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Journal of essential oil research |
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Ajouter le résultat dans votre panierComposition of the essential oil of leaves and berries of Algerian myrtle (Myrtus communis L.) / Moussa Brada in The journal of essential oil research, Vol. 24 N° 1 (Fevrier 2012)
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 1-3
Titre : Composition of the essential oil of leaves and berries of Algerian myrtle (Myrtus communis L.) Type de document : texte imprimé Auteurs : Moussa Brada, Auteur ; N. Tabti, Auteur ; H. Boutoumi, Auteur Année de publication : 2012 Article en page(s) : pp. 1-3 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Myrtus communis Essential oil composition α-pinene 1,8-cineole Linalool Estragole Résumé : Myrtus communis L. essential oils were obtained by hydrodistillation, and the yields were 0.3% (w/w) and 0.1% for leaves and berries, respectively. Using gas chromatography (GC) and gas chromatography/mass spectometry (GC/MS), 25 components were identified in berry oil representing 89.5% of the oil composition. Linalool was the major compound in berry oil (36.2%) followed by estragole (18.4%) and 1,8-cineole (11.4%). Leaf oil was composed of 28 compounds representing 95.4% of the total composition of the oil. α-pinene was the major constituent of leaf oil at a concentration of (46.9%), followed by 1,8-cineole (25.2%). The two Algerian oils were characterized by the lack of myrtenyl acetate. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645299 [article] Composition of the essential oil of leaves and berries of Algerian myrtle (Myrtus communis L.) [texte imprimé] / Moussa Brada, Auteur ; N. Tabti, Auteur ; H. Boutoumi, Auteur . - 2012 . - pp. 1-3.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 1-3
Mots-clés : Myrtus communis Essential oil composition α-pinene 1,8-cineole Linalool Estragole Résumé : Myrtus communis L. essential oils were obtained by hydrodistillation, and the yields were 0.3% (w/w) and 0.1% for leaves and berries, respectively. Using gas chromatography (GC) and gas chromatography/mass spectometry (GC/MS), 25 components were identified in berry oil representing 89.5% of the oil composition. Linalool was the major compound in berry oil (36.2%) followed by estragole (18.4%) and 1,8-cineole (11.4%). Leaf oil was composed of 28 compounds representing 95.4% of the total composition of the oil. α-pinene was the major constituent of leaf oil at a concentration of (46.9%), followed by 1,8-cineole (25.2%). The two Algerian oils were characterized by the lack of myrtenyl acetate. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645299
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 5-11
Titre : Composition and microbial activity of thyme (Thymus algeriensis genuinus) essential oil Type de document : texte imprimé Auteurs : Smain Chemat, Auteur ; Ratiba Cherfouh, Auteur ; Brahim Youcef Meklati, Auteur Année de publication : 2012 Article en page(s) : pp. 5-11 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Thymus algeriensis genuinus Essential oil Thymol Conservation Résumé : In this study, the essential oil composition of Thymus algeriensis genuinus from Algeria was characterised by gas chromatography with flame ionization detector (GC/FID) and confirmed by gas chromatography coupled to mass spectrometry (GC/MS). The combination of GC/FID and GC/MS has resulted in the identification of 48 compounds then classified into four classes: monoterpene hydrocarbons, oxygenated monoterpenes, sesquiterpene hydrocarbons and oxygenated sesquiterpenes. The essential oil obtained by hydrodistillation is characterized by a rich content of phenolic compounds such as thymol (71%) and carvacrol (4%) versus a minor presence of monoterperne hydrocarbons like p-cymene (3%) and γ-terpinene (0.5%). Furthermore, extraction kinetic study has revealed the effect of conservation period on oil yield and extraction rate especially during the first thirty minutes. As a consequence, we would argue that high moisture content in fresh plant material would produce a high oil yield in a reduced processing time and that reduced conservation period would prevent loss of volatiles before processing. Finally, the antimicrobial and antifungal activities were evaluated using the disc diffusion method. The extracted essential oil has presented a high inhibiting activity against eight bacterial strains up to 75 mm and two species of fungus up to 45 mm. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645303 [article] Composition and microbial activity of thyme (Thymus algeriensis genuinus) essential oil [texte imprimé] / Smain Chemat, Auteur ; Ratiba Cherfouh, Auteur ; Brahim Youcef Meklati, Auteur . - 2012 . - pp. 5-11.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 5-11
