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Changes in essential oil composition of tunisian myrtus communis var. italica L. during Its vegetable cycle / Wissem A. Wannes in The journal of essential oil research, Vol. 22 N° 1 (Janvier/Fevrier 2010) 

Public ISBD [article]  in The journal of essential oil research > Vol. 22 N° 1 (Janvier/Fevrier 2010) . - pp. 13-18 Titre : Changes in essential oil composition of tunisian myrtus communis var. italica L. during Its vegetable cycle Type de document : texte imprimé Auteurs : Wissem A. Wannes, Auteur ; Baya Mhamdi, Auteur ; Jazia Sriti, Auteur Article en page(s) : pp. 13-18 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Myrtus  communis  var.  italica  Myrtaceae  Essential  oil  composition  α-pinene  1,8-cineole  Linalool  Limonene  Geranyl  acetate  Seasonal  variation Index. décimale : 646 Résumé : Myrtus communis var. italica leaves, fruits and stems were gathered from North Tunisia in order to investigate their essential oils during a one-year vegetative cycle by GC-FID and GC/MS. The yield and composition of myrtle oils were found to depend on the organ type and on the harvest period. The oil yield varied from 0.14–0.61% for the leaves, 0.003–0.11% for the fruits, and 0.001–0.06% for the stems. Forty-eight compounds were identified in leaf oils; α-pinene (28.3–58.0%), 1,8-cineole (12.7–30.7%), linalool (2.4–21.5%) and limonene (0.1–13.3%) were the main components. In the fruit oils, 46 compounds were identified with 1,8-cineole (7.3–44.9%), geranyl acetate (1.8–20.5%), linalool (0.7–18.9%) and α-pinene (1.2–12.6%) being the main compounds. Only 40 components were identified in stem oils, which were rich in 1,8-cineole (21.0–52.4%), linalool (3.1–18.4%) and α-pinene (1.5–16.1%). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/47#top [article] Changes in essential oil composition of tunisian myrtus communis var. italica L. during Its vegetable cycle [texte imprimé] / Wissem A. Wannes, Auteur ; Baya Mhamdi, Auteur ; Jazia Sriti, Auteur . - pp. 13-18. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 22 N° 1 (Janvier/Fevrier 2010) . - pp. 13-18 Mots-clés : Myrtus  communis  var.  italica  Myrtaceae  Essential  oil  composition  α-pinene  1,8-cineole  Linalool  Limonene  Geranyl  acetate  Seasonal  variation Index. décimale : 646 Résumé : Myrtus communis var. italica leaves, fruits and stems were gathered from North Tunisia in order to investigate their essential oils during a one-year vegetative cycle by GC-FID and GC/MS. The yield and composition of myrtle oils were found to depend on the organ type and on the harvest period. The oil yield varied from 0.14–0.61% for the leaves, 0.003–0.11% for the fruits, and 0.001–0.06% for the stems. Forty-eight compounds were identified in leaf oils; α-pinene (28.3–58.0%), 1,8-cineole (12.7–30.7%), linalool (2.4–21.5%) and limonene (0.1–13.3%) were the main components. In the fruit oils, 46 compounds were identified with 1,8-cineole (7.3–44.9%), geranyl acetate (1.8–20.5%), linalool (0.7–18.9%) and α-pinene (1.2–12.6%) being the main compounds. Only 40 components were identified in stem oils, which were rich in 1,8-cineole (21.0–52.4%), linalool (3.1–18.4%) and α-pinene (1.5–16.1%). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/47#top

Chemical composition and antioxidant activities of tunisian and canadian coriander (coriandrum sativum L.) fruit / Jazia Sriti in The journal of essential oil research, Vol. 23 N° 4 (Juillet/Août 2011) 

Public ISBD [article]  in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 7-15 Titre : Chemical composition and antioxidant activities of tunisian and canadian coriander (coriandrum sativum L.) fruit Type de document : texte imprimé Auteurs : Jazia Sriti, Auteur ; Wissem Aidi Wannes, Auteur ; Thierry Talