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Mario Marchetti - One of the best experts on this subject based on the ideXlab platform.
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Chemical composition and variation of the essential oils of wild Sardinian Helichrysum italicum G. Don subps. microphyllum (Wild) Nym from vegetative period to post blooming time.
Journal of Essential Oil Research, 2010Co-Authors: M. Usai, A.f. Bernardini, M. Foddai, A. Muselli, J. Costa, Mario MarchettiAbstract:The essential oils obtained by water distillation from the aerial parts of Helichrysum italicum g. Don subsp. Microphyllum (Willd.) Nym. were analyzed by GC and GC/MS. Three different populations growing at different elevations and under different weather conditions were studied from their vegetative period to post-blooming time. Forty-eight constituents accounting for between 96.5% and 83.0% of total oils have been identified and quantified. Among the identified constituents those present in the highest percentage were neryl acetate (17.6-35.6%), Nerol (3.7-14.4%) and eudesmen-5-en-11-ol (6.4-23.5%). Among them, the neryl acetal percentage decreased when 5-eudesmen-11-ol percentage increased, and limonene reached 7% relative composition. The main fraction of the oil consisted of oxygenated compounds present in higher concentrations in June.
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a comparative study of volatile constituents of two helichrysum italicum roth guss don fil subspecies growing in corsica france tuscany and sardinia italy
Flavour and Fragrance Journal, 2003Co-Authors: A. Bianchini, Guido Flamini, Antoinefrancois Bernardini, Pierre Tomi, I. Morelli, P.-l. Cioni, M. Usai, Mario MarchettiAbstract:The essential oils obtained by water distillation from the aerial parts of two Helichrysum italicum ssp. growing in Corsica (France), Tuscany and Sardinia (Italy) were analysed by GC–RI and GC–MS. The essential oils prepared from Corsican and Tuscan Helichrysum italicum subsp. italicum exhibited two different compositions. Corsican oils were characterized by the pre-eminence of oxygenated compounds: neryl acetate (major compound), neryl propionate, Nerol, acyclic ketones and β-diketones. Conversely, Tuscan oils were found to exhibit higher contents of hydrocarbons (α-pinene, β-caryophyllene, α- and β-selinenes). The comparison of essential oils hydrodistilled from Corsican and Sardinian Helichrysum italicum subsp. microphyllum showed almost similar chemical compositions. The main constituents were: neryl acetate, Nerol, neryl propionate, linalool, eudesm-5-en-11-ol and γ-curcumene. Copyright © 2003 John Wiley & Sons, Ltd.
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A comparative study of volatile constituents of two Helichrysum italicum (Roth) Guss. Don Fil subspecies growing in Corsica (France), Tuscany and Sardinia (Italy)
Flavour and Fragrance Journal, 2003Co-Authors: A. Bianchini, Guido Flamini, Pierre Tomi, A.f. Bernardini, I. Morelli, P.-l. Cioni, M. Usai, Mario MarchettiAbstract:The essential oils obtained by water distillation from the aerial parts of two Helichrysum italicum ssp. growing in Corsica (France). Tuscany and Sardinia (Ita1y) were analysed by GC-RI and GC-MS. The essential oils prepared from Corsican and Tuscan Helichrysum italicum subsp. italicum exhibited two different compositions. Corsican oils were characterized by the pre-eminence of oxygenated compounds: neryl acetate (major compound), neryl propionate, Nerol, acyclic ketones and -diketones. Conversely, Tuscan oils were found to exhibit higher contents of hydrocarbons (-pinene, -caryophyllene, - and -selinenes). The comparison of essential oils hydrodistiIled from Corsican and Sardinian Helichrysum italicum subsp. microphyllum showed almost similar chemical compositions. The main constituents were: neryl acetate, Nerol, neryl propionate, linalool, eudesm-5-en-11-ol and -curcumene.
M. Usai - One of the best experts on this subject based on the ideXlab platform.
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chemical composition and variation of the essential oil of wild sardinian helichrysum italicum g don subsp microphyllum willd nym from vegetative period to post blooming
Journal of Essential Oil Research, 2010Co-Authors: M. Usai, Antoinefrancois Bernardini, M. Foddai, A. Muselli, J. Costa, M MarchettiAbstract:Abstract The essential oils obtained by water distillation from the aerial parts of Helichrysum italicum G. Don subsp. microphyllum (Willd.) Nym. were analyzed by gC and gC/MS. Three different populations growing at different elevations and under different weather conditions were studied from their vegetative period to post-blooming time. Forty-eight constituents accounting for between 96.5% and 83.0% of total oils have been identified and quantified. Among the identified constituents those present in the highest percentage were neryl acetate (17.6–35.6%), Nerol (3.7–14.4%) and eudesmen-5-en-11-ol (6.4–23.5%). Among them, the neryl acetal percentage decreased when 5-eudesmen-11-ol percentage increased, and limonene reached 7% relative composition. The main fraction of the oil consisted of oxygenated compounds present in higher concentrations in June.