Mots-clés : Thymus algeriensis genuinus Essential oil Thymol Conservation Résumé : In this study, the essential oil composition of Thymus algeriensis genuinus from Algeria was characterised by gas chromatography with flame ionization detector (GC/FID) and confirmed by gas chromatography coupled to mass spectrometry (GC/MS). The combination of GC/FID and GC/MS has resulted in the identification of 48 compounds then classified into four classes: monoterpene hydrocarbons, oxygenated monoterpenes, sesquiterpene hydrocarbons and oxygenated sesquiterpenes. The essential oil obtained by hydrodistillation is characterized by a rich content of phenolic compounds such as thymol (71%) and carvacrol (4%) versus a minor presence of monoterperne hydrocarbons like p-cymene (3%) and γ-terpinene (0.5%). Furthermore, extraction kinetic study has revealed the effect of conservation period on oil yield and extraction rate especially during the first thirty minutes. As a consequence, we would argue that high moisture content in fresh plant material would produce a high oil yield in a reduced processing time and that reduced conservation period would prevent loss of volatiles before processing. Finally, the antimicrobial and antifungal activities were evaluated using the disc diffusion method. The extracted essential oil has presented a high inhibiting activity against eight bacterial strains up to 75 mm and two species of fungus up to 45 mm. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645303
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 13-17
Titre : Chemical composition and antibacterial activity of the essential oils from Helietta apiculata Benth. (Rutaceae) Type de document : texte imprimé Auteurs : Regina Ferronatto, Auteur ; Camila Carraro, Auteur ; Katiuska Marins, Auteur Année de publication : 2012 Article en page(s) : pp. 13-17 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Helietta apiculata Essential oil composition Limonene Elemol β-elemene Spathulenol Antibacterial activity Résumé : The chemical composition of the essential oil obtained from the leaves of Helietta apiculata collected in different seasons in southern Brazil, was analyzed by gas chromatography (GC) and gas chromatography/mass spectometry (GC.MS). Twenty-eight compounds were identified and limonene was the major compound found for all seasons, 29.1% (spring), 24.8% (summer), 30.2% (autumn) and 28.5% (winter). The essential oil obtained in summer and autumn yielded higher concentrations of monoterpenes, winter and spring yielded the highest concentrations of sesquiterpenes. The essential oil collected in summer and autumn showed higher activity against the bacteria tested, and the oil collected in spring was effective only against E. coli. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645304 [article] Chemical composition and antibacterial activity of the essential oils from Helietta apiculata Benth. (Rutaceae) [texte imprimé] / Regina Ferronatto, Auteur ; Camila Carraro, Auteur ; Katiuska Marins, Auteur . - 2012 . - pp. 13-17.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 13-17
Mots-clés : Helietta apiculata Essential oil composition Limonene Elemol β-elemene Spathulenol Antibacterial activity Résumé : The chemical composition of the essential oil obtained from the leaves of Helietta apiculata collected in different seasons in southern Brazil, was analyzed by gas chromatography (GC) and gas chromatography/mass spectometry (GC.MS). Twenty-eight compounds were identified and limonene was the major compound found for all seasons, 29.1% (spring), 24.8% (summer), 30.2% (autumn) and 28.5% (winter). The essential oil obtained in summer and autumn yielded higher concentrations of monoterpenes, winter and spring yielded the highest concentrations of sesquiterpenes. The essential oil collected in summer and autumn showed higher activity against the bacteria tested, and the oil collected in spring was effective only against E. coli. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645304
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 19-24
Titre : Composition of essential oils and secretory structures of Baccharis anomala, B. megapotamica and B. ochracea Type de document : texte imprimé Auteurs : Jane M. Budel, Auteur ; Márcia R. Duarte, Auteur ; Patrícia M. Döll-Boscardin, Auteur Année de publication : 2012 Article en page(s) : pp. 19-24 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Asteraceae Baccharis spp. Essential oil Secretory ducts Trichomes Résumé : The chemical composition of the essential oils and the anatomical structures of the aerial parts from Baccharis anomala, B. megapotamica and B. ochracea growing in Brazil were studied. The volatile constituents isolated by hydrodistillation were analyzed by gas chromatograph coupled to a mass spectrometer