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Ajouter le résultat dans votre panierChemical composition of the aliphatic compounds rich essential oil of hypericum japonicum Thunb. ex Murray from India / Ram S. Verma in The journal of essential oil research, Vol. 24 N° 6 (Décembre 2012)
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 501-505
Titre : Chemical composition of the aliphatic compounds rich essential oil of hypericum japonicum Thunb. ex Murray from India Type de document : texte imprimé Auteurs : Ram S. Verma, Auteur ; Rajendra C. Padalia, Auteur ; Amit Chauhan, Auteur Année de publication : 2014 Article en page(s) : pp. 501-505 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Hypericum japonicum Hypericaceae Essential oil composition 2-methyl octane n-nonane Résumé : Hydro-distilled essential oil of the aerial parts of Hypericum japonicum Thunb. ex Murray (Hypericaceae), grown in northern India was analyzed by gas chromatography (GC) and gas chromatography–mass spectrometry (GC–MS). A total of seventy constituents representing 93.6% of the total composition have been identified. Major constituents of the essential oil were 2-methyl octane (24.9%), n-nonane (21.4%), (2Z)-nonenol (16.5%), n-decanal (8.2%) and allo-aromadendrene epoxide (3.3%). The characteristic of the H. japonicum essential oil was the presence of higher amount of aliphatic compounds (82.5%) compared with terpenoids. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728082 [article] Chemical composition of the aliphatic compounds rich essential oil of hypericum japonicum Thunb. ex Murray from India [texte imprimé] / Ram S. Verma, Auteur ; Rajendra C. Padalia, Auteur ; Amit Chauhan, Auteur . - 2014 . - pp. 501-505.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 501-505
Mots-clés : Hypericum japonicum Hypericaceae Essential oil composition 2-methyl octane n-nonane Résumé : Hydro-distilled essential oil of the aerial parts of Hypericum japonicum Thunb. ex Murray (Hypericaceae), grown in northern India was analyzed by gas chromatography (GC) and gas chromatography–mass spectrometry (GC–MS). A total of seventy constituents representing 93.6% of the total composition have been identified. Major constituents of the essential oil were 2-methyl octane (24.9%), n-nonane (21.4%), (2Z)-nonenol (16.5%), n-decanal (8.2%) and allo-aromadendrene epoxide (3.3%). The characteristic of the H. japonicum essential oil was the presence of higher amount of aliphatic compounds (82.5%) compared with terpenoids. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728082
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 507-511
Titre : Cinnamomum citriodorum Thw. : new source of citronellol Type de document : texte imprimé Auteurs : N. K. Leela, Auteur ; T. M. Vipin, Auteur ; V. Priyanka, Auteur Année de publication : 2014 Article en page(s) : pp. 507-511 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Cinnamomum citriodorum Essential oil composition Citronellol Citronellal Trans-geraniol Résumé : The essential oil composition of Cinnamomum citriodorum leaves and petioles was determined by gas chromatography (GC) and GC–mass spectrometry (GC–MS) analysis. Leaf and petioles yielded 0.11% and 0.42% essential oil respectively. In leaf oil, twenty-seven constituents representing 97.2% of the oil were identified. Major components of the oil were citronellol (66.5–71.1%), citronellal (10.8–10.9%) and trans-geraniol (5.9–6.5%). In the oil from the petiole, thirty-eight compounds contributing 91.3% of the oil were identified, of which citronellol (36.2–38.3%), citronellal (9.9–15.4%) and α-copaene (8.7–10.3%) were the chief constituents. Although both oils were dominated by monoterpene alcohols, the oil from the petiole contained a higher level of sesquiterpenes (26.3–36.2%) compared with the leaf oil (5.0–9.9%). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728084 [article] Cinnamomum citriodorum Thw. : new source of citronellol [texte imprimé] / N. K. Leela, Auteur ; T. M. Vipin, Auteur ; V. Priyanka, Auteur . - 2014 . - pp. 507-511.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 507-511
Mots-clés : Cinnamomum citriodorum Essential oil composition Citronellol Citronellal Trans-geraniol Résumé : The essential oil composition of Cinnamomum citriodorum leaves and petioles was determined by gas chromatography (GC) and GC–mass spectrometry (GC–MS) analysis. Leaf and petioles yielded 0.11% and 0.42% essential oil respectively. In leaf oil, twenty-seven constituents representing 97.2% of the oil were identified. Major components of the oil were citronellol (66.5–71.1%), citronellal (10.8–10.9%) and trans-geraniol (5.9–6.5%). In the oil from the petiole, thirty-eight compounds contributing 91.3% of the oil were identified, of which citronellol (36.2–38.3%), citronellal (9.9–15.4%) and α-copaene (8.7–10.3%) were the chief constituents. Although both oils were dominated by monoterpene alcohols, the oil from the petiole contained a higher level of sesquiterpenes (26.3–36.2%) compared with the leaf oil (5.0–9.9%). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728084
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 513-521
Titre : Essential oil and aroma composition of leaves, stalks and roots of celery (Apium graveolens var. dulce) from Tunisia Type de document : texte imprimé Auteurs : Ibtissem Hamrouni Sellami, Auteur ; Iness Bettaieb, Auteur ; Soumaya Bourgou, Auteur Année de publication : 2014 Article en page(s) : pp. 513-521 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Apium graveolens var. dulce Apiaceae Celery Essential oil Aroma compounds Phthalides Résumé : Volatiles of leaves, stalks and roots of Tunisian celery (Apium graveolens var. dulce) were extracted either by hydrodistillation or by maceration in organic solvents. After concentration, essential oils and aroma extracts were studied by gas chromatography (GC) and GC–mass spectrometry (GC–MS). A high proportion of essential oils and aroma extracts consisted of phthalides with 74.6–76.6% in leaves, 56.8–74.1% in stalks and 57.7–79.7% in roots. The studied organs were particularly characterized by appreciable levels of terpene hydrocarbons (17.0–31.5%). Also, results showed that stalks were particularly rich in phenols with 8.7% of total volatiles. The main volatile constituents identified in the different extracts were (Z)-3-butylidenephthalide (27.8–38.4% in leaves, 30.5–38.9% in stalks, 30.5–52.0% in roots), 3-butyl-4,5-dihydrophthalide (34.2–41.0% in leaves, 24.1–27.8% in stalks, 12.3–13.2% in roots) and α-thujene (7.9–9.9% in leaves, 7.5–14.0% in stalks, 7.0–12.4% in roots). The three studied organs of A. graveolens (leaves, stalks and roots) could be considered good sources of phthalides known for their anti-inflammatory, anti-tumor and insecticidal properties. Nevertheless, the efficiency in the extraction of these bioactive compounds depends on both the organ and the method used. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728093 [article] Essential oil and aroma composition of leaves, stalks and roots of celery (Apium graveolens var. dulce) from Tunisia [texte imprimé] / Ibtissem Hamrouni Sellami, Auteur ; Iness Bettaieb, Auteur ; Soumaya Bourgou, Auteur . - 2014 . - pp. 513-521.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 513-521
Mots-clés : Apium graveolens var. dulce Apiaceae Celery Essential oil Aroma compounds Phthalides Résumé : Volatiles of leaves, stalks and roots of Tunisian celery (Apium graveolens var. dulce) were extracted either by hydrodistillation or by maceration in organic solvents. After concentration, essential oils and aroma extracts were studied by gas chromatography (GC) and GC–mass spectrometry (GC–MS). A high proportion of essential oils and aroma extracts consisted of phthalides with 74.6–76.6% in leaves, 56.8–74.1% in stalks and 57.7–79.7% in roots. The studied organs were particularly characterized by appreciable levels of terpene hydrocarbons (17.0–31.5%). Also, results showed that stalks were particularly rich in phenols with 8.7% of total volatiles. The main volatile constituents identified in the different extracts were (Z)-3-butylidenephthalide (27.8–38.4% in leaves, 30.5–38.9% in stalks, 30.5–52.0% in roots), 3-butyl-4,5-dihydrophthalide (34.2–41.0% in leaves, 24.1–27.8% in stalks, 12.3–13.2% in roots) and α-thujene (7.9–9.9% in leaves, 7.5–14.0% in stalks, 7.0–12.4% in roots). The three studied organs of A. graveolens (leaves, stalks and roots) could be considered good sources of phthalides known for their anti-inflammatory, anti-tumor and insecticidal properties. Nevertheless, the efficiency in the extraction of these bioactive compounds depends on both the organ and the method used. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728093
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 523-531
Titre : Variability of the essential oil content and composition among the wild populations of Achillea biebersteinii Afan. from Iran : occurrence of new nepetalactones chemotypes Type de document : texte imprimé Auteurs : Seyed Fazel Mirahmadi, Auteur ; Mohammad Reza Hassandokht, Auteur ; Fatemeh Sefidkon, Auteur Année de publication : 2014 Article en page(s) : pp. 523-531 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Achillea biebersteinii Afan. Essential oil 1,8-cineole p-cymene Nepetalactones (E)-chrysanthenyl acetate Camphor Résumé : In this study, the chemical composition of essential oils from twenty-three wild populations of Achillea biebersteinii Afan., growing wild in different parts of Iran, were determined by means of gas chromatography (GC) and GC–mass spectrometry (GC–MS) analyses. Based on the dry weight of samples, the oil content of studied populations varied from 0.44% (Nenor) to 1.62% (Golool) with an average value of 0.81%. In total, twenty-five compounds were identified in the essential oil of all samples corresponding about 92.5–99.1% of the chemical composition. All essential oils were characterized by a high amount of monoterpenoid compounds (99.1–99.2%), especially oxygenated ones (48.5–90%), which were almost dominant in all cases and with a trace amount of sesquiterpenes (0–0.3%). 1,8-Cineole (6.5–68.3%) was generally found as the principal component of most essential oils, followed by p-cymene (1.4–38.6%). The noticeable point of present study was the occurrence of nepetalactones chemotypes in plants of the Nepeta species. These compounds were detected in the essential oils of fourteen of twenty-three populations, which were mostly at least one of the three major components (4.3–43.3%) too. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728094 [article] Variability of the essential oil content and composition among the wild populations of Achillea biebersteinii Afan. from Iran : occurrence of new nepetalactones chemotypes [texte imprimé] / Seyed Fazel Mirahmadi, Auteur ; Mohammad Reza Hassandokht, Auteur ; Fatemeh Sefidkon, Auteur . - 2014 . - pp. 523-531.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 523-531
Mots-clés : Achillea biebersteinii Afan. Essential oil 1,8-cineole p-cymene Nepetalactones (E)-chrysanthenyl acetate Camphor Résumé : In this study, the chemical composition of essential oils from twenty-three wild populations of Achillea biebersteinii Afan., growing wild in different parts of Iran, were determined by means of gas chromatography (GC) and GC–mass spectrometry (GC–MS) analyses. Based on the dry weight of samples, the oil content of studied populations varied from 0.44% (Nenor) to 1.62% (Golool) with an average value of 0.81%. In total, twenty-five compounds were identified in the essential oil of all samples corresponding about 92.5–99.1% of the chemical composition. All essential oils were characterized by a high amount of monoterpenoid compounds (99.1–99.2%), especially oxygenated ones (48.5–90%), which were almost dominant in all cases and with a trace amount of sesquiterpenes (0–0.3%). 1,8-Cineole (6.5–68.3%) was generally found as the principal component of most essential oils, followed by p-cymene (1.4–38.6%). The noticeable point of present study was the occurrence of nepetalactones chemotypes in plants of the Nepeta species. These compounds were detected in the essential oils of fourteen of twenty-three populations, which were mostly at least one of the three major components (4.3–43.3%) too. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728094