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Chemical composition and variation of the essential oils of wild Sardinian Helichrysum italicum G. Don subps. microphyllum (Wild) Nym from vegetative period to post blooming time.
Journal of Essential Oil Research, 2010Co-Authors: M. Usai, A.f. Bernardini, M. Foddai, A. Muselli, J. Costa, Mario MarchettiAbstract:The essential oils obtained by water distillation from the aerial parts of Helichrysum italicum g. Don subsp. Microphyllum (Willd.) Nym. were analyzed by GC and GC/MS. Three different populations growing at different elevations and under different weather conditions were studied from their vegetative period to post-blooming time. Forty-eight constituents accounting for between 96.5% and 83.0% of total oils have been identified and quantified. Among the identified constituents those present in the highest percentage were neryl acetate (17.6-35.6%), Nerol (3.7-14.4%) and eudesmen-5-en-11-ol (6.4-23.5%). Among them, the neryl acetal percentage decreased when 5-eudesmen-11-ol percentage increased, and limonene reached 7% relative composition. The main fraction of the oil consisted of oxygenated compounds present in higher concentrations in June.
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a comparative study of volatile constituents of two helichrysum italicum roth guss don fil subspecies growing in corsica france tuscany and sardinia italy
Flavour and Fragrance Journal, 2003Co-Authors: A. Bianchini, Guido Flamini, Antoinefrancois Bernardini, Pierre Tomi, I. Morelli, P.-l. Cioni, M. Usai, Mario MarchettiAbstract:The essential oils obtained by water distillation from the aerial parts of two Helichrysum italicum ssp. growing in Corsica (France), Tuscany and Sardinia (Italy) were analysed by GC–RI and GC–MS. The essential oils prepared from Corsican and Tuscan Helichrysum italicum subsp. italicum exhibited two different compositions. Corsican oils were characterized by the pre-eminence of oxygenated compounds: neryl acetate (major compound), neryl propionate, Nerol, acyclic ketones and β-diketones. Conversely, Tuscan oils were found to exhibit higher contents of hydrocarbons (α-pinene, β-caryophyllene, α- and β-selinenes). The comparison of essential oils hydrodistilled from Corsican and Sardinian Helichrysum italicum subsp. microphyllum showed almost similar chemical compositions. The main constituents were: neryl acetate, Nerol, neryl propionate, linalool, eudesm-5-en-11-ol and γ-curcumene. Copyright © 2003 John Wiley & Sons, Ltd.
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A comparative study of volatile constituents of two Helichrysum italicum (Roth) Guss. Don Fil subspecies growing in Corsica (France), Tuscany and Sardinia (Italy)
Flavour and Fragrance Journal, 2003Co-Authors: A. Bianchini, Guido Flamini, Pierre Tomi, A.f. Bernardini, I. Morelli, P.-l. Cioni, M. Usai, Mario MarchettiAbstract:The essential oils obtained by water distillation from the aerial parts of two Helichrysum italicum ssp. growing in Corsica (France). Tuscany and Sardinia (Ita1y) were analysed by GC-RI and GC-MS. The essential oils prepared from Corsican and Tuscan Helichrysum italicum subsp. italicum exhibited two different compositions. Corsican oils were characterized by the pre-eminence of oxygenated compounds: neryl acetate (major compound), neryl propionate, Nerol, acyclic ketones and -diketones. Conversely, Tuscan oils were found to exhibit higher contents of hydrocarbons (-pinene, -caryophyllene, - and -selinenes). The comparison of essential oils hydrodistiIled from Corsican and Sardinian Helichrysum italicum subsp. microphyllum showed almost similar chemical compositions. The main constituents were: neryl acetate, Nerol, neryl propionate, linalool, eudesm-5-en-11-ol and -curcumene.
A.f. Bernardini - One of the best experts on this subject based on the ideXlab platform.