detector (GC-MSD) and gas chromatograph coupled to a flame ionization detector (GC-FID). The botanical material was fixed, sectioned and prepared according to light and scanning microtechniques. The essential oil from B. anomala yielded 0.18% and showed α-acorenol (16.0%), spathulenol (13.3%) and caryophyllene oxide (12.1%) as the main components. Spathulenol (28.0% and 37.1%) and caryophyllene oxide (20.4% and 30.8%) represented the major constituents of the essential oils from B. megapotamica (yield = 0.17%) and B. ochracea (yield = 0.18%), respectively. The leaves and stems of these Baccharis species showed non-glandular trichomes and secretory ducts. Glandular trichomes were also found on the vegetative aerial parts of B. megapotamica. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645634 [article] Composition of essential oils and secretory structures of Baccharis anomala, B. megapotamica and B. ochracea [texte imprimé] / Jane M. Budel, Auteur ; Márcia R. Duarte, Auteur ; Patrícia M. Döll-Boscardin, Auteur . - 2012 . - pp. 19-24.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 19-24
Mots-clés : Asteraceae Baccharis spp. Essential oil Secretory ducts Trichomes Résumé : The chemical composition of the essential oils and the anatomical structures of the aerial parts from Baccharis anomala, B. megapotamica and B. ochracea growing in Brazil were studied. The volatile constituents isolated by hydrodistillation were analyzed by gas chromatograph coupled to a mass spectrometer detector (GC-MSD) and gas chromatograph coupled to a flame ionization detector (GC-FID). The botanical material was fixed, sectioned and prepared according to light and scanning microtechniques. The essential oil from B. anomala yielded 0.18% and showed α-acorenol (16.0%), spathulenol (13.3%) and caryophyllene oxide (12.1%) as the main components. Spathulenol (28.0% and 37.1%) and caryophyllene oxide (20.4% and 30.8%) represented the major constituents of the essential oils from B. megapotamica (yield = 0.17%) and B. ochracea (yield = 0.18%), respectively. The leaves and stems of these Baccharis species showed non-glandular trichomes and secretory ducts. Glandular trichomes were also found on the vegetative aerial parts of B. megapotamica. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645634
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 25-29
Titre : Essential oil content and composition of Achillea biebersteinii Afan. in different plant parts and phenological stages Type de document : texte imprimé Auteurs : Seyed Fazel Mirahmadi, Auteur ; Fatemeh Sefidkon, Auteur ; Mohammad Reza Hassandokht, Auteur Année de publication : 2012 Article en page(s) : pp. 25-29 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Achillea biebersteinii Afan. Essential oil Phenological stagesLimonene 4aα-7α-7aα-nepetalactone 4aα-7β-7aα-nepetalactone Résumé : In this study, the essential oil content and composition of Achillea biebersteinii Afan. at different phenological stages including vegetative, floral budding, full flowering (leaves, stems and flowers) and fruit set were studied by means of gas chromatography (GC) and gas chromatography–mass spectometry (GC–MS). All oil samples from different plant parts and phenological stages were mostly made up of monoterpenoid compounds (88.6 – 99.6%), especially oxygenated ones (52.4 – 82.4%). The oil of the vegetative stage contained high amounts of limonene, 4aα-7β-7aα-nepetalactone, p-cymene and 1,8-cineole. The major constituents in the flower budding stage oil were found to be limonene, 1,8-cineole and 4aα-7β-7aα-nepetalactone. In the oil of the fruit set stage, γ-terpinene, p-cymene and cis-chrysanthenyl acetate were the predominant constituents. On the other hand, the most important compounds from the stem oil were 4aα-7α-7aα-nepetalactone, 1,8-cineole, 4aα-7β-7aα-nepetalactone and camphor. 4aα-7α-7aα-nepetalactone, limonene, 1,8-cineole and cis-p-menth-2-en-1-ol were found in high concentration in the oil of leaves, whereas 4aα-7α-7aα-nepetalactone, 4aα-7β-7aα-nepetalactone, limonene and p-cymene were present in large amounts in the oil of flowers. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645636 [article] Essential oil content and composition of Achillea biebersteinii Afan. in different plant parts and phenological stages [texte imprimé] / Seyed Fazel Mirahmadi, Auteur ; Fatemeh Sefidkon, Auteur ; Mohammad Reza Hassandokht, Auteur . - 2012 . - pp. 25-29.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 25-29
