. It could be concluded that treatment with S. richingeri essential oil for 3 h would extend the shelf life of agricultural product considerably via inhibition of spore germination. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712274 [article] Inhibition of spore development and mycelial growth of rhizopus stolonifer by essential oil of satureja richingeri from Iran [texte imprimé] / Malihe Safari, Auteur ; Arghavan Kamaly, Auteur ; Javad Hadian, Auteur . - 2012 . - pp. 5-10.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 5-10
Mots-clés : Satureja richingeri Lamiaceae Essential oil composition Carvacrol Rhizopus stolonifer Inhibitory effect Index. décimale : 646 Résumé : There is a great interest in the use of natural antifungal compounds for the control of fungi such as Rhizopus stolonifer in the postharvest agricultural system and food industry. In this study, the inhibitory effect of essential oil extracted from Satureja richingeri and its major compound, Carvacrol, on spore development and mycelial growth of R. stolonifer was investigated. Mycelium exhibited higher sensitivity to the oil and Carvacrol than that observed for spores. Spore treatment with oil and Carvacrol for 2 and 3 h led to a complete inhibition of spore germination, after 4 h of incubation. However, continuing the incubation to 6 h resulted in germination of 4.67% of the spores treated with the oil but no germination was detected for those treated with Carvacrol. It could be concluded that treatment with S. richingeri essential oil for 3 h would extend the shelf life of agricultural product considerably via inhibition of spore germination. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712274
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 11-18
Titre : Chemical composition of turmeric oil (Curcuma longa L. cv. Roma) and its antimicrobial activity against eye infecting pathogens Type de document : texte imprimé Auteurs : Shikha Singh, Auteur ; Bhawani Sankar, Auteur ; Sathpathy Rajesh, Auteur Année de publication : 2012 Article en page(s) : pp. 11-18 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Curcuma longa L. Essential oil GC/MS analysis Ar-tumerone Microbicidal Eye ailments Index. décimale : 646 Résumé : The essential oil from the rhizomes of Roma cultivar of turmeric (Curcuma longa) from Orissa was examined for its antimicrobial activity against the pathogens causing eye infections. The oil was obtained by hydrodistillation extraction method using Clevenger apparatus. Chemical analysis of the oil was done by using gas chromatography and mass spectrometry (GC/MS). The antimicrobial effects of oil towards Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans and Aspergillus niger were tested by inhibition zone diameter (IZD) test to screen the antimicrobial activity, minimum inhibitory concentration (MIC) test and minimum killing time (MKT) test to determine the minimum concentration of oil and minimum time required to kill the pathogens. Oil showed very good activity against all four microbial strains used at concentration of 10 μL except Pseudomonas aerugenosa. Very low concentration of 1.95 μL/mL oil was needed to inhibit the growth of most highly infecting pathogen Staphylococcus aureus within 15 min of its exposure in comparison to other microbial strains. High turmerone content (49.76%) of elite turmeric cultivar Roma released from Orissa (India) might be assigned to be responsible for such excellent anti microbial activity against the tested pathogens. The purpose of this study is to authenticate the use of turmeric rhizome oil against eye infections so as to giving an approach to formulate turmeric rhizome oil as potential eye drop in place of traditional antibiotics after undertaking its in vivo pharmacological studies. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712275 [article] Chemical composition of turmeric oil (Curcuma longa L. cv. Roma) and its antimicrobial activity against eye infecting pathogens [texte imprimé] / Shikha Singh, Auteur ; Bhawani Sankar, Auteur ; Sathpathy Rajesh, Auteur . - 2012 . - pp. 11-18.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 11-18