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 533-538
Titre : Chemical composition and antimicrobial activity of the essential oil of Curcuma leucorhiza Roxb Type de document : texte imprimé Auteurs : Langoljam R. Devi, Auteur ; Virendra S. Rana, Auteur ; Sarangthem I. Devi, Auteur Année de publication : 2014 Article en page(s) : pp. 533-538 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Curcuma leucorhiza Zingiberaceae Germacrone Curdione Antimicrobial activity Résumé : The essential oils obtained by hydrodistillation from the rhizomes and leaves of Curcuma leucorhiza Roxb. were analyzed by gas chromatography (GC) and GC/mass spectrometry (GC/MS) for the first time. A total of forty-nine compounds were identified in both oils. The main compounds in the rhizome and leaf oils were germacrone (9.6–19.7%), curdione (19.1–19.5%), camphor (7.2–8.1%), 1,8-cineole (4.0–7.4%), curzerene (3.0–5.7%), linalool (5.2–5.4%), neo-curdione (2.8–4.6%) and isoborneol (2.0–3.8%). Screening of the essential oils showed promising antibacterial activity (7–16 mm inhibition zone) against Streptococcus mutans, Pseudomonas putida, Bacillus subtilis, Klebsiella pneumoniae and antifungal activity (9–14 mm inhibition zone) against Aspergillus fumigatus, Aspergillus flavus, Aspergillus niger and Candida albicans at 20 μg/disc of the oil by disc diffusion method as compared with standards. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728089 [article] Chemical composition and antimicrobial activity of the essential oil of Curcuma leucorhiza Roxb [texte imprimé] / Langoljam R. Devi, Auteur ; Virendra S. Rana, Auteur ; Sarangthem I. Devi, Auteur . - 2014 . - pp. 533-538.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 533-538
Mots-clés : Curcuma leucorhiza Zingiberaceae Germacrone Curdione Antimicrobial activity Résumé : The essential oils obtained by hydrodistillation from the rhizomes and leaves of Curcuma leucorhiza Roxb. were analyzed by gas chromatography (GC) and GC/mass spectrometry (GC/MS) for the first time. A total of forty-nine compounds were identified in both oils. The main compounds in the rhizome and leaf oils were germacrone (9.6–19.7%), curdione (19.1–19.5%), camphor (7.2–8.1%), 1,8-cineole (4.0–7.4%), curzerene (3.0–5.7%), linalool (5.2–5.4%), neo-curdione (2.8–4.6%) and isoborneol (2.0–3.8%). Screening of the essential oils showed promising antibacterial activity (7–16 mm inhibition zone) against Streptococcus mutans, Pseudomonas putida, Bacillus subtilis, Klebsiella pneumoniae and antifungal activity (9–14 mm inhibition zone) against Aspergillus fumigatus, Aspergillus flavus, Aspergillus niger and Candida albicans at 20 μg/disc of the oil by disc diffusion method as compared with standards. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728089
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 539-545
Titre : Brassica fruticulosa cyr. and brassica incana ten. (Brassicaceae) as mediterranean traditional wild vegetables : a valuable source of bioactive compounds Type de document : texte imprimé Auteurs : G. Tripodi, Auteur ; A. Verzera, Auteur ; G. Dima, Auteur Année de publication : 2014 Article en page(s) : pp. 539-545 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Brassica fruticulosa Cyr. Brassica incana Ten. Volatile constituents Isothiocyanates SPME–GC–MS Résumé : Two species of Brassicaceae (Crucifer) family, used and appreciated as traditional wild vegetables, including Brassica fruticulosa Cyr. and Brassica incana Ten., were examined as potential source of bioactive volatile compounds. The volatile constituents released by the chopped leaves and roots were extracted and analyzed by solid-phase microextraction–gas chromatography–mass spectrometry (SPME–GC–MS). A large number of volatile constituents were identified: alcohols, aldehydes, esters, acids, ketones, terpenes, C13-norisoprenoides and sulfur compounds. Volatiles included isothiocyanates with a well known anticancer activity – the largest amount resulted in the roots, with 3-butenyl isothiocyanate the most represented in both species; of great interest also the good amount revealed in the leaves of Brassica fruticulosa Cyr. The revaluation of these plants, a vegetable source of high antioxidant power, will be interesting for consumer health by the production of new commercial herbal products and/or dietary supplements of high quality and low cost. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.730492 [article] Brassica fruticulosa cyr. and brassica incana ten. (Brassicaceae) as mediterranean traditional wild vegetables : a valuable source of bioactive compounds [texte imprimé] / G. Tripodi, Auteur ; A. Verzera, Auteur ; G. Dima, Auteur . - 2014 . - pp. 539-545.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 539-545
Mots-clés : Brassica fruticulosa Cyr. Brassica incana Ten. Volatile constituents Isothiocyanates SPME–GC–MS Résumé : Two species of Brassicaceae (Crucifer) family, used and appreciated as traditional wild vegetables, including Brassica fruticulosa Cyr. and Brassica incana Ten., were examined as potential source of bioactive volatile compounds. The volatile constituents released by the chopped leaves and roots were extracted and analyzed by solid-phase microextraction–gas chromatography–mass spectrometry (SPME–GC–MS). A large number of volatile constituents were identified: alcohols, aldehydes, esters, acids, ketones, terpenes, C13-norisoprenoides and sulfur compounds. Volatiles included isothiocyanates with a well known anticancer activity – the largest amount resulted in the roots, with 3-butenyl isothiocyanate the most represented in both species; of great interest also the good amount revealed in the leaves of Brassica fruticulosa Cyr. The revaluation of these plants, a vegetable source of high antioxidant power, will be interesting for consumer health by the production of new commercial herbal products and/or dietary supplements of high quality and low cost. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.730492