Mots-clés : Achillea biebersteinii Afan. Essential oil Phenological stagesLimonene 4aα-7α-7aα-nepetalactone 4aα-7β-7aα-nepetalactone Résumé : In this study, the essential oil content and composition of Achillea biebersteinii Afan. at different phenological stages including vegetative, floral budding, full flowering (leaves, stems and flowers) and fruit set were studied by means of gas chromatography (GC) and gas chromatography–mass spectometry (GC–MS). All oil samples from different plant parts and phenological stages were mostly made up of monoterpenoid compounds (88.6 – 99.6%), especially oxygenated ones (52.4 – 82.4%). The oil of the vegetative stage contained high amounts of limonene, 4aα-7β-7aα-nepetalactone, p-cymene and 1,8-cineole. The major constituents in the flower budding stage oil were found to be limonene, 1,8-cineole and 4aα-7β-7aα-nepetalactone. In the oil of the fruit set stage, γ-terpinene, p-cymene and cis-chrysanthenyl acetate were the predominant constituents. On the other hand, the most important compounds from the stem oil were 4aα-7α-7aα-nepetalactone, 1,8-cineole, 4aα-7β-7aα-nepetalactone and camphor. 4aα-7α-7aα-nepetalactone, limonene, 1,8-cineole and cis-p-menth-2-en-1-ol were found in high concentration in the oil of leaves, whereas 4aα-7α-7aα-nepetalactone, 4aα-7β-7aα-nepetalactone, limonene and p-cymene were present in large amounts in the oil of flowers. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645636
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 31-37
Titre : Chemical composition of essential oils of two species of the Lamiaceae family : Scutellaria volubilis and Lepechinia paniculata from Loja, Ecuador Type de document : texte imprimé Auteurs : Eduardo Valarezo, Auteur ; Andrea Castillo, Auteur ; Diana Guaya, Auteur Année de publication : 2012 Article en page(s) : pp. 31-37 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Scutellaria volubilis Lepechinia paniculata Lamiaceae Germacrene D Aromadendrene Résumé : Scutellaria volubilis and Lepechinia paniculata belong to the Lamiaceae family of species. They are used widely in traditional medicine in Ecuador. The physical properties and chemical composition of the essential oils from the aerial part of Scutellaria volubilis in its foliation – flowering stage and Lepechinia paniculata in its flowering phase have been studied after their hydrodistillation. The components of these essential oils were investigated by means of gas chromatography/mass spectrometry (GC/MS) and gas chromatography/flame ionization detection (GC/FID) techniques. Thirty-seven components were determined in the essential oil of S. volubilis. The principal constituents were found to be sesquiterpene hydrocarbons: germacrene D (20.4%), β-caryophyllene (17.5%), α-humulene (14.7%) and β-bisabolene (5.8%). Thirty-four components were identified in the essential oil of L. paniculata, the principal groups were sesquiterpene hydrocarbons such as aromadendrene (24.6%), viridiflorene (12.4%), β-selinene (7.4%) and valencene (6.7%). The monoterpene hydrocarbons were present in lower amounts as well as β-phellandrene (6.9%) and (7.7%). Oxygenated monoterpenes and sesquiterpenes contribute below 5% in both species. This is the first report on the chemical composition of this species. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645638 [article] Chemical composition of essential oils of two species of the Lamiaceae family : Scutellaria volubilis and Lepechinia paniculata from Loja, Ecuador [texte imprimé] / Eduardo Valarezo, Auteur ; Andrea Castillo, Auteur ; Diana Guaya, Auteur . - 2012 . - pp. 31-37.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 31-37
Mots-clés : Scutellaria volubilis Lepechinia paniculata Lamiaceae Germacrene D Aromadendrene Résumé : Scutellaria volubilis and Lepechinia paniculata belong to the Lamiaceae family of species. They are used widely in traditional medicine in Ecuador. The physical properties and chemical composition of the essential oils from the aerial part of Scutellaria volubilis in its foliation – flowering stage and Lepechinia paniculata in its flowering phase have been studied after their hydrodistillation. The components of these essential oils were investigated by means of gas chromatography/mass spectrometry (GC/MS) and gas chromatography/flame ionization detection (GC/FID) techniques. Thirty-seven components were determined in the essential oil of S. volubilis. The principal constituents were found to be sesquiterpene hydrocarbons: germacrene D (20.4%), β-caryophyllene (17.5%), α-humulene (14.7%) and β-bisabolene (5.8%). Thirty-four components were identified in the essential oil of L. paniculata, the principal groups were sesquiterpene hydrocarbons such as aromadendrene (24.6%), viridiflorene (12.4%), β-selinene (7.4%) and valencene (6.7%). The monoterpene hydrocarbons were present in lower amounts as well as β-phellandrene (6.9%) and (7.7%). Oxygenated monoterpenes and sesquiterpenes contribute below 5% in both species. This is the first report on the chemical composition of this species. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645638