Mots-clés : Curcuma longa L. Essential oil GC/MS analysis Ar-tumerone Microbicidal Eye ailments Index. décimale : 646 Résumé : The essential oil from the rhizomes of Roma cultivar of turmeric (Curcuma longa) from Orissa was examined for its antimicrobial activity against the pathogens causing eye infections. The oil was obtained by hydrodistillation extraction method using Clevenger apparatus. Chemical analysis of the oil was done by using gas chromatography and mass spectrometry (GC/MS). The antimicrobial effects of oil towards Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans and Aspergillus niger were tested by inhibition zone diameter (IZD) test to screen the antimicrobial activity, minimum inhibitory concentration (MIC) test and minimum killing time (MKT) test to determine the minimum concentration of oil and minimum time required to kill the pathogens. Oil showed very good activity against all four microbial strains used at concentration of 10 μL except Pseudomonas aerugenosa. Very low concentration of 1.95 μL/mL oil was needed to inhibit the growth of most highly infecting pathogen Staphylococcus aureus within 15 min of its exposure in comparison to other microbial strains. High turmerone content (49.76%) of elite turmeric cultivar Roma released from Orissa (India) might be assigned to be responsible for such excellent anti microbial activity against the tested pathogens. The purpose of this study is to authenticate the use of turmeric rhizome oil against eye infections so as to giving an approach to formulate turmeric rhizome oil as potential eye drop in place of traditional antibiotics after undertaking its in vivo pharmacological studies. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712275
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 19-24
Titre : Preparative separation of patchouli alcohol from patchouli oil using high performance centrifugal partition chromatography Type de document : texte imprimé Auteurs : Xiao-Cen Li, Auteur ; Qing-Wen Zhang, Auteur ; Zhi-Qi Yin, Auteur Année de publication : 2012 Article en page(s) : pp. 19-24 Note générale : Génie chimique Langues : Anglais (eng) Mots-clés : Pogostemon cablin Patchouli Patchouli alcohol High-performance centrifugal partition chromatography Preparative separation Index. décimale : 646 Résumé : A high-performance centrifugal partition chromatography (HPCPC) method was developed for the preparative separation of patchouli alcohol. The separation was performed with a nonaqueous two-phase solvent system consisting of petroleum ether (bp.30–60°C)-acetonitrile (1:1, v/v) in descending separation mode. A total of more than 2 g of patchouli alcohol was isolated from the essential oil (12.5 g) in 300 min. This component was separated and identified by comparing its retention time and MS data with the standard substance analyzed by GC/MS. The purity was more than 98%. About 450 mL petroleum ether and 550 mL acetonitrile were used for a single run, and 60% and 80% of petroleum ether and acetonitrile could be recovered for next run, respectively. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712276 [article] Preparative separation of patchouli alcohol from patchouli oil using high performance centrifugal partition chromatography [texte imprimé] / Xiao-Cen Li, Auteur ; Qing-Wen Zhang, Auteur ; Zhi-Qi Yin, Auteur . - 2012 . - pp. 19-24.
Génie chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 19-24
Mots-clés : Pogostemon cablin Patchouli Patchouli alcohol High-performance centrifugal partition chromatography Preparative separation Index. décimale : 646 Résumé : A high-performance centrifugal partition chromatography (HPCPC) method was developed for the preparative separation of patchouli alcohol. The separation was performed with a nonaqueous two-phase solvent system consisting of petroleum ether (bp.30–60°C)-acetonitrile (1:1, v/v) in descending separation mode. A total of more than 2 g of patchouli alcohol was isolated from the essential oil (12.5 g) in 300 min. This component was separated and identified by comparing its retention time and MS data with the standard substance analyzed by GC/MS. The purity was more than 98%. About 450 mL petroleum ether and 550 mL acetonitrile were used for a single run, and 60% and 80% of petroleum ether and acetonitrile could be recovered for next run, respectively. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712276
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 25-28
Titre : Chemical composition of the essential oil of rhododendron lepidotum wall. ex D. don growing in kashmir himalayas Type de document : texte imprimé Auteurs : Manzoor A. Rather, Auteur ; Shakeel U. Rehman, Auteur ; Abdul S. Shawl, Auteur Année de publication : 2012 Article en page(s) : pp. 25-28 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Rhododendron lepidotum L Ericaceae GC-FID GC/MS Monoterpene hydrocarbons α-pinene β-pinene α-humulene Index. décimale : 646 Résumé : The essential oil obtained by the hydrodistillation of the leaves of Rhododendron lepidotum L growing wild in the high Himalayas of Jammu and Kashmir was analyzed by a combination of capillary GC-FID and GC/MS analytical techniques. The study led to the identification and quantification of 34 chemical constituents belonging to different classes of compounds and accounting for 94.2% of the total oil composition. The oil composition is dominated by the presence of monoterpene hydrocarbons (78.9%). The principal components were α-pinene and β-pinene (54.4% and 12.5% respectively) along with limonene (6.5%), γ-terpinene (2.2%), bornyl acetate (2.8%) and α-humulene (4.2%). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712277 [article] Chemical composition of the essential oil of rhododendron lepidotum wall. ex D. don growing in kashmir himalayas [texte imprimé] / Manzoor A. Rather, Auteur ; Shakeel U. Rehman, Auteur ; Abdul S. Shawl, Auteur . - 2012 . - pp. 25-28.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 25-28
