Les Inscriptions à la Bibliothèque sont ouvertes en
ligne via le site: https://biblio.enp.edu.dz
Les Réinscriptions se font à :
• La Bibliothèque Annexe pour les étudiants en
2ème Année CPST
• La Bibliothèque Centrale pour les étudiants en Spécialités
A partir de cette page vous pouvez :
| Retourner au premier écran avec les recherches... |
The journal of essential oil research |
Dépouillements
Ajouter le résultat dans votre panierIdentification of flavonoid content and chemical composition of the essential oils of moroccan herbs / Manuel Viuda-Martos in The journal of essential oil research, Vol. 23 N° 2 (Mars/Avril 2011)
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 1-9
Titre : Identification of flavonoid content and chemical composition of the essential oils of moroccan herbs : Myrtle (myrtus communis L.), rockrose (cistus ladanifer L.) and montpellier cistus (cistus monspeliensis L.) Type de document : texte imprimé Auteurs : Manuel Viuda-Martos, Auteur ; Esther Sendra, Auteur ; José A. Pérez-Alvarez, Auteur Année de publication : 2011 Article en page(s) : pp. 1-9 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Essential oils Flavonoids Cistus Myrtus GC/MS HPLC α-pinene 1,8-cineole Viridiflorol Index. décimale : 646 Résumé : The aim of this work was to determine the polyphenol content and chemical composition of the essential oils of some Moroccan herbs: myrtle (Myrtus communis L.), rockrose (Cistus ladanifer L.) and montpellier cistus (Cistus monspeliensis L.). The polyphenols were analyzed and identified by HPLC and the essential oils were chemically analyzed and identified by GC/MS. The principal components of myrtle leaves essential oil were 1,8-cineole (40.37%) and α-pinene (21.82%). Major oil components of myrtle berry essential oil included 1,8-cineole (46.48%) and α-pinene (24.52%). The essential oil of rockrose was characterized by a high content of 1,8-cineole (19.27%) and viridiflorol (16.38%), while the predominant compounds in montpellier cistus essential oil were 1,8-cineole (9.17%), bornyl acetate (9.14%) and α-pinene (5.84%). Myrtle berry contains small amounts of myricetin derivates (myricetin-3-O-galactoside and myricetin-3-O-rhamnoside), although anthocyanins (malvidin-3-O-glucoside, petunidin-3-O-glucoside) are present in large amounts. In Cistus ladanifer and Cistus monspeliensis the predominant flavonoids were 3,7′-di-O-methyl-kaempferol and 3-O-methyl-kaempferol. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700439 [article] Identification of flavonoid content and chemical composition of the essential oils of moroccan herbs : Myrtle (myrtus communis L.), rockrose (cistus ladanifer L.) and montpellier cistus (cistus monspeliensis L.) [texte imprimé] / Manuel Viuda-Martos, Auteur ; Esther Sendra, Auteur ; José A. Pérez-Alvarez, Auteur . - 2011 . - pp. 1-9.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 1-9
Mots-clés : Essential oils Flavonoids Cistus Myrtus GC/MS HPLC α-pinene 1,8-cineole Viridiflorol Index. décimale : 646 Résumé : The aim of this work was to determine the polyphenol content and chemical composition of the essential oils of some Moroccan herbs: myrtle (Myrtus communis L.), rockrose (Cistus ladanifer L.) and montpellier cistus (Cistus monspeliensis L.). The polyphenols were analyzed and identified by HPLC and the essential oils were chemically analyzed and identified by GC/MS. The principal components of myrtle leaves essential oil were 1,8-cineole (40.37%) and α-pinene (21.82%). Major oil components of myrtle berry essential oil included 1,8-cineole (46.48%) and α-pinene (24.52%). The essential oil of rockrose was characterized by a high content of 1,8-cineole (19.27%) and viridiflorol (16.38%), while the predominant compounds in montpellier cistus essential oil were 1,8-cineole (9.17%), bornyl acetate (9.14%) and α-pinene (5.84%). Myrtle berry contains small amounts of myricetin derivates (myricetin-3-O-galactoside and myricetin-3-O-rhamnoside), although anthocyanins (malvidin-3-O-glucoside, petunidin-3-O-glucoside) are present in large amounts. In Cistus ladanifer and Cistus monspeliensis the predominant flavonoids were 3,7′-di-O-methyl-kaempferol and 3-O-methyl-kaempferol. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700439
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 10-14
Titre : Chemical composition and antioxidant activity of myrtus communis L. floral buds essential oil Type de document : texte imprimé Auteurs : Snoussi, Ahmed, Auteur ; Chaabouni, Mohamed Moncef, Auteur ; Nabiha Bouzouita, Auteur Année de publication : 2011 Article en page(s) : pp. 10-14 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Floral buds essential oil Myrtus communis L. Chemical composition Antioxidant activity α-pinene 1,8-cineole Index. décimale : 646 Résumé : The essential oil of Mytrus communis L. floral buds from Tunisia was analyzed by GC and GC/MS. Thirty-seven compounds were identified, representing 98.7% of the total oil. The major constituents were described as α-pinene (48.9%) and 1,8-cineole (15.3%). The antioxidant activity of the obtained essential oil was investigated by means of β-carotene bleaching (BCB) test and free radical scavenging assay using 2,2-diphenyl-1-picrylhydrazyl radical (DPPH). Results showed that Myrtus communis L. floral buds essential oil has a significant antioxidant effect when tested by each method respectively. The strong antioxidant activity of the studied oil can be attributed to the high content in hydrocarbon monoterpenes and oxygenated monoterpenes. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700440 [article] Chemical composition and antioxidant activity of myrtus communis L. floral buds essential oil [texte imprimé] / Snoussi, Ahmed, Auteur ; Chaabouni, Mohamed Moncef, Auteur ; Nabiha Bouzouita, Auteur . - 2011 . - pp. 10-14.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 10-14
Mots-clés : Floral buds essential oil Myrtus communis L. Chemical composition Antioxidant activity α-pinene 1,8-cineole Index. décimale : 646 Résumé : The essential oil of Mytrus communis L. floral buds from Tunisia was analyzed by GC and GC/MS. Thirty-seven compounds were identified, representing 98.7% of the total oil. The major constituents were described as α-pinene (48.9%) and 1,8-cineole (15.3%). The antioxidant activity of the obtained essential oil was investigated by means of β-carotene bleaching (BCB) test and free radical scavenging assay using 2,2-diphenyl-1-picrylhydrazyl radical (DPPH). Results showed that Myrtus communis L. floral buds essential oil has a significant antioxidant effect when tested by each method respectively. The strong antioxidant activity of the studied oil can be attributed to the high content in hydrocarbon monoterpenes and oxygenated monoterpenes. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700440
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 15-19
Titre : Volatile constituents of pinus pinea L. needles Type de document : texte imprimé Auteurs : Nizar Nasri, Auteur ; Nizar Tlili, Auteur ; Saïda Triki, Auteur Année de publication : 2011 Article en page(s) : pp. 15-19 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Pinus pinea Pinaceae Essential oil composition Limonene Chemical variability Index. décimale : 646 Résumé : The composition of the essential oil hydro-distilled from needles of Pinus pinea L. trees, collected from six populations coming from Northern Tunisia was determined by GC and GC/MS analysis. Fifty-seven components, accounting for 94.4–99.9% of the oil were identified. As expected, the majority of the identified metabolites were found to be monoterpenes and sesquiterpenes. Monoterpenes account about 76% with 34 of 57 compounds identified. The principal component was limonene (35.9%) followed by α-pinene (6.4%). Sesquiterpenes (ca.19%) were mainly β-cubebene (1.8%), β-caryophyllene (1.7%), α humulene (1.7%) and β-farnesene (1.7%). Diterpenes (1.4%) were present in few concentrations mainly at one population. Data projection on axes of principal component analysis from P. pinea samples showed significant geographic polymorphism between Tunisian populations. This suggests that, using an appropriate wide-range sample of P. pinea populations, terpenes could be used to study the genetic diversity of P. pinea. This species has never shown a noticeable genetic variability using microsatellites, fatty acids or allozymes. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700441 [article] Volatile constituents of pinus pinea L. needles [texte imprimé] / Nizar Nasri, Auteur ; Nizar Tlili, Auteur ; Saïda Triki, Auteur . - 2011 . - pp. 15-19.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 15-19