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 39-44
Titre : Characterization of the volatile fraction of Nigritella nigra (L.) Rchb. F. (Orchidaceae), a rare species from the Central Alps Type de document : texte imprimé Auteurs : A. Tava, Auteur ; R. Cecotti, Auteur ; M. Confalonieri, Auteur Année de publication : 2012 Article en page(s) : pp. 39-44 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Benzyl alcohol Essential oil composition GC/MS analysis Nigritella nigra Orchidaceae Phenylacetaldehyde 2-phenylethanolVanillin Résumé : The volatile fraction from vegetative aerial parts and inflorescences of Nigritella nigra (L.) Rchb. F. (Orchidaceae) collected in Val Varrone (Orobie Alps, Italy) was isolated by steam distillation and analysed by gas chromatography/flame ionization detector (GC/FID) and gas chromatography/mass spectrometry (GC/MS). The oil yield was 0.2% and 0.9% (weight/fresh weight bases) for leaves and inflorescences, respectively. Several classes of compounds were detected, including alcohols, aldehydes, hydrocarbons, acids and terpenes. Volatiles from inflorescences were characterized by higher concentrations of alcohols, of which benzyl alcohol (28.9% of the total oil, 246.8 μg/g) and 2-phenylethanol (10.4%, 89.1 μg/g) were the most represented. Leaves were instead characterized by phenylacetaldehyde as the major constituent, quoted as 14.7% (24.0 μg/g) of the total volatiles, followed by linear chain saturated hydrocarbons, a class of compounds representing 40.1% (65.6 μg/g) of the total oil. The presence of vanillin, revealed in inflorescences only and quantified in this plant organ as 0.8% (6.5 μg/g) of the total volatiles, seems to be related to the typical chocolate-like fragrance characteristic of the flowers of this species. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645644 [article] Characterization of the volatile fraction of Nigritella nigra (L.) Rchb. F. (Orchidaceae), a rare species from the Central Alps [texte imprimé] / A. Tava, Auteur ; R. Cecotti, Auteur ; M. Confalonieri, Auteur . - 2012 . - pp. 39-44.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 39-44
Mots-clés : Benzyl alcohol Essential oil composition GC/MS analysis Nigritella nigra Orchidaceae Phenylacetaldehyde 2-phenylethanolVanillin Résumé : The volatile fraction from vegetative aerial parts and inflorescences of Nigritella nigra (L.) Rchb. F. (Orchidaceae) collected in Val Varrone (Orobie Alps, Italy) was isolated by steam distillation and analysed by gas chromatography/flame ionization detector (GC/FID) and gas chromatography/mass spectrometry (GC/MS). The oil yield was 0.2% and 0.9% (weight/fresh weight bases) for leaves and inflorescences, respectively. Several classes of compounds were detected, including alcohols, aldehydes, hydrocarbons, acids and terpenes. Volatiles from inflorescences were characterized by higher concentrations of alcohols, of which benzyl alcohol (28.9% of the total oil, 246.8 μg/g) and 2-phenylethanol (10.4%, 89.1 μg/g) were the most represented. Leaves were instead characterized by phenylacetaldehyde as the major constituent, quoted as 14.7% (24.0 μg/g) of the total volatiles, followed by linear chain saturated hydrocarbons, a class of compounds representing 40.1% (65.6 μg/g) of the total oil. The presence of vanillin, revealed in inflorescences only and quantified in this plant organ as 0.8% (6.5 μg/g) of the total volatiles, seems to be related to the typical chocolate-like fragrance characteristic of the flowers of this species. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645644
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 45-51
Titre : Volatile constituents of jabuticaba (Myrciaria jaboticaba (Vell.) O. Berg) fruits Type de document : texte imprimé Auteurs : Ina Plagemann, Auteur ; Ulrich Krings, Auteur ; Ralf G. Berger, Auteur Année de publication : 2012 Article en page(s) : pp. 45-51 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Jabuticaba (Myrciaria jaboticaba) Flavor AEDA Phytol Hexadecanoic acid Résumé : Volatile flavor compounds of jabuticaba fruits (Myrciaria jaboticaba) were isolated using continuous liquid-liquid extraction and analyzed by various gas chromatographic techniques. Preparative gas chromatography was used to concentrate a fraction rich in potent flavor compounds. A total of 45 compounds were identified for the first time with 23 components imparting a sensory impression. Among the identified compounds, terpenes, organic acids and alcohols were found to be the major volatile components. Terpenes in particular contributed to the flavor of jabuticaba fruits. Application of aroma extract dilution analysis showed that β-pinene (woody-green), δ-cadinene (medicine), 2-phenylethanol (honey, flowery), and linalool (flowery) were the most potent odorants of jabuticaba fruits. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645651 [article] Volatile constituents of jabuticaba (Myrciaria jaboticaba (Vell.) O. Berg) fruits [texte imprimé] / Ina Plagemann, Auteur ; Ulrich Krings, Auteur ; Ralf G. Berger, Auteur . - 2012 . - pp. 45-51.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 45-51