Mots-clés : Rhododendron lepidotum L Ericaceae GC-FID GC/MS Monoterpene hydrocarbons α-pinene β-pinene α-humulene Index. décimale : 646 Résumé : The essential oil obtained by the hydrodistillation of the leaves of Rhododendron lepidotum L growing wild in the high Himalayas of Jammu and Kashmir was analyzed by a combination of capillary GC-FID and GC/MS analytical techniques. The study led to the identification and quantification of 34 chemical constituents belonging to different classes of compounds and accounting for 94.2% of the total oil composition. The oil composition is dominated by the presence of monoterpene hydrocarbons (78.9%). The principal components were α-pinene and β-pinene (54.4% and 12.5% respectively) along with limonene (6.5%), γ-terpinene (2.2%), bornyl acetate (2.8%) and α-humulene (4.2%). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712277
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 29-33
Titre : Chemical composition of essential oil and hydrolat of geum iranicum khatamaz Type de document : texte imprimé Auteurs : S. Shahani, Auteur ; H. R. Monsef-Esfahani, Auteur ; R. Hajiaghaee, Auteur Année de publication : 2012 Article en page(s) : pp. 29-33 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Geum iranicum Rosaceae Essential oil composition Hydrolat Eugenol Palmitic acid GC GC/MS Index. décimale : 646 Résumé : The essential oils and hydrolats of the aerial part and root of Geum iranicum Khatamasaz grown at Shirvan, in the northeast of Iran, were obtained by hydrodistillation and analyzed by GC and GC/MS. The essential oil and hydrolat of the root were characterized by a high amount of eugenol (83.9%, 65.4%) and myrtenol (2.3%, 9.9%) respectively, whereas the essential oil of the aerial part of the plant had palmitic acid (10.6%) and linoleic acid (9.6%) as characteristic constituents. Eugenol (45.7%) and linalool (7.3%) were identified as major components in the hydrolat of the aerial part of G. iranicum. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712278 [article] Chemical composition of essential oil and hydrolat of geum iranicum khatamaz [texte imprimé] / S. Shahani, Auteur ; H. R. Monsef-Esfahani, Auteur ; R. Hajiaghaee, Auteur . - 2012 . - pp. 29-33.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 29-33
Mots-clés : Geum iranicum Rosaceae Essential oil composition Hydrolat Eugenol Palmitic acid GC GC/MS Index. décimale : 646 Résumé : The essential oils and hydrolats of the aerial part and root of Geum iranicum Khatamasaz grown at Shirvan, in the northeast of Iran, were obtained by hydrodistillation and analyzed by GC and GC/MS. The essential oil and hydrolat of the root were characterized by a high amount of eugenol (83.9%, 65.4%) and myrtenol (2.3%, 9.9%) respectively, whereas the essential oil of the aerial part of the plant had palmitic acid (10.6%) and linoleic acid (9.6%) as characteristic constituents. Eugenol (45.7%) and linalool (7.3%) were identified as major components in the hydrolat of the aerial part of G. iranicum. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712278
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 34-42
Titre : Identification of aroma-active compounds in malaysian pomelo (citrus grandis (L.) osbeck) peel by gas chromatography-olfactometry Type de document : texte imprimé Auteurs : M-W Cheong, Auteur ; S-Q. Liu, Auteur ; J. Yeo, Auteur Année de publication : 2012 Article en page(s) : pp. 34-42 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Pomelo GC-olfactometry AEDA RFA Aldehydic Grapefruit-like Index. décimale : 646 Résumé : Malaysian pink and white pomelo (Citrusgrandis (L.) Osbeck) peels were extracted with dichloromethane (DCM). Using GC-FID/MS and gas chromatography-olfactometry (GC-O), 50 and 47 aroma-active compounds were identified in pink and white pomelo peel extracts, respectively. The potency of each odorant in both pomelo peel extracts was determined by aroma extraction dilution analysis (AEDA). On the basis of flavor dilution (FD) factor, odor activity value (OAV) and relative flavor activity (RFA), main odorants in pink pomelo peel extract were trans-linalool oxide, cis,trans-2,6-nonadienal, octanal, citronellal, nonanal, trans-nerolidol, neryl acetate, indole, 6-methyl-5-hepten-2-one, terpinolene, trans-2-heptenal, perilla alcohol and nootkatone, while the most intense aromas in white pomelo peel extract were terpinolene, α-copaene, 4-terpinenol, trans-nerolidol, trans-linalool oxide, nootkatone, cis,trans-2,6- nonadienal, citronellol, elemol, carvyl acetate, 6-methyl-5-hepten-2-one, perilla aldehyde and indole. Thus, no single compound exhibited the characteristic aroma of both Malaysian pomelo peel extracts. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712279 [article] Identification of aroma-active compounds in malaysian pomelo (citrus grandis (L.) osbeck) peel by gas chromatography-olfactometry [texte imprimé] / M-W Cheong, Auteur ; S-Q. Liu, Auteur ; J. Yeo, Auteur . - 2012 . - pp. 34-42.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 34-42
Mots-clés : Pomelo GC-olfactometry AEDA RFA Aldehydic Grapefruit-like Index. décimale : 646 Résumé : Malaysian pink and white pomelo (Citrusgrandis (L.) Osbeck) peels were extracted with dichloromethane (DCM). Using GC-FID/MS and gas chromatography-olfactometry (GC-O), 50 and 47 aroma-active compounds were identified in pink and white pomelo peel extracts, respectively. The potency of each odorant in both pomelo peel extracts was determined by aroma extraction dilution analysis (AEDA). On the basis of flavor dilution (FD) factor, odor activity value (OAV) and relative flavor activity (RFA), main odorants in pink pomelo peel extract were trans-linalool oxide, cis,trans-2,6-nonadienal, octanal, citronellal, nonanal, trans-nerolidol, neryl acetate, indole, 6-methyl-5-hepten-2-one, terpinolene, trans-2-heptenal, perilla alcohol and nootkatone, while the most intense aromas in white pomelo peel extract were terpinolene, α-copaene, 4-terpinenol, trans-nerolidol, trans-linalool oxide, nootkatone, cis,trans-2,6- nonadienal, citronellol, elemol, carvyl acetate, 6-methyl-5-hepten-2-one, perilla aldehyde and indole. Thus, no single compound exhibited the characteristic aroma of both Malaysian pomelo peel extracts. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712279
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 43-47
Titre : Activity of tea tree (melaleuca alternifolia, cheel) and thyme (thymus vulgaris, linnaeus.) essential oils against some pathogenic seed borne fungi Type de document : texte imprimé Auteurs : Luca Riccioni, Auteur ; Laura Orzali, Auteur Année de publication : 2012 Article en page(s) : pp. 43-47 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Ascochyta rabiei Colletotrichum lindemuthianum Fusarium spp Drechslera avenae Alternaria spp Mycelial growth Minimum inhibitory concentration Index. décimale : 646 Résumé : Melaleuca alternifolia (tea tree) and Thymus vulgaris (thyme) essential oils were tested for their antifungal activity to investigate the possibility of their use for seed treatment. The ability of the two oils to inhibit mycelial growth was studied by in vitro assay on agar medium containing different concentrations of the essential oils (0%, 0.05%, 0.1%, 0.25%, 0.5%, 1% v/v). Seven seed-borne pathogen fungi of large interest Ascochyta rabiei, Colletotrichum lindemuthianum, Fusarium graminearum, F. culmorum, Drechslera avenae, Alternaria radicina and A. dauci were transferred on the modified medium in order to test the oils antifungal activity, by calculating the Percentage of Mycelial Growth Inhibition (%MGI) and the Minimum Inhibitory Concentration (MIC). Results showed that both the oils had a clear reducing effect on fungal growth, that was dose-dependent and it differed depending on the fungal species, confirming what is already reported in literature, with T. vulgaris oil to be one of the most potent agent against fungi. M. alternifolia and T. vulgaris oils can be considered potential alternative natural fungicides to the synthetic chemicals that are currently used to prevent and control seed-borne diseases, and could be used in agriculture for safe and eco-friendly seed-treatments. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712280 [article] Activity of tea tree (melaleuca alternifolia, cheel) and thyme (thymus vulgaris, linnaeus.) essential oils against some pathogenic seed borne fungi [texte imprimé] / Luca Riccioni, Auteur ; Laura Orzali, Auteur . - 2012 . - pp. 43-47.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 43-47