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 547-554
Titre : Chemical characterization and antimicrobial evaluation of the essential oils from baccharis uncinella D.C. and baccharis semiserrata D.C. (Asteraceae) Type de document : texte imprimé Auteurs : A. B. Vannini, Auteur ; T. G. Santos, Auteur ; A. C. Fleming, Auteur Année de publication : 2014 Article en page(s) : pp. 547-554 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Baccharis uncinella Baccharis semiserrata Essential oil composition Spathulenol Antibacterial Antifungal and antiprotozoal activities Résumé : Due to the biological properties associated to the Baccharis genus and the limited information on its antimicrobial properties, the present work investigates the chemical composition and antibacterial, antifungal and antiprotozoal activities of the essential oils of two species, B. uncinella from Campo Alegre and B. semiserrata from Atalanta, both places located in Santa Catarina State, Southern Brazil. Oils were obtained by hydrodistillation and were analyzed by gas chromatography–flame ionization detector (GC–FID) and GC–mass spectrometry (GC–MS). The dry leaf essential oil yield from B. uncinella was 0.65% (m/m), and 0.50% and 0.22% (m/m) for dry leaf and twig from B. semiserrata, respectively. The main components in the oil from B. uncinella were α-pinene (9.0%), β-pinene (9.2%), limonene (11.5%), β-caryophyllene (13.2%) and spathulenol (9.3%). The following major compounds were identified in the leaf essential oil from B. semiserrata: α-pinene (4.3%), β-pinene (11.4%), limonene (6.7%), β-caryophyllene (8.2%), γ-muurolene (7.3%), bicyclogermacrene (8.0%), E-nerolidol (9.6%) and spathulenol (9.8%). Similarly, in the essential oil from the twigs were α-pinene (3.3%), β-pinene (7.9%), limonene (9.1%), β-caryophyllene (3.9%), bicyclogermacrene (6.0%), spathulenol (25.1%), caryophyllene oxide (8.0%) and globulol (5.6%). The antibacterial activity was determined by microdilution method. Baccharis uncinella oil was inactive for all bacteria tested and B. semiserrata twigs oil presented moderate activity against Staphylococcus aureus and the leaves weak activity against S. aureus and Bacillus cereus. The antifungal activity was determinate by the agar dilution method. Baccharis uncinella oil was active against M. gypseum, T. mentagrophytes, C. neoformans and M. canis. Both, leaf and twig essential oils from B. semiserrata were active against Microsporum gypseum, Candida albicans, Epidermophyton flocosum, Trichophyton mentagrophytes and Cryptococcus neoformans. Baccharis semiserrata leaf essential oil was also active against Trichophyton rubrum. In the antiprotozoal assays, leaf essential oil from B. uncinella gave an IC50 of 223 μg/mL against Tripanossoma cruzi. Both leaf essential oils were active only at 500 μg/mL against Leishmania braziliensis. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728092 [article] Chemical characterization and antimicrobial evaluation of the essential oils from baccharis uncinella D.C. and baccharis semiserrata D.C. (Asteraceae) [texte imprimé] / A. B. Vannini, Auteur ; T. G. Santos, Auteur ; A. C. Fleming, Auteur . - 2014 . - pp. 547-554.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 547-554
Mots-clés : Baccharis uncinella Baccharis semiserrata Essential oil composition Spathulenol Antibacterial Antifungal and antiprotozoal activities Résumé : Due to the biological properties associated to the Baccharis genus and the limited information on its antimicrobial properties, the present work investigates the chemical composition and antibacterial, antifungal and antiprotozoal activities of the essential oils of two species, B. uncinella from Campo Alegre and B. semiserrata from Atalanta, both places located in Santa Catarina State, Southern Brazil. Oils were obtained by hydrodistillation and were analyzed by gas chromatography–flame ionization detector (GC–FID) and GC–mass spectrometry (GC–MS). The dry leaf essential oil yield from B. uncinella was 0.65% (m/m), and 0.50% and 0.22% (m/m) for dry leaf and twig from B. semiserrata, respectively. The main components in the oil from B. uncinella were α-pinene (9.0%), β-pinene (9.2%), limonene (11.5%), β-caryophyllene (13.2%) and spathulenol (9.3%). The following major compounds were identified in the leaf essential oil from B. semiserrata: α-pinene (4.3%), β-pinene (11.4%), limonene (6.7%), β-caryophyllene (8.2%), γ-muurolene (7.3%), bicyclogermacrene (8.0%), E-nerolidol (9.6%) and spathulenol (9.8%). Similarly, in the essential oil from the twigs were α-pinene (3.3%), β-pinene (7.9%), limonene (9.1%), β-caryophyllene (3.9%), bicyclogermacrene (6.0%), spathulenol (25.1%), caryophyllene oxide (8.0%) and globulol (5.6%). The antibacterial activity was determined by microdilution method. Baccharis uncinella oil was inactive for all bacteria tested and B. semiserrata twigs oil presented moderate activity against Staphylococcus aureus and the leaves weak activity against S. aureus and Bacillus cereus. The antifungal activity was determinate by the agar dilution method. Baccharis uncinella oil was active against M. gypseum, T. mentagrophytes, C. neoformans and M. canis. Both, leaf and twig essential oils from B. semiserrata were active against Microsporum gypseum, Candida albicans, Epidermophyton flocosum, Trichophyton mentagrophytes and Cryptococcus neoformans. Baccharis semiserrata leaf essential oil was also active against Trichophyton rubrum. In the antiprotozoal assays, leaf essential oil from B. uncinella gave an IC50 of 223 μg/mL against Tripanossoma cruzi. Both leaf essential oils were active only at 500 μg/mL against Leishmania braziliensis. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728092
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 555-559