Mots-clés : Jabuticaba (Myrciaria jaboticaba) Flavor AEDA Phytol Hexadecanoic acid Résumé : Volatile flavor compounds of jabuticaba fruits (Myrciaria jaboticaba) were isolated using continuous liquid-liquid extraction and analyzed by various gas chromatographic techniques. Preparative gas chromatography was used to concentrate a fraction rich in potent flavor compounds. A total of 45 compounds were identified for the first time with 23 components imparting a sensory impression. Among the identified compounds, terpenes, organic acids and alcohols were found to be the major volatile components. Terpenes in particular contributed to the flavor of jabuticaba fruits. Application of aroma extract dilution analysis showed that β-pinene (woody-green), δ-cadinene (medicine), 2-phenylethanol (honey, flowery), and linalool (flowery) were the most potent odorants of jabuticaba fruits. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645651
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 53-59
Titre : The content and composition of the essential oil Found in Carum carvi L. commercial fruits obtained from different countries Type de document : texte imprimé Auteurs : Ain Raal, Auteur ; Elmar Arak, Auteur ; Anne Orav, Auteur Année de publication : 2012 Article en page(s) : pp. 53-59 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Carum carvi Caraway Apiaceae Essential oil Carvone Limonene European Pharmacopoeia Résumé : Caraway (Carum carvi L., Apiaceae) is a very popular spice and herb, which is widely applied in the food and pharmaceutical industry. Variations in the essential oil content and composition in twenty commercial caraway samples obtained from retail pharmacies and health shops in different countries were determined using hydrodistillation and capillary GC techniques. The essential oil yields ranged from 0.6% to 5.4%. Eighteen compounds, comprising more than 97% of the composition of oil, were identified in the caraway essential oils. The main components of the oils in caraway seeds were carvone (44.5–95.9%) and limonene (1.5–51.3%). Between the content of carvone and limonene the negative correlation -0.999 (p<0.01) was found. Additionally, β-myrcene (0–0.4%), trans-dihydrocarvone (0–0.5%), and trans-carveole (0–0.2%), as well as α-pinene, sabinene, n-octanal, trans-β-ocimene, γ-terpinene, linalool, cis- and trans-limonene oxide, cis-dihydrocarvone, cis-carveol, perillaldehyde, trans-anethole, and trans-β-caryophyllene were found in caraway oils. The content and composition of the essential oils in commercial caraway seeds is remarkably variable and conformed with the European Pharmacopoeia standards only in four samples among the 20 commercial caraway samples studied. The carvone and carvone-limonene chemotypes were found. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.646016 [article] The content and composition of the essential oil Found in Carum carvi L. commercial fruits obtained from different countries [texte imprimé] / Ain Raal, Auteur ; Elmar Arak, Auteur ; Anne Orav, Auteur . - 2012 . - pp. 53-59.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 53-59
Mots-clés : Carum carvi Caraway Apiaceae Essential oil Carvone Limonene European Pharmacopoeia Résumé : Caraway (Carum carvi L., Apiaceae) is a very popular spice and herb, which is widely applied in the food and pharmaceutical industry. Variations in the essential oil content and composition in twenty commercial caraway samples obtained from retail pharmacies and health shops in different countries were determined using hydrodistillation and capillary GC techniques. The essential oil yields ranged from 0.6% to 5.4%. Eighteen compounds, comprising more than 97% of the composition of oil, were identified in the caraway essential oils. The main components of the oils in caraway seeds were carvone (44.5–95.9%) and limonene (1.5–51.3%). Between the content of carvone and limonene the negative correlation -0.999 (p<0.01) was found. Additionally, β-myrcene (0–0.4%), trans-dihydrocarvone (0–0.5%), and trans-carveole (0–0.2%), as well as α-pinene, sabinene, n-octanal, trans-β-ocimene, γ-terpinene, linalool, cis- and trans-limonene oxide, cis-dihydrocarvone, cis-carveol, perillaldehyde, trans-anethole, and trans-β-caryophyllene were found in caraway oils. The content and composition of the essential oils in commercial caraway seeds is remarkably variable and conformed with the European Pharmacopoeia standards only in four samples among the 20 commercial caraway samples studied. The carvone and carvone-limonene chemotypes were found. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.646016