Mots-clés : Ascochyta rabiei Colletotrichum lindemuthianum Fusarium spp Drechslera avenae Alternaria spp Mycelial growth Minimum inhibitory concentration Index. décimale : 646 Résumé : Melaleuca alternifolia (tea tree) and Thymus vulgaris (thyme) essential oils were tested for their antifungal activity to investigate the possibility of their use for seed treatment. The ability of the two oils to inhibit mycelial growth was studied by in vitro assay on agar medium containing different concentrations of the essential oils (0%, 0.05%, 0.1%, 0.25%, 0.5%, 1% v/v). Seven seed-borne pathogen fungi of large interest Ascochyta rabiei, Colletotrichum lindemuthianum, Fusarium graminearum, F. culmorum, Drechslera avenae, Alternaria radicina and A. dauci were transferred on the modified medium in order to test the oils antifungal activity, by calculating the Percentage of Mycelial Growth Inhibition (%MGI) and the Minimum Inhibitory Concentration (MIC). Results showed that both the oils had a clear reducing effect on fungal growth, that was dose-dependent and it differed depending on the fungal species, confirming what is already reported in literature, with T. vulgaris oil to be one of the most potent agent against fungi. M. alternifolia and T. vulgaris oils can be considered potential alternative natural fungicides to the synthetic chemicals that are currently used to prevent and control seed-borne diseases, and could be used in agriculture for safe and eco-friendly seed-treatments. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712280
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 48-51
Titre : Variation in the constituents of tanacetum dolichophyllum (kitam.) kitam. from different locations of uttarakhand himalaya (India) Type de document : texte imprimé Auteurs : S. Zafar Haider, Auteur ; Hema Lohani, Auteur ; Sunil Sah, Auteur Année de publication : 2012 Article en page(s) : pp. 48-51 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Tanacetum dolichophyllum Essential oil composition β-eudesmol Cis-lanceol α-bisabolol Index. décimale : 646 Résumé : Essential oils isolated from the aerial parts of two different populations of Tanacetum dolichophyllum (Kitam.) Kitam. (syn. Tanacetum longifolium Wall.) were analyzed by GC and GC/MS in order to determine the variation of concentration in their constituents. Plant collected from Dayara meadow (Sample I) afforded cis-lanceol (11.8%), β-pinene (10.7%), (E)- β-farnesene (7.4%), α-bisabolol (7.2%), β-eudesmol (5.2%) and terpinen-4-ol (5.1%) as the major constituents, whereas in the sample collected from Tungnath (Sample II) β-eudesmol (31.4%), α-bisabolol (10.7%) were the most abundant components followed by neryl acetate (5.8%) and (E)-β-farnesene (5.7%). The composition was dominated by sesquiterpene hydrocarbons and oxygen containing sesquiterpenes (49.2–71.1%). The oils are clearly different from those of all other previously reported T. dolichophyllum oils. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712281 [article] Variation in the constituents of tanacetum dolichophyllum (kitam.) kitam. from different locations of uttarakhand himalaya (India) [texte imprimé] / S. Zafar Haider, Auteur ; Hema Lohani, Auteur ; Sunil Sah, Auteur . - 2012 . - pp. 48-51.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 48-51
Mots-clés : Tanacetum dolichophyllum Essential oil composition β-eudesmol Cis-lanceol α-bisabolol Index. décimale : 646 Résumé : Essential oils isolated from the aerial parts of two different populations of Tanacetum dolichophyllum (Kitam.) Kitam. (syn. Tanacetum longifolium Wall.) were analyzed by GC and GC/MS in order to determine the variation of concentration in their constituents. Plant collected from Dayara meadow (Sample I) afforded cis-lanceol (11.8%), β-pinene (10.7%), (E)- β-farnesene (7.4%), α-bisabolol (7.2%), β-eudesmol (5.2%) and terpinen-4-ol (5.1%) as the major constituents, whereas in the sample collected from Tungnath (Sample II) β-eudesmol (31.4%), α-bisabolol (10.7%) were the most abundant components followed by neryl acetate (5.8%) and (E)-β-farnesene (5.7%). The composition was dominated by sesquiterpene hydrocarbons and oxygen containing sesquiterpenes (49.2–71.1%). The oils are clearly different from those of all other previously reported T. dolichophyllum oils. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712281
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 52-56