Mots-clés : Pinus pinea Pinaceae Essential oil composition Limonene Chemical variability Index. décimale : 646 Résumé : The composition of the essential oil hydro-distilled from needles of Pinus pinea L. trees, collected from six populations coming from Northern Tunisia was determined by GC and GC/MS analysis. Fifty-seven components, accounting for 94.4–99.9% of the oil were identified. As expected, the majority of the identified metabolites were found to be monoterpenes and sesquiterpenes. Monoterpenes account about 76% with 34 of 57 compounds identified. The principal component was limonene (35.9%) followed by α-pinene (6.4%). Sesquiterpenes (ca.19%) were mainly β-cubebene (1.8%), β-caryophyllene (1.7%), α humulene (1.7%) and β-farnesene (1.7%). Diterpenes (1.4%) were present in few concentrations mainly at one population. Data projection on axes of principal component analysis from P. pinea samples showed significant geographic polymorphism between Tunisian populations. This suggests that, using an appropriate wide-range sample of P. pinea populations, terpenes could be used to study the genetic diversity of P. pinea. This species has never shown a noticeable genetic variability using microsatellites, fatty acids or allozymes. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700441
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 20-23
Titre : Isolation and identification of cis-7- hydroxycalamenene from the essential oil of croton cajucara benth. Type de document : texte imprimé Auteurs : Aline Q. Pereira, Auteur ; Francisco C. M. Chaves, Auteur ; Shaft C. Pinto, Auteur Année de publication : 2011 Article en page(s) : pp. 20-23 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Croton cajucara Euphorbiaceae Essential oil composition Cis-7-hydroxycalamenene Linalool Linear retention indices Index. décimale : 646 Résumé : During agronomical and chemical studies with Croton cajucara Benth. (Euphorbiaceae), a shrub native to the Amazon area possessing an essential oil rich in linalool, it was observed that some individuals of a germplasm bank produced an oil containing a hydroxylated sesquiterpene as major component (up to 44.3%). Originally misidentified as 5-hydroxycalamenene, the compound was further isolated and properly identified by 1H and 13C NMR as cis-7-hydroxycalamenene. Measured retention indices were 1759 (Ultra-1), 1804 (HP-5), 2212 (FFAP) and 2663 (Carbowax 20M). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700442 [article] Isolation and identification of cis-7- hydroxycalamenene from the essential oil of croton cajucara benth. [texte imprimé] / Aline Q. Pereira, Auteur ; Francisco C. M. Chaves, Auteur ; Shaft C. Pinto, Auteur . - 2011 . - pp. 20-23.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 20-23
Mots-clés : Croton cajucara Euphorbiaceae Essential oil composition Cis-7-hydroxycalamenene Linalool Linear retention indices Index. décimale : 646 Résumé : During agronomical and chemical studies with Croton cajucara Benth. (Euphorbiaceae), a shrub native to the Amazon area possessing an essential oil rich in linalool, it was observed that some individuals of a germplasm bank produced an oil containing a hydroxylated sesquiterpene as major component (up to 44.3%). Originally misidentified as 5-hydroxycalamenene, the compound was further isolated and properly identified by 1H and 13C NMR as cis-7-hydroxycalamenene. Measured retention indices were 1759 (Ultra-1), 1804 (HP-5), 2212 (FFAP) and 2663 (Carbowax 20M). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700442
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 24-28