Titre : The essential oil of mongolian nepeta sibirica : a single component and its biological activities Type de document : texte imprimé Auteurs : Tsutomu Tsuruoka, Auteur ; Davaapurev Bekh-Ochir, Auteur ; Fumio Kato, Auteur Année de publication : 2014 Article en page(s) : pp. 555-559 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Nepeta sibirica Mongolian traditional medicines 4aα 7α 7aα-nepetalactones Antimicrobial activity Cytotoxicity Résumé : Nepeta sibirica L. has been used for the treatment of various diseases and is one of the traditional medicines of Mongolia. The essential oil of N. sibirica was shown to contain a single component by gas chromatography–mass spectrometry (GC–MS) analysis. The optical rotation and nuclear magnetic resonance (NMR) analyses demonstrated that the component was 4aα,7α,7aα-nepetalactone. This essential oil, that is, 4aα,7α,7aα-nepetalactone, showed antimicrobial activity against Staphylococcus aureus, Escherichia coli, Candida albicans and Aspergillus fumigatus. Cell cytotoxicity testing showed that the nepetalactone was cytotoxic to HL60 myeloma and Kato III stomach carcinoma cell lines. The essential oil of this Mongolian N. sibirica is useful for researching the bioactivity of nepetalactone, which has been difficult to prepare. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.729925 [article] The essential oil of mongolian nepeta sibirica : a single component and its biological activities [texte imprimé] / Tsutomu Tsuruoka, Auteur ; Davaapurev Bekh-Ochir, Auteur ; Fumio Kato, Auteur . - 2014 . - pp. 555-559.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 555-559
Mots-clés : Nepeta sibirica Mongolian traditional medicines 4aα 7α 7aα-nepetalactones Antimicrobial activity Cytotoxicity Résumé : Nepeta sibirica L. has been used for the treatment of various diseases and is one of the traditional medicines of Mongolia. The essential oil of N. sibirica was shown to contain a single component by gas chromatography–mass spectrometry (GC–MS) analysis. The optical rotation and nuclear magnetic resonance (NMR) analyses demonstrated that the component was 4aα,7α,7aα-nepetalactone. This essential oil, that is, 4aα,7α,7aα-nepetalactone, showed antimicrobial activity against Staphylococcus aureus, Escherichia coli, Candida albicans and Aspergillus fumigatus. Cell cytotoxicity testing showed that the nepetalactone was cytotoxic to HL60 myeloma and Kato III stomach carcinoma cell lines. The essential oil of this Mongolian N. sibirica is useful for researching the bioactivity of nepetalactone, which has been difficult to prepare. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.729925
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 561-570
Titre : Essential oils from baccharis species (Asteraceae) have anti-inflammatory effects for human cells Type de document : texte imprimé Auteurs : Angela Florão, Auteur ; Jane Manfrom Budel, Auteur ; Marcia do Rocio Duarte, Auteur Année de publication : 2014 Article en page(s) : pp. 561-570 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Baccharis Asteraceae Essential oil composition Spathulenol immunomodulation Chemotaxis Résumé : Constituents of the essential oils from the aerial parts of Baccharis articulata (Ba), Baccharis genistelloides subsp. crispa (Bc), Baccharis dracunculifolia (Bd) and Baccharis gaudichaudiana (Bg), Asteraceae, obtained by hydrodistillation and analyzed by gas chromatography (GC)/mass spectrometry (MS) and GC/flame ionization detector (FID) were identified. Also, their anti-inflammatory potential, focusing their immunomodulatory activity using flow cytometric analyses and AgNOR profiles, and anti-chemotactic properties, conducted using a Boyden’s chamber system, were investigated. Fifty-eight compounds were characterized, representing 66.7% of the total components detected. The major constituents identified were spathulenol (in Ba, Bd and Bg), τ-gurjunene (in Bg) and palustrol (in Ba). The data presented herein showed that the Baccharis essential oils included in this study were inert for human resting lymphocytes, while all but Ba’s inhibited significantly the proliferation of their phytohemagglutinin-stimulated counterparts. In addition, only the essential oil of Bd inhibited significantly the casein-induced human granulocyte chemotaxis. This is the first report concerning the potential diversity of anti-inflammatory activities of the essential oils of Baccharis plants on human cells responsible for the host defense mechanisms that may be of benefit in intervening with immune disorders associated or not with inflammatory conditions. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728081 [article] Essential oils from baccharis species (Asteraceae) have anti-inflammatory effects for human cells [texte imprimé] / Angela Florão, Auteur ; Jane Manfrom Budel, Auteur ; Marcia do Rocio Duarte, Auteur . - 2014 . - pp. 561-570.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 561-570
Mots-clés : Baccharis Asteraceae Essential oil composition Spathulenol immunomodulation Chemotaxis Résumé : Constituents of the essential oils from the aerial parts of Baccharis articulata (Ba), Baccharis genistelloides subsp. crispa (Bc), Baccharis dracunculifolia (Bd) and Baccharis gaudichaudiana (Bg), Asteraceae, obtained by hydrodistillation and analyzed by gas chromatography (GC)/mass spectrometry (MS) and GC/flame ionization detector (FID) were identified. Also, their anti-inflammatory potential, focusing their immunomodulatory activity using flow cytometric analyses and AgNOR profiles, and anti-chemotactic properties, conducted using a Boyden’s chamber system, were investigated. Fifty-eight compounds were characterized, representing 66.7% of the total components detected. The major constituents identified were spathulenol (in Ba, Bd and Bg), τ-gurjunene (in Bg) and palustrol (in Ba). The data presented herein showed that the Baccharis essential oils included in this study were inert for human resting lymphocytes, while all but Ba’s inhibited significantly the proliferation of their phytohemagglutinin-stimulated counterparts. In addition, only the essential oil of Bd inhibited significantly the casein-induced human granulocyte chemotaxis. This is the first report concerning the potential diversity of anti-inflammatory activities of the essential oils of Baccharis plants on human cells responsible for the host defense mechanisms that may be of benefit in intervening with immune disorders associated or not with inflammatory conditions. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728081