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 61-69
Titre : Effects of Mentha longifolia essential oil on ruminal and abomasal longitudinal smooth muscle in sheep Type de document : texte imprimé Auteurs : Ghader Jalilzadeh-Amin, Auteur ; Massoud Maham, Auteur ; Bahram Dalir-Naghadeh, Auteur Année de publication : 2012 Article en page(s) : pp. 61-69 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Mentha spp In vitro Motility Essential oil Sheep Smooth muscle 1, 8-cineole Pulegone Caryophyllene oxide Isomenthone Résumé : Mentha longifolia is grown commercially for production of oils and leaves. For centuries, this plant has widely been used traditionally as a folk remedy for treatment of human and ruminant gastrointestinal complaints in the Northwest of Iran. The essential oil of the plant was extracted using hydrodistillation. In the present study a total of 12 constituents, representing 96.6% of the oil were identified by gas chromatography/mass spectrometry (GC/MS). The main compounds were 1,8-cineole (19.8%), pulegone (17.3%), caryophyllene oxide (14.8%) and isomenthone (12.4%). The effects of 0.1 to 1000 g/mL essence of Mentha longofolia (EOML) on ruminal and abomasal smooth muscle of 24 healthy sheep were assessed in vitro. In the isolated ruminal and abomasal preparations, EOML (0.1–100 g/mL) exhibited a weak spasmogenic effect followed by relaxation and complete (p < 0.05) abolition of the spontaneous contraction at the highest dose (1000 g/mL). In contrast rat ileum only showed a dose-dependent relaxation effect, and tissues preincubated with EOML decreased the acetylcholine (ACh)-induced contraction. EOML (1000 g/mL) significantly inhibited the effect of ACh suggesting that the effect may be mediated via cholinergic receptors on smooth muscle. These primary data indicated that the plant contained spasmogenic and spasmolitic constituents. Moreover the results showed that the EOML profoundly alters gastrointestinal smooth muscle contraction in a dose-dependent and tissue-specific manner. The results suggested that EOML has the potential for development as a prokinetic and relaxant agent that may prevent or alleviate dysfunctions of gastrointestinal motility. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.646019 [article] Effects of Mentha longifolia essential oil on ruminal and abomasal longitudinal smooth muscle in sheep [texte imprimé] / Ghader Jalilzadeh-Amin, Auteur ; Massoud Maham, Auteur ; Bahram Dalir-Naghadeh, Auteur . - 2012 . - pp. 61-69.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 61-69
Mots-clés : Mentha spp In vitro Motility Essential oil Sheep Smooth muscle 1, 8-cineole Pulegone Caryophyllene oxide Isomenthone Résumé : Mentha longifolia is grown commercially for production of oils and leaves. For centuries, this plant has widely been used traditionally as a folk remedy for treatment of human and ruminant gastrointestinal complaints in the Northwest of Iran. The essential oil of the plant was extracted using hydrodistillation. In the present study a total of 12 constituents, representing 96.6% of the oil were identified by gas chromatography/mass spectrometry (GC/MS). The main compounds were 1,8-cineole (19.8%), pulegone (17.3%), caryophyllene oxide (14.8%) and isomenthone (12.4%). The effects of 0.1 to 1000 g/mL essence of Mentha longofolia (EOML) on ruminal and abomasal smooth muscle of 24 healthy sheep were assessed in vitro. In the isolated ruminal and abomasal preparations, EOML (0.1–100 g/mL) exhibited a weak spasmogenic effect followed by relaxation and complete (p < 0.05) abolition of the spontaneous contraction at the highest dose (1000 g/mL). In contrast rat ileum only showed a dose-dependent relaxation effect, and tissues preincubated with EOML decreased the acetylcholine (ACh)-induced contraction. EOML (1000 g/mL) significantly inhibited the effect of ACh suggesting that the effect may be mediated via cholinergic receptors on smooth muscle. These primary data indicated that the plant contained spasmogenic and spasmolitic constituents. Moreover the results showed that the EOML profoundly alters gastrointestinal smooth muscle contraction in a dose-dependent and tissue-specific manner. The results suggested that EOML has the potential for development as a prokinetic and relaxant agent that may prevent or alleviate dysfunctions of gastrointestinal motility. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.646019
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 71-81