Titre : Synergism of gentamicin and norfloxacin with the volatile compounds of lippia microphylla Cham. (verbenaceae) Type de document : texte imprimé Auteurs : Henrique D.M. Coutinho, Auteur ; Fabiola F. G. Rodrigues, Auteur ; Eidla M. M. Nascimento, Auteur Année de publication : 2011 Article en page(s) : pp. 24-28 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Lippia microphylla Gaseous contact Minimal inhibitory dose Staphylococcus aureus Pseudomonas aeruginosa Index. décimale : 646 Résumé : This is the first report of antibiotic modifying activity by the volatile compounds from essential oils of Lippia microphylla Cham. (Verbenaceae). The leaves of Lippia microphylla Cham. (Verbenaceae) were extracted by hydrodistillation, and the essential oil obtained was examined with respect to its effects on the antibiotic activity of gentamicin, tetracycline and norfloxacin by minimal inhibitory dose method and gaseous contact. The gaseous component of the oil inhibited the bacterial growth of the strains of Staphylococcus aureus with a MID of 0.5 mg/L air. The activity of gentamicin against Pseudomonas aerugionosa and norfloxacin against Staphylococcus aureus 1199B was increased by 47% and 225%, whereas no effect or an increased resistance to tetracycline was observed with an inhibition zone 14.3% smaller after contact with the gaseous component of the essential oil. These results show that the volatile compounds of this oil can enhance antibiotic activity, which may lead to the development of an adjuvant in the antibiotic therapy of multidrug resistant pathogens (MDR) such as the respiratory tract bacterial pathogens. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700443 [article] Synergism of gentamicin and norfloxacin with the volatile compounds of lippia microphylla Cham. (verbenaceae) [texte imprimé] / Henrique D.M. Coutinho, Auteur ; Fabiola F. G. Rodrigues, Auteur ; Eidla M. M. Nascimento, Auteur . - 2011 . - pp. 24-28.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 24-28
Mots-clés : Lippia microphylla Gaseous contact Minimal inhibitory dose Staphylococcus aureus Pseudomonas aeruginosa Index. décimale : 646 Résumé : This is the first report of antibiotic modifying activity by the volatile compounds from essential oils of Lippia microphylla Cham. (Verbenaceae). The leaves of Lippia microphylla Cham. (Verbenaceae) were extracted by hydrodistillation, and the essential oil obtained was examined with respect to its effects on the antibiotic activity of gentamicin, tetracycline and norfloxacin by minimal inhibitory dose method and gaseous contact. The gaseous component of the oil inhibited the bacterial growth of the strains of Staphylococcus aureus with a MID of 0.5 mg/L air. The activity of gentamicin against Pseudomonas aerugionosa and norfloxacin against Staphylococcus aureus 1199B was increased by 47% and 225%, whereas no effect or an increased resistance to tetracycline was observed with an inhibition zone 14.3% smaller after contact with the gaseous component of the essential oil. These results show that the volatile compounds of this oil can enhance antibiotic activity, which may lead to the development of an adjuvant in the antibiotic therapy of multidrug resistant pathogens (MDR) such as the respiratory tract bacterial pathogens. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700443
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 29-33
Titre : Variability in volatile terpenoid compositions of peppermint cultivars and some wild accession from northern India Type de document : texte imprimé Auteurs : Rajendra C. Padalia, Auteur ; Ram S. Verma, Auteur ; Chandan S. Chanotiya, Auteur Année de publication : 2011 Article en page(s) : pp. 29-33 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Peppermint Mentha piperita L. Essential oils Menthol Menthone menthofuran Index. décimale : 646 Résumé : The terpenoid composition of different cultivars of peppermint (Mentha piperita L.) grown in Uttarakhand (India) and accessions collected from wild were analyzed by capillary GC and GC/MS. The major characteristic constituents of all the cultivars and wild accessions were menthol (30.3–47.8%), menthone (4.5–48.6%), menthyl acetate (1.0–9.5%), menthofuran (0.1–14.6%), 1,8-cineole (4.1–8.9%), neo-menthol (1.5–4.9%) and iso-menthone (1.2–3.9%). Although the major characteristic constituents were the same in all oils, there were considerable variations in their quantitative makeup. The contents of menthol and menthofuran were found relatively higher in all cultivars grown in foothills compared to mid-hills. Interestingly, menthofuran, a characteristic compound of the peppermint oil, was detected either at trace level or as a minor component in all the three wild accessions collected from mid-hills. Quality evaluation of peppermint oils revealed that the performance of cultivars grown at foothill conditions are very close to the requirements of European pharmacopoeia as compared to mid-hills. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700444 [article] Variability in volatile terpenoid compositions of peppermint cultivars and some wild accession from northern India [texte imprimé] / Rajendra C. Padalia, Auteur ; Ram S. Verma, Auteur ; Chandan S. Chanotiya, Auteur . - 2011 . - pp. 29-33.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 29-33
Mots-clés : Peppermint Mentha piperita L. Essential oils Menthol Menthone menthofuran Index. décimale : 646 Résumé : The terpenoid composition of different cultivars of peppermint (Mentha piperita L.) grown in Uttarakhand (India) and accessions collected from wild were analyzed by capillary GC and GC/MS. The major characteristic constituents of all the cultivars and wild accessions were menthol (30.3–47.8%), menthone (4.5–48.6%), menthyl acetate (1.0–9.5%), menthofuran (0.1–14.6%), 1,8-cineole (4.1–8.9%), neo-menthol (1.5–4.9%) and iso-menthone (1.2–3.9%). Although the major characteristic constituents were the same in all oils, there were considerable variations in their quantitative makeup. The contents of menthol and menthofuran were found relatively higher in all cultivars grown in foothills compared to mid-hills. Interestingly, menthofuran, a characteristic compound of the peppermint oil, was detected either at trace level or as a minor component in all the three wild accessions collected from mid-hills. Quality evaluation of peppermint oils revealed that the performance of cultivars grown at foothill conditions are very close to the requirements of European pharmacopoeia as compared to mid-hills. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700444
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 34-44
Titre : Characterization of volatile compounds and aroma profiles of malaysian pomelo (citrus grandis (L.) osbeck) blossom and peel Type de document : texte imprimé Auteurs : Mun-Wai Cheong, Auteur ; Xiu-Qing Loke, Auteur ; Shao-Quan Liu, Auteur Année de publication : 2011 Article en page(s) : pp. 34-44 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Pomelo Blossom Peel HS-SPME Sensory evaluation Index. décimale : 646 Résumé : The knowledge of the chemical compositions and sensory profiles of their peels and blossoms could lead to better understanding of two cultivars of Malaysian pomelo. This work was to determine the volatile compositions of Malaysian pomelo blossoms and peels through HS-SPME-GC/MS analysis and principal component analysis (PCA) approach as well as to identify their key aroma profiles by sensory evaluation. Pink and white pomelo blossoms contained similar volatiles, which mainly consisted of limonene, cis-β-ocimene, α-terpinene, linalool, methyl anthranilate, and indole. Their primary difference was in the concentration ratio between limonene and linalool. Major volatiles in pomelo peels were terpene hydrocarbons. Pink pomelo peel contained higher levels of aldehydes (e.g. octanal, decanal and citral), while some trace-level important compounds (e.g. β-sinensal, α-sinensal and nootkatone) were found only in white pomelo peel. Through sensory evaluation, both intact pomelo blossoms had similar aroma profiles, which comprised the dominant note of floral, followed by animalic and citrus blossom. Additionally, pink pomelo peel extract was much more impactful than white pomelo peel extract, especially in grapefruit and green notes. Through HS-SPME-GC/MS and PCA, the authors managed to discover the similarities and differences between two Malaysian pomelo cultivars. Further, the sensory data on intact pomelo blossoms and pomelo peel extracts provided more insight. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700445 [article] Characterization of volatile compounds and aroma profiles of malaysian pomelo (citrus grandis (L.) osbeck) blossom and peel [texte imprimé] / Mun-Wai Cheong, Auteur ; Xiu-Qing Loke, Auteur ; Shao-Quan Liu, Auteur . - 2011 . - pp. 34-44.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 34-44