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 571-577
Titre : Sedative effect of vapor inhalation of essential oil from heracleum afghanicum kitamura seeds Type de document : texte imprimé Auteurs : Abdul Ghani Karimi, Auteur ; Michiho Ito, Auteur Année de publication : 2014 Article en page(s) : pp. 571-577 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Heracleum afghanicum Apiaceae Essential oil composition Vapor inhalation Sedative effect Aliphatic esters Hexyl butyrate Octyl acetate Résumé : Heracleum afghanicum (Apiaceae) is a perennial plant indigenous to Afghanistan. Phytochemical and pharmacological analyses of H. afghanicum seeds essential oil were carried out to investigate its possible sedative effects on mice spontaneous locomotor activity. The essential oil was analyzed by gas chromatography (GC) and GC/mass spectrometry (GC/MS), and thirty-three constituents were identified. Hexyl butyrate (34.3%) and octyl acetate (21.1%) were found as its principal constituents. The sedative effect of H. afghanicum essential oil was confirmed using an open field test with ddY mice. The essential oil significantly decreased the locomotor activity of mice, suggesting its sedative effect. Hexyl butyrate and octyl acetate were found to be responsible for the sedative activity of H. afghanicum seeds essential oil. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728085 [article] Sedative effect of vapor inhalation of essential oil from heracleum afghanicum kitamura seeds [texte imprimé] / Abdul Ghani Karimi, Auteur ; Michiho Ito, Auteur . - 2014 . - pp. 571-577.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 571-577
Mots-clés : Heracleum afghanicum Apiaceae Essential oil composition Vapor inhalation Sedative effect Aliphatic esters Hexyl butyrate Octyl acetate Résumé : Heracleum afghanicum (Apiaceae) is a perennial plant indigenous to Afghanistan. Phytochemical and pharmacological analyses of H. afghanicum seeds essential oil were carried out to investigate its possible sedative effects on mice spontaneous locomotor activity. The essential oil was analyzed by gas chromatography (GC) and GC/mass spectrometry (GC/MS), and thirty-three constituents were identified. Hexyl butyrate (34.3%) and octyl acetate (21.1%) were found as its principal constituents. The sedative effect of H. afghanicum essential oil was confirmed using an open field test with ddY mice. The essential oil significantly decreased the locomotor activity of mice, suggesting its sedative effect. Hexyl butyrate and octyl acetate were found to be responsible for the sedative activity of H. afghanicum seeds essential oil. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.728085
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 579-582
Titre : Antimicrobial activity of lemongrass (Cymbopogon citratus (DC) Stapf.) essential oil against food-borne pathogens added to cream-filled cakes and pastries Type de document : texte imprimé Auteurs : Mahdi Vazirian, Auteur ; Somayeh Taheri Kashani, Auteur ; Mohammad Reza Shams Ardekani, Auteur Année de publication : 2014 Article en page(s) : pp. 579-582 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Cymbopogon citratus Essential oil composition Neral Geranial Preservative Cream Pastries Résumé : Antimicrobial activity of the Cymbopogon citratus (DC) Stapf. (lemongrass) essential oil against food-borne pathogens was determined to investigate its potential for reducing microbial population of cream-filled baked goods. The chemical composition of the oil was analyzed by gas chromatography (GC)/mass spectrometry (MS) and fifteen components were identified, where neral (39.0%), geranial (33.3%), limonene (5.8%) and geranyl acetate (4.2) were the most abundant constituents. Five main food-borne pathogens including Staphylococcus aureus, Escherichia coli, Candida albicans, Bacillus cereus and Salmonella typhimurium were added to cream-filled cakes. Lemongrass essential oil showed potent antimicrobial activity against selected microorganisms. Minimum inhibitory concentration (MIC) values for essential oil against all tested microorganisms were determined as 0.5 μL/disc except for S. aureus, in which the oil was ineffective. By using 1 μL/mL of essential oil, more than a 99.9% reduction in susceptible microorganisms was observed. After baking the cream-filled cake with four main susceptible pathogens manually added, after 72 hours of baking, no observable microorganism was observed. The same as in previous works, we suggested lemongrass essential oil as a safe natural preservative and food spoilage inhibitor. It can also reduce the risk of diseases associated with the consumption of contaminated products. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.729920 [article] Antimicrobial activity of lemongrass (Cymbopogon citratus (DC) Stapf.) essential oil against food-borne pathogens added to cream-filled cakes and pastries [texte imprimé] / Mahdi Vazirian, Auteur ; Somayeh Taheri Kashani, Auteur ; Mohammad Reza Shams Ardekani, Auteur . - 2014 . - pp. 579-582.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 579-582