Titre : Determination of the volatile components in the fruits and leaves of guava plants (psidium guajava L.) grown on jeju Island, south Korea Type de document : texte imprimé Auteurs : Sarah Lee, Auteur ; Young-Suk Km, Auteur ; Hyung-Kyoon Choi, Auteur Année de publication : 2012 Article en page(s) : pp. 52-56 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Psidium guajava L. Volatile components Fruits Leaves Solvent-assisted flavor evaporation Gas chromatography time-of-flight mass spectrometry Index. décimale : 646 Résumé : Volatile components in the fruits and leaves of guava plants (Psidium guajava L.) grown on Jeju Island, South Korea, were isolated by solvent-assisted flavor evaporation and then analyzed by gas chromatography time-of-flight mass spectrometry. In total, 35 components were identified in the guava samples. Terpene hydrocarbons and C6 compounds were the most abundant components in both the fruits and leaves. α-Pinene, β-caryophyllene, α-humulene, β-(Z)-ocimene, and (Z)-3-hexenal were the major components in both, possibly contributing to their characteristic odor notes. Carbonyls and esters such as 3-hydroxy-2-butanone, 2-heptanone, benzaldehyde, ethyl hexanoate, (Z)- 3-hexenyl acetate, hexyl butanoate and ethyl octanoate were only found in the fruits, whereas terpene hydrocarbons such as camphene, sabinene, eucalyptol, α-terpinolene, S-cadinene, and germacrene B were only identified in the leaves. In particular, sabinene, germacrene B, Δ;-farnesene, and germacrene D were found in the leaves of guava plants cultivated on Jeju Island, although they have not been found in previous studies of the leaves of guava plants cultivated in other countries. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712282 [article] Determination of the volatile components in the fruits and leaves of guava plants (psidium guajava L.) grown on jeju Island, south Korea [texte imprimé] / Sarah Lee, Auteur ; Young-Suk Km, Auteur ; Hyung-Kyoon Choi, Auteur . - 2012 . - pp. 52-56.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 52-56
Mots-clés : Psidium guajava L. Volatile components Fruits Leaves Solvent-assisted flavor evaporation Gas chromatography time-of-flight mass spectrometry Index. décimale : 646 Résumé : Volatile components in the fruits and leaves of guava plants (Psidium guajava L.) grown on Jeju Island, South Korea, were isolated by solvent-assisted flavor evaporation and then analyzed by gas chromatography time-of-flight mass spectrometry. In total, 35 components were identified in the guava samples. Terpene hydrocarbons and C6 compounds were the most abundant components in both the fruits and leaves. α-Pinene, β-caryophyllene, α-humulene, β-(Z)-ocimene, and (Z)-3-hexenal were the major components in both, possibly contributing to their characteristic odor notes. Carbonyls and esters such as 3-hydroxy-2-butanone, 2-heptanone, benzaldehyde, ethyl hexanoate, (Z)- 3-hexenyl acetate, hexyl butanoate and ethyl octanoate were only found in the fruits, whereas terpene hydrocarbons such as camphene, sabinene, eucalyptol, α-terpinolene, S-cadinene, and germacrene B were only identified in the leaves. In particular, sabinene, germacrene B, Δ;-farnesene, and germacrene D were found in the leaves of guava plants cultivated on Jeju Island, although they have not been found in previous studies of the leaves of guava plants cultivated in other countries. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712282
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 57-60
Titre : Evaluation of salvia officinalis L. essential oil under selenium treatments Type de document : texte imprimé Auteurs : Khalid A. Khalid, Auteur Année de publication : 2012 Article en page(s) : pp. 57-60 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Salvia officinalis L. Essential oil Selenium treatments Ketones α-β-thujone and camphor Index. décimale : 646 Résumé : The effects of selenium treatments [0 (control), 2, 4, 6 and 8 mg 1−1] on essential oil extracted from Salvia officinalis L. plants were investigated by GC and GC/MS during two successive seasons 2008 and 2009. Essential oil content (% and g plant −1) increased with various treatments of selenium compared with control. The highest essential oil percentage (0.5%) was recorded at 8 mg 1−1 selenium treatment. Greatest essential oil yields (0.1 g plant−1) were recorded at 6 and 8 mg l−1 selenium treatments in both seasons. Twenty-two constituents were identified in essential oil extracted from Salvia officinalis L. aerial parts, accounting for 98.6–99.9% of total constituents, and belong to eight chemical main classes. Ketones class was the major one. The major constituents of Salvia officinalis L. essential oil were α-, β-thujone and camphor which increased as selenium level increase. The highest amounts of major compounds [α-thujone (55.0%), β- thujone (12.7%) and camphor (31.8%)] resulted from 8 mg l−1 selenium treatment. The chemical classes of essential oil such as monoterpene hydrocarbons, oxygenated monoterpenes, sesquiterpene hydrocarbons and oxygenated sesquiterpenes decreased in all selenium treatments compared with control. However Ketones class increased as selenium level increase. On the other hand, ethers, aldehydes and esters decreased at all selenium treatments except for 2 mg l−1 selenium treatment were increased compared with control. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712283 [article] Evaluation of salvia officinalis L. essential oil under selenium treatments [texte imprimé] / Khalid A. Khalid, Auteur . - 2012 . - pp. 57-60.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 57-60