Titre : Bioclimatic influence on essential oil composition in South Iberian Peninsular populations of Thymus zygis Type de document : texte imprimé Auteurs : Rafael Pérez-Sánchez, Auteur ; Cándido Gálvez, Auteur ; José L. Ubera, Auteur Année de publication : 2012 Article en page(s) : pp. 71-81 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Thymus zygis Labiatae Essential oils Variability Bioclimatic influence Environmental factors Canonical analysis Résumé : The variation in yield and essential oil composition of some plants of Thymus zygis was studied through their life cycle. The relationship between the concentration of the essential oils’ main compounds and the most frequently used bioclimatic indices was stated. Individual samples from seven populations growing wild in the South Iberian Peninsula were studied to assess the phenological variation of their oils. The samples showed a maximum yield at the flowering stage. The most representative compounds were selected, statistically analyzed and clustered in two groups, called thymol and γ-terpinene according to their behavior through the cycle of the plants studied. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.646025 [article] Bioclimatic influence on essential oil composition in South Iberian Peninsular populations of Thymus zygis [texte imprimé] / Rafael Pérez-Sánchez, Auteur ; Cándido Gálvez, Auteur ; José L. Ubera, Auteur . - 2012 . - pp. 71-81.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 71-81
Mots-clés : Thymus zygis Labiatae Essential oils Variability Bioclimatic influence Environmental factors Canonical analysis Résumé : The variation in yield and essential oil composition of some plants of Thymus zygis was studied through their life cycle. The relationship between the concentration of the essential oils’ main compounds and the most frequently used bioclimatic indices was stated. Individual samples from seven populations growing wild in the South Iberian Peninsula were studied to assess the phenological variation of their oils. The samples showed a maximum yield at the flowering stage. The most representative compounds were selected, statistically analyzed and clustered in two groups, called thymol and γ-terpinene according to their behavior through the cycle of the plants studied. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.646025
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 83-90
Titre : Essential oil composition and antioxidant activity of leaves and flowers of Skimmia anquetilia N.P. Taylor & Airy Shaw Type de document : texte imprimé Auteurs : Manjul Gondwal, Auteur ; Om Prakash, Auteur ; Anil K. Pant, Auteur Année de publication : 2012 Article en page(s) : pp. 83-90 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Skimmia anquetilia Rutaceae Essential oils Antioxidant activity Phenolics Résumé : The essential oils of the leaves and flowers of Skimmia anquetilia N.P.Taylor & Airy Shaw (family: Rutaceae) were examined by the combination of gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). The analysis of the oils from leaves and flowers revealed the presence of β-phellandrene (1.8%, 18.4%), geijerene (2.0%, 15.0%), germacrene B (11.6%, 2.0%), linalyl acetate (7.3%, 11.2%), linalool (9.5%, 9.4%), α-terpineol (5.6%, 4.4%) and pregeijerene (0.2%, 5.6%) as major constituents. The antioxidant activity of the leaf and flower oils was studied and compared by different methods including their effect on reducing power, chelating properties of Fe+2 and in vitro 2’2’-diphenylpicrylhadrazyl (DPPH) radical-scavenging activity. The total phenolic contents in the water extracts of leaf and flower were estimated and compared. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.646034 [article] Essential oil composition and antioxidant activity of leaves and flowers of Skimmia anquetilia N.P. Taylor & Airy Shaw [texte imprimé] / Manjul Gondwal, Auteur ; Om Prakash, Auteur ; Anil K. Pant, Auteur . - 2012 . - pp. 83-90.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 83-90
Mots-clés : Skimmia anquetilia Rutaceae Essential oils Antioxidant activity Phenolics Résumé : The essential oils of the leaves and flowers of Skimmia anquetilia N.P.Taylor & Airy Shaw (family: Rutaceae) were examined by the combination of gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). The analysis of the oils from leaves and flowers revealed the presence of β-phellandrene (1.8%, 18.4%), geijerene (2.0%, 15.0%), germacrene B (11.6%, 2.0%), linalyl acetate (7.3%, 11.2%), linalool (9.5%, 9.4%), α-terpineol (5.6%, 4.4%) and pregeijerene (0.2%, 5.6%) as major constituents. The antioxidant activity of the leaf and flower oils was studied and compared by different methods including their effect on reducing power, chelating properties of Fe+2 and in vitro 2’2’-diphenylpicrylhadrazyl (DPPH) radical-scavenging activity. The total phenolic contents in the water extracts of leaf and flower were estimated and compared. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.646034
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