Mots-clés : Cymbopogon citratus Essential oil composition Neral Geranial Preservative Cream Pastries Résumé : Antimicrobial activity of the Cymbopogon citratus (DC) Stapf. (lemongrass) essential oil against food-borne pathogens was determined to investigate its potential for reducing microbial population of cream-filled baked goods. The chemical composition of the oil was analyzed by gas chromatography (GC)/mass spectrometry (MS) and fifteen components were identified, where neral (39.0%), geranial (33.3%), limonene (5.8%) and geranyl acetate (4.2) were the most abundant constituents. Five main food-borne pathogens including Staphylococcus aureus, Escherichia coli, Candida albicans, Bacillus cereus and Salmonella typhimurium were added to cream-filled cakes. Lemongrass essential oil showed potent antimicrobial activity against selected microorganisms. Minimum inhibitory concentration (MIC) values for essential oil against all tested microorganisms were determined as 0.5 μL/disc except for S. aureus, in which the oil was ineffective. By using 1 μL/mL of essential oil, more than a 99.9% reduction in susceptible microorganisms was observed. After baking the cream-filled cake with four main susceptible pathogens manually added, after 72 hours of baking, no observable microorganism was observed. The same as in previous works, we suggested lemongrass essential oil as a safe natural preservative and food spoilage inhibitor. It can also reduce the risk of diseases associated with the consumption of contaminated products. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.729920
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 583-591
Titre : Economic analysis on the enhancement of citrus waste for energy production Type de document : texte imprimé Auteurs : Maurizio Lanfranchi, Auteur Année de publication : 2014 Article en page(s) : pp. 583-591 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Agro-energy policy Biomass Bio-fuel Citrus waste processing Résumé : In the last few decades, industrialized nations have become aware of the extent of how unsustainable some of the production models used are and have therefore adopted policies that aim both to save energy and to safeguard the environment through the use of alternative energy sources and, among these, biomass. The use of these alternative energy sources is very important: for example, this allows the saving of 200 g of CO2 per product, in addition to avoiding the emission of sulfur and other pollutants. The energy produced from biomass can be recovered by burning the material directly for heat, and turning it into fuel, to make it more convenient to use. The choice of destination of biomass depends on the characteristics of the biomass available, because the content of carbon and nitrogen, moisture and volatile substances influence the choice of energy conversion. The aim of this work is to briefly outline an analysis on the importance that biomass can have especially ‘pastazzo’, which is the squeezed pulp (of the processed citrus fruits), for the enhancement of a sustainable economy, sought after in recent years not only by the EU but in an entire international context. The study is conducted by a research group as part of the Department Sefisast, Section of Agricultural Economics and Policy, specifically directed by Prof. M. Lanfranchi. The research is based on the assumption that one can obtain both energy and bio-ethanol, not only from agricultural waste but also from the waste products of the citrus industry arising from the processes of extracting juice and oil from skins. The use of the ‘squeezed pulp’ could possibly help solve some of the serious environmental problems especially in the Mediterranean basin, particularly in Sicily, which is a major citrus producing region. This particular study aims to assess the cost of producing ethanol from squeezed pulp, with particular attention to the processing of lemons, a product in which the province of Messina has a leading role in terms of utilized agricultural area. The first part of this work presents a discussion on the evolutionary aspects of EU energy policy; in the second part, it explains the importance of biomass and its potential uses, and the last part contains data on the potential calories that can be obtained from the processing of squeezed pulp. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.739788 [article] Economic analysis on the enhancement of citrus waste for energy production [texte imprimé] / Maurizio Lanfranchi, Auteur . - 2014 . - pp. 583-591.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 583-591
Mots-clés : Agro-energy policy Biomass Bio-fuel Citrus waste processing Résumé : In the last few decades, industrialized nations have become aware of the extent of how unsustainable some of the production models used are and have therefore adopted policies that aim both to save energy and to safeguard the environment through the use of alternative energy sources and, among these, biomass. The use of these alternative energy sources is very important: for example, this allows the saving of 200 g of CO2 per product, in addition to avoiding the emission of sulfur and other pollutants. The energy produced from biomass can be recovered by burning the material directly for heat, and turning it into fuel, to make it more convenient to use. The choice of destination of biomass depends on the characteristics of the biomass available, because the content of carbon and nitrogen, moisture and volatile substances influence the choice of energy conversion. The aim of this work is to briefly outline an analysis on the importance that biomass can have especially ‘pastazzo’, which is the squeezed pulp (of the processed citrus fruits), for the enhancement of a sustainable economy, sought after in recent years not only by the EU but in an entire international context. The study is conducted by a research group as part of the Department Sefisast, Section of Agricultural Economics and Policy, specifically directed by Prof. M. Lanfranchi. The research is based on the assumption that one can obtain both energy and bio-ethanol, not only from agricultural waste but also from the waste products of the citrus industry arising from the processes of extracting juice and oil from skins. The use of the ‘squeezed pulp’ could possibly help solve some of the serious environmental problems especially in the Mediterranean basin, particularly in Sicily, which is a major citrus producing region. This particular study aims to assess the cost of producing ethanol from squeezed pulp, with particular attention to the processing of lemons, a product in which the province of Messina has a leading role in terms of utilized agricultural area. The first part of this work presents a discussion on the evolutionary aspects of EU energy policy; in the second part, it explains the importance of biomass and its potential uses, and the last part contains data on the potential calories that can be obtained from the processing of squeezed pulp. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.739788