Mots-clés : Pomelo Blossom Peel HS-SPME Sensory evaluation Index. décimale : 646 Résumé : The knowledge of the chemical compositions and sensory profiles of their peels and blossoms could lead to better understanding of two cultivars of Malaysian pomelo. This work was to determine the volatile compositions of Malaysian pomelo blossoms and peels through HS-SPME-GC/MS analysis and principal component analysis (PCA) approach as well as to identify their key aroma profiles by sensory evaluation. Pink and white pomelo blossoms contained similar volatiles, which mainly consisted of limonene, cis-β-ocimene, α-terpinene, linalool, methyl anthranilate, and indole. Their primary difference was in the concentration ratio between limonene and linalool. Major volatiles in pomelo peels were terpene hydrocarbons. Pink pomelo peel contained higher levels of aldehydes (e.g. octanal, decanal and citral), while some trace-level important compounds (e.g. β-sinensal, α-sinensal and nootkatone) were found only in white pomelo peel. Through sensory evaluation, both intact pomelo blossoms had similar aroma profiles, which comprised the dominant note of floral, followed by animalic and citrus blossom. Additionally, pink pomelo peel extract was much more impactful than white pomelo peel extract, especially in grapefruit and green notes. Through HS-SPME-GC/MS and PCA, the authors managed to discover the similarities and differences between two Malaysian pomelo cultivars. Further, the sensory data on intact pomelo blossoms and pomelo peel extracts provided more insight. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700445
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 45-59
Titre : Characterization of oils from the fruits, leaves and flowers of the bitter orange tree Type de document : texte imprimé Auteurs : Giovanni Dugo, Auteur ; Ivana Bonaccorsi, Auteur ; Danilo Sciarrone, Auteur Année de publication : 2011 Article en page(s) : pp. 45-59 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Citrus aurantium L. Essential oil Neroli Petitgrain Composition Enantiomeric distribution Oxygen heterocyclic compounds GC GC/MS-LRI Chiral GC RP-HPLC Index. décimale : 646 Résumé : The bitter orange tree is used to obtain different products: essential oil cold pressed from the peel of the fruit, the neroli distilled from the flowers, the petitgrain distilled from the leaves and twigs, and different other products obtained by solvent extraction or by hydrodistillation. All these products are much appreciated for their odor properties. Their analytical characterization is important for the Identification of quality parameters, and considering their commercial value, it is important to determine their composition. This study is meant to determine differences between Italian and Egyptian cold-pressed, neroli and petitgrain oils, and gives useful information on the composition of the essential oil obtained from the whole crushed fruits. The composition of all the samples was studied by different analytical techniques to determine the volatile fraction, the enantiomeric distribution of some volatiles (by GC, GC/MS and esGC, respectively) and the oxygen heterocyclic fraction by RP-HPLC. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700446 [article] Characterization of oils from the fruits, leaves and flowers of the bitter orange tree [texte imprimé] / Giovanni Dugo, Auteur ; Ivana Bonaccorsi, Auteur ; Danilo Sciarrone, Auteur . - 2011 . - pp. 45-59.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 45-59