Mots-clés : Salvia officinalis L. Essential oil Selenium treatments Ketones α-β-thujone and camphor Index. décimale : 646 Résumé : The effects of selenium treatments [0 (control), 2, 4, 6 and 8 mg 1−1] on essential oil extracted from Salvia officinalis L. plants were investigated by GC and GC/MS during two successive seasons 2008 and 2009. Essential oil content (% and g plant −1) increased with various treatments of selenium compared with control. The highest essential oil percentage (0.5%) was recorded at 8 mg 1−1 selenium treatment. Greatest essential oil yields (0.1 g plant−1) were recorded at 6 and 8 mg l−1 selenium treatments in both seasons. Twenty-two constituents were identified in essential oil extracted from Salvia officinalis L. aerial parts, accounting for 98.6–99.9% of total constituents, and belong to eight chemical main classes. Ketones class was the major one. The major constituents of Salvia officinalis L. essential oil were α-, β-thujone and camphor which increased as selenium level increase. The highest amounts of major compounds [α-thujone (55.0%), β- thujone (12.7%) and camphor (31.8%)] resulted from 8 mg l−1 selenium treatment. The chemical classes of essential oil such as monoterpene hydrocarbons, oxygenated monoterpenes, sesquiterpene hydrocarbons and oxygenated sesquiterpenes decreased in all selenium treatments compared with control. However Ketones class increased as selenium level increase. On the other hand, ethers, aldehydes and esters decreased at all selenium treatments except for 2 mg l−1 selenium treatment were increased compared with control. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712283
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 61-69
Titre : Application of coacervative microextraction for extraction of volatile compounds in thymus essential oil and fruit juices by gas chromatography with flame ionization detection Type de document : texte imprimé Auteurs : Fateme Kardani, Auteur ; Ali Daneshfar, Auteur ; Reza Sahrae, Auteur Année de publication : 2012 Article en page(s) : pp. 61-69 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Coacervative Microextraction Thymus Fruit juices GC-FID Index. décimale : 646 Résumé : In this work, extraction of volatile compound in thymus essential oil and fruit juice samples was followed using coacervative microextraction technique by gas chromatography with flame ionization detection (GC-FID). Oleic acid (10 pL) was dissolved in THF (3.5 mL) in 10 mL volumetric flask. Aqueous sample (6.5 mL) containing analytes and internal standard was added to give a final volume of 10 mL. The coacervate formed instantaneously, two phases were separated by centrifugation. The analytes in the coacervate phase was determined by the gas chromatograph. The influence of several important parameters on extraction efficiency was evaluated. Under optimized experimental conditions, the calibration graphs were linear in the range of 0.5–30.0 mg/L with coefficient of determination more than 0.994 for all analytes. The limits of detection values were in the range of 0.13–0.31 mg/L. The limit of quantification values were in the range of 0.42–1.03 mg/L. This procedure was successfully applied with satisfactory results to the determination of α-pinene, β-myrcene, camphene, limonene, limonene-oxide, linalool, and borneol in spiked samples. The relative recoveries of samples ranged from 71.6 % to 116.0 %, with relative standard deviations varying from 1.7 % to 7.8%. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712284 [article] Application of coacervative microextraction for extraction of volatile compounds in thymus essential oil and fruit juices by gas chromatography with flame ionization detection [texte imprimé] / Fateme Kardani, Auteur ; Ali Daneshfar, Auteur ; Reza Sahrae, Auteur . - 2012 . - pp. 61-69.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 61-69