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Chemical composition and variation of the essential oils of wild Sardinian Helichrysum italicum G. Don subps. microphyllum (Wild) Nym from vegetative period to post blooming time.
Journal of Essential Oil Research, 2010Co-Authors: M. Usai, A.f. Bernardini, M. Foddai, A. Muselli, J. Costa, Mario MarchettiAbstract:The essential oils obtained by water distillation from the aerial parts of Helichrysum italicum g. Don subsp. Microphyllum (Willd.) Nym. were analyzed by GC and GC/MS. Three different populations growing at different elevations and under different weather conditions were studied from their vegetative period to post-blooming time. Forty-eight constituents accounting for between 96.5% and 83.0% of total oils have been identified and quantified. Among the identified constituents those present in the highest percentage were neryl acetate (17.6-35.6%), Nerol (3.7-14.4%) and eudesmen-5-en-11-ol (6.4-23.5%). Among them, the neryl acetal percentage decreased when 5-eudesmen-11-ol percentage increased, and limonene reached 7% relative composition. The main fraction of the oil consisted of oxygenated compounds present in higher concentrations in June.
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Analysis of the essential oil from roots of Eupatorium cannabinum subsp.corsicum (L) by GC, GC-MS and 13C-NMR
Phytochemical Analysis, 2007Co-Authors: J. Paolini, J. Costa, A.f. BernardiniAbstract:Eupatorium cannabinum subsp. corsicum (L.) is an endemic subspecies from the island of Corsica. The essential oil from the roots of this aromatic plant has been studied by GC, GC-MS and by 13C-NMR. In contrast to the essential oil from the aerial parts, which is dominated by hydrocarbon compounds (76.9%) and particularly by sesquiterpene components (43.3%), the essential oil from the roots was characterized by a high content of oxygenated compounds (61.0%), particularly oxygenated monoterpenes (54.0%). In the root oil, 106 components were identified representing 96.1% of the total amount. This oil was dominated by the monoterpenes esters (33%), the major components of which were neryl isobutyrate (17.6%), thymyl methyl oxide (15.1 %), -2-carene (14.5%) and -pinene (5.7%). Aromatic esters, Nerol derivatives (esters and diesters) and a benzofuran were investigated by GC-MS using different ionization modes including electron impact ionization, and positive- and negative-chemical ionization. These components have not previously been reported in the essential oil of aerial parts of E. cannabinum from Corsica.
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A comparative study of volatile constituents of two Helichrysum italicum (Roth) Guss. Don Fil subspecies growing in Corsica (France), Tuscany and Sardinia (Italy)
Flavour and Fragrance Journal, 2003Co-Authors: A. Bianchini, Guido Flamini, Pierre Tomi, A.f. Bernardini, I. Morelli, P.-l. Cioni, M. Usai, Mario MarchettiAbstract:The essential oils obtained by water distillation from the aerial parts of two Helichrysum italicum ssp. growing in Corsica (France). Tuscany and Sardinia (Ita1y) were analysed by GC-RI and GC-MS. The essential oils prepared from Corsican and Tuscan Helichrysum italicum subsp. italicum exhibited two different compositions. Corsican oils were characterized by the pre-eminence of oxygenated compounds: neryl acetate (major compound), neryl propionate, Nerol, acyclic ketones and -diketones. Conversely, Tuscan oils were found to exhibit higher contents of hydrocarbons (-pinene, -caryophyllene, - and -selinenes). The comparison of essential oils hydrodistiIled from Corsican and Sardinian Helichrysum italicum subsp. microphyllum showed almost similar chemical compositions. The main constituents were: neryl acetate, Nerol, neryl propionate, linalool, eudesm-5-en-11-ol and -curcumene.
Andrea Buettner - One of the best experts on this subject based on the ideXlab platform.
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structure odor relationship study on geraniol Nerol and their synthesized oxygenated derivatives
Journal of Agricultural and Food Chemistry, 2016Co-Authors: Shaimaa Awadain Elsharif, Andrea BuettnerAbstract:Despite being isomers having the same citrus-like, floral odor, geraniol, 1, and Nerol, 3, show different odor thresholds. To date, no systematic studies are at hand elucidating the structural features required for their specific odor properties. Therefore, starting from these two basic structures and their corresponding esters, namely, geranyl acetate, 2, and neryl acetate, 4, a total of 12 oxygenated compounds were synthesized and characterized regarding retention indices (RI), mass spectrometric (MS), and nuclear magnetic resonance (NMR) data. All compounds were individually tested for their odor qualities and odor thresholds in air (OT). Geraniol, the Z-isomer, with an OT of 14 ng/L, was found to be more potent than its E-isomer, Nerol, which has an OT of 60 ng/L. However, 8-oxoneryl acetate was the most potent derivative within this study, exhibiting an OT of 8.8 ng/L, whereas 8-oxoNerol was the least potent with an OT of 493 ng/L. Interestingly, the 8-oxo derivatives smell musty and fatty, whereas t...
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Structure–Odor Relationship Study on Geraniol, Nerol, and Their Synthesized Oxygenated Derivatives
Journal of Agricultural and Food Chemistry, 2016Co-Authors: Shaimaa Awadain Elsharif, Andrea BuettnerAbstract:Despite being isomers having the same citrus-like, floral odor, geraniol, 1, and Nerol, 3, show different odor thresholds. To date, no systematic studies are at hand elucidating the structural features required for their specific odor properties. Therefore, starting from these two basic structures and their corresponding esters, namely, geranyl acetate, 2, and neryl acetate, 4, a total of 12 oxygenated compounds were synthesized and characterized regarding retention indices (RI), mass spectrometric (MS), and nuclear magnetic resonance (NMR) data. All compounds were individually tested for their odor qualities and odor thresholds in air (OT). Geraniol, the Z-isomer, with an OT of 14 ng/L, was found to be more potent than its E-isomer, Nerol, which has an OT of 60 ng/L. However, 8-oxoneryl acetate was the most potent derivative within this study, exhibiting an OT of 8.8 ng/L, whereas 8-oxoNerol was the least potent with an OT of 493 ng/L. Interestingly, the 8-oxo derivatives smell musty and fatty, whereas t...
A. Bianchini - One of the best experts on this subject based on the ideXlab platform.
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a comparative study of volatile constituents of two helichrysum italicum roth guss don fil subspecies growing in corsica france tuscany and sardinia italy
Flavour and Fragrance Journal, 2003Co-Authors: A. Bianchini, Guido Flamini, Antoinefrancois Bernardini, Pierre Tomi, I. Morelli, P.-l. Cioni, M. Usai, Mario MarchettiAbstract:The essential oils obtained by water distillation from the aerial parts of two Helichrysum italicum ssp. growing in Corsica (France), Tuscany and Sardinia (Italy) were analysed by GC–RI and GC–MS. The essential oils prepared from Corsican and Tuscan Helichrysum italicum subsp. italicum exhibited two different compositions. Corsican oils were characterized by the pre-eminence of oxygenated compounds: neryl acetate (major compound), neryl propionate, Nerol, acyclic ketones and β-diketones. Conversely, Tuscan oils were found to exhibit higher contents of hydrocarbons (α-pinene, β-caryophyllene, α- and β-selinenes). The comparison of essential oils hydrodistilled from Corsican and Sardinian Helichrysum italicum subsp. microphyllum showed almost similar chemical compositions. The main constituents were: neryl acetate, Nerol, neryl propionate, linalool, eudesm-5-en-11-ol and γ-curcumene. Copyright © 2003 John Wiley & Sons, Ltd.
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A comparative study of volatile constituents of two Helichrysum italicum (Roth) Guss. Don Fil subspecies growing in Corsica (France), Tuscany and Sardinia (Italy)
Flavour and Fragrance Journal, 2003Co-Authors: A. Bianchini, Guido Flamini, Pierre Tomi, A.f. Bernardini, I. Morelli, P.-l. Cioni, M. Usai, Mario MarchettiAbstract:The essential oils obtained by water distillation from the aerial parts of two Helichrysum italicum ssp. growing in Corsica (France). Tuscany and Sardinia (Ita1y) were analysed by GC-RI and GC-MS. The essential oils prepared from Corsican and Tuscan Helichrysum italicum subsp. italicum exhibited two different compositions. Corsican oils were characterized by the pre-eminence of oxygenated compounds: neryl acetate (major compound), neryl propionate, Nerol, acyclic ketones and -diketones. Conversely, Tuscan oils were found to exhibit higher contents of hydrocarbons (-pinene, -caryophyllene, - and -selinenes). The comparison of essential oils hydrodistiIled from Corsican and Sardinian Helichrysum italicum subsp. microphyllum showed almost similar chemical compositions. The main constituents were: neryl acetate, Nerol, neryl propionate, linalool, eudesm-5-en-11-ol and -curcumene.