Mots-clés : Citrus aurantium L. Essential oil Neroli Petitgrain Composition Enantiomeric distribution Oxygen heterocyclic compounds GC GC/MS-LRI Chiral GC RP-HPLC Index. décimale : 646 Résumé : The bitter orange tree is used to obtain different products: essential oil cold pressed from the peel of the fruit, the neroli distilled from the flowers, the petitgrain distilled from the leaves and twigs, and different other products obtained by solvent extraction or by hydrodistillation. All these products are much appreciated for their odor properties. Their analytical characterization is important for the Identification of quality parameters, and considering their commercial value, it is important to determine their composition. This study is meant to determine differences between Italian and Egyptian cold-pressed, neroli and petitgrain oils, and gives useful information on the composition of the essential oil obtained from the whole crushed fruits. The composition of all the samples was studied by different analytical techniques to determine the volatile fraction, the enantiomeric distribution of some volatiles (by GC, GC/MS and esGC, respectively) and the oxygen heterocyclic fraction by RP-HPLC. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700446
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 60-71
Titre : Authentication of bergamot essential oil by gas chromatography-combustion-isotope ratio mass spectrometer (GC-C-IRMS) Type de document : texte imprimé Auteurs : Luisa Schipilliti, Auteur ; Giovanni Dugo, Auteur ; Luca Santi, Auteur Année de publication : 2011 Article en page(s) : pp. 60-71 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : GC-C-IRMS Bergamot essential oil Citrus bergamia Risso Quality assessment Stable isotope ratio analysis Linalool Linalyl acetate Adulteration Index. décimale : 646 Résumé : The quality assessment of bergamot essential oils was established employing the gas chromatography-combustion- isotope ratio mass spectrometer (GC-C-IRMS) technique. An authenticity range was obtained investigating the carbon stable isotope ratio of genuine Italian bergamot essential oils (harvest period 2008–2009), in order to compare the GC-C-IRMS data of several industrial, commercial and foreign bergamot essential oil samples. Moreover, with the aim to test the efficiency and the sensibility of IRMS device, self-adulterated in laboratory bergamot oil samples were analyzed. The data were compared with those achieved by conventional enantioselective gas chromatography (Es-GC) and high resolution gas chromatography (GC-FID). Results of this work indicated that GC-C-IRMS was able not only to detect the presence of adulterants in the samples, but also to discriminate the bergamot oil samples according to their geographic provenance and the nature of the adulterants added. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700447 [article] Authentication of bergamot essential oil by gas chromatography-combustion-isotope ratio mass spectrometer (GC-C-IRMS) [texte imprimé] / Luisa Schipilliti, Auteur ; Giovanni Dugo, Auteur ; Luca Santi, Auteur . - 2011 . - pp. 60-71.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 60-71
Mots-clés : GC-C-IRMS Bergamot essential oil Citrus bergamia Risso Quality assessment Stable isotope ratio analysis Linalool Linalyl acetate Adulteration Index. décimale : 646 Résumé : The quality assessment of bergamot essential oils was established employing the gas chromatography-combustion- isotope ratio mass spectrometer (GC-C-IRMS) technique. An authenticity range was obtained investigating the carbon stable isotope ratio of genuine Italian bergamot essential oils (harvest period 2008–2009), in order to compare the GC-C-IRMS data of several industrial, commercial and foreign bergamot essential oil samples. Moreover, with the aim to test the efficiency and the sensibility of IRMS device, self-adulterated in laboratory bergamot oil samples were analyzed. The data were compared with those achieved by conventional enantioselective gas chromatography (Es-GC) and high resolution gas chromatography (GC-FID). Results of this work indicated that GC-C-IRMS was able not only to detect the presence of adulterants in the samples, but also to discriminate the bergamot oil samples according to their geographic provenance and the nature of the adulterants added. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700447
Exemplaires
| Code-barres | Cote | Support | Localisation | Section | Disponibilité |
|---|---|---|---|---|---|
| aucun exemplaire | |||||