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 593-598
Titre : Structure and properties of constituents in hexane extract of frankincense Type de document : texte imprimé Auteurs : Toshio Hasegawa, Auteur ; Akiko Kikuchi, Auteur ; Hideki Saitoh, Auteur Année de publication : 2014 Article en page(s) : pp. 593-598 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Frankincense Boswellia Diterpene Incensole X-ray crystallographic analysis Constituents Résumé : Frankincense has a unique odor and is an important fragrance material for Japanese incense. The constituents of frankincense vary according to the species of tree from which the resin is derived. The aroma profile of the frankincense used in Japanese incense showed that the important odor components were diterpenes, and incensole and its derivatives. These compounds have not been previously recognized as important odor compounds, and the relative stereochemistry of the diterpenes has not been assigned. We investigated the stereochemical structures of these compounds through synthetic studies with respect to 2. Incensole epoxide was isolated as pure crystals, and its structure was determined by single-crystal X-ray diffraction. The stereochemistry of the diterpenes was assigned by synthetic methods. Incensole and incensole acetate in the hexane extracts gradually oxidized to their epoxides, although this was not observed in the isolated pure compounds. These results indicate that incensole epoxides are not primary constituents of frankincense, but secondary products. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.742468 [article] Structure and properties of constituents in hexane extract of frankincense [texte imprimé] / Toshio Hasegawa, Auteur ; Akiko Kikuchi, Auteur ; Hideki Saitoh, Auteur . - 2014 . - pp. 593-598.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 593-598
Mots-clés : Frankincense Boswellia Diterpene Incensole X-ray crystallographic analysis Constituents Résumé : Frankincense has a unique odor and is an important fragrance material for Japanese incense. The constituents of frankincense vary according to the species of tree from which the resin is derived. The aroma profile of the frankincense used in Japanese incense showed that the important odor components were diterpenes, and incensole and its derivatives. These compounds have not been previously recognized as important odor compounds, and the relative stereochemistry of the diterpenes has not been assigned. We investigated the stereochemical structures of these compounds through synthetic studies with respect to 2. Incensole epoxide was isolated as pure crystals, and its structure was determined by single-crystal X-ray diffraction. The stereochemistry of the diterpenes was assigned by synthetic methods. Incensole and incensole acetate in the hexane extracts gradually oxidized to their epoxides, although this was not observed in the isolated pure compounds. These results indicate that incensole epoxides are not primary constituents of frankincense, but secondary products. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.742468
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 599-604
Titre : Chemical analyses of the essential oils from leaves of mikania glauca mart. ex baker Type de document : texte imprimé Auteurs : Luiz Gustavo de L. Guimarães, Auteur ; Maria das G. Cardoso, Auteur ; Lucilene F. Silva, Auteur Année de publication : 2014 Article en page(s) : pp. 599-604 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Mikania glauca Asteraceae β-pinene α-pinene Myrcene Résumé : The essential oils obtained by hydrodistillation of two samples of fresh Mikania glauca leaves collected in different periods were analyzed by gas chromatography (GC) and by GC–mass spectrometry (GC–MS). Twenty compounds, representing 99% of the total oil composition, were identified and quantified in sample 1, while forty-five compounds, also representing 99% of the total oil composition, were identified in sample 2. The essential oils from the fresh leaves of both samples were rich in the terpenes. In sample 1 and 2, respectively, α-pinene (27% and 26%), β-pinene (22% and 36%), myrcene (24% and 18%), β-caryophyllene (9% and 6%) and bicyclogermacrene (8% and 4%) were the principal constituents. This demonstrated the predominance of monoterpene hydrocarbons in the essential oil of M. glauca and the influence of the collection period on the concentrations of the components. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.742789 [article] Chemical analyses of the essential oils from leaves of mikania glauca mart. ex baker [texte imprimé] / Luiz Gustavo de L. Guimarães, Auteur ; Maria das G. Cardoso, Auteur ; Lucilene F. Silva, Auteur . - 2014 . - pp. 599-604.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 599-604
Mots-clés : Mikania glauca Asteraceae β-pinene α-pinene Myrcene Résumé : The essential oils obtained by hydrodistillation of two samples of fresh Mikania glauca leaves collected in different periods were analyzed by gas chromatography (GC) and by GC–mass spectrometry (GC–MS). Twenty compounds, representing 99% of the total oil composition, were identified and quantified in sample 1, while forty-five compounds, also representing 99% of the total oil composition, were identified in sample 2. The essential oils from the fresh leaves of both samples were rich in the terpenes. In sample 1 and 2, respectively, α-pinene (27% and 26%), β-pinene (22% and 36%), myrcene (24% and 18%), β-caryophyllene (9% and 6%) and bicyclogermacrene (8% and 4%) were the principal constituents. This demonstrated the predominance of monoterpene hydrocarbons in the essential oil of M. glauca and the influence of the collection period on the concentrations of the components. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.742789
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