Mots-clés : Coacervative Microextraction Thymus Fruit juices GC-FID Index. décimale : 646 Résumé : In this work, extraction of volatile compound in thymus essential oil and fruit juice samples was followed using coacervative microextraction technique by gas chromatography with flame ionization detection (GC-FID). Oleic acid (10 pL) was dissolved in THF (3.5 mL) in 10 mL volumetric flask. Aqueous sample (6.5 mL) containing analytes and internal standard was added to give a final volume of 10 mL. The coacervate formed instantaneously, two phases were separated by centrifugation. The analytes in the coacervate phase was determined by the gas chromatograph. The influence of several important parameters on extraction efficiency was evaluated. Under optimized experimental conditions, the calibration graphs were linear in the range of 0.5–30.0 mg/L with coefficient of determination more than 0.994 for all analytes. The limits of detection values were in the range of 0.13–0.31 mg/L. The limit of quantification values were in the range of 0.42–1.03 mg/L. This procedure was successfully applied with satisfactory results to the determination of α-pinene, β-myrcene, camphene, limonene, limonene-oxide, linalool, and borneol in spiked samples. The relative recoveries of samples ranged from 71.6 % to 116.0 %, with relative standard deviations varying from 1.7 % to 7.8%. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712284
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 70-74
Titre : Composition and antioxidant activity of hydrodistilled essential oil of serbian ajuga chamaepitys (L.) schreber ssp. chia (schreber) arcangeli Type de document : texte imprimé Auteurs : Violeta D. Mitić, Auteur ; Vesna P. Stankov-Jovanović, Auteur ; Olga P. Jovanović, Auteur Année de publication : 2012 Article en page(s) : pp. 70-74 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Ajuga chamaepitys (L.) Schreber ssp. chia (Schreber) arcangeli Lamiaceae Essential oil composition Aantioxidant activities Index. décimale : 646 Résumé : The chemical composition of the essential oil of the aerial parts of the Ajuga chamaepitys (L.) Schreber ssp. chia (Schreber) Arcangeli collected on Vidlic Mountain (Serbia) from two neighboring localities: normal environmental conditions (NEC) and post fire environmental conditions (PFEC) has been studied by GC and GC/MS. Thirty eight compounds were identified in NEC oil and thirty four in PFEC oil accounted 98.3 % and 98.2 % of the total oil, respectively. The major constituents of NEC and PFEC oil were: α-pinene (10.9%, 5.4%), β-pinene (22.0%, 14.8%), germacrene D (16.2%, 26.8%), germacrene B (5.9%, 13.6%) and viridiflorol (6.0%, 5.7%), respectively. The antioxidant properties of both oils were evaluated emploing electron transfer antioxidant assays: Folin-Ciocalteu, DPPH and reducing power asaay Fe (III) to Fe(II). Both oil samples had approximately equal and moderate activity in reducing Fe(III) to Fe(II) and Mo(VI) to Mo(V), and weak radical scavenging activity. This is the first report on the content and composition of the essential oil of A. chamaepitys ssp. chia grows in Serbia and also the first report about its antioxidant activity. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712285 [article] Composition and antioxidant activity of hydrodistilled essential oil of serbian ajuga chamaepitys (L.) schreber ssp. chia (schreber) arcangeli [texte imprimé] / Violeta D. Mitić, Auteur ; Vesna P. Stankov-Jovanović, Auteur ; Olga P. Jovanović, Auteur . - 2012 . - pp. 70-74.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 6 (Novembre/Décembre 2011) . - pp. 70-74
Mots-clés : Ajuga chamaepitys (L.) Schreber ssp. chia (Schreber) arcangeli Lamiaceae Essential oil composition Aantioxidant activities Index. décimale : 646 Résumé : The chemical composition of the essential oil of the aerial parts of the Ajuga chamaepitys (L.) Schreber ssp. chia (Schreber) Arcangeli collected on Vidlic Mountain (Serbia) from two neighboring localities: normal environmental conditions (NEC) and post fire environmental conditions (PFEC) has been studied by GC and GC/MS. Thirty eight compounds were identified in NEC oil and thirty four in PFEC oil accounted 98.3 % and 98.2 % of the total oil, respectively. The major constituents of NEC and PFEC oil were: α-pinene (10.9%, 5.4%), β-pinene (22.0%, 14.8%), germacrene D (16.2%, 26.8%), germacrene B (5.9%, 13.6%) and viridiflorol (6.0%, 5.7%), respectively. The antioxidant properties of both oils were evaluated emploing electron transfer antioxidant assays: Folin-Ciocalteu, DPPH and reducing power asaay Fe (III) to Fe(II). Both oil samples had approximately equal and moderate activity in reducing Fe(III) to Fe(II) and Mo(VI) to Mo(V), and weak radical scavenging activity. This is the first report on the content and composition of the essential oil of A. chamaepitys ssp. chia grows in Serbia and also the first report about its antioxidant activity. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9712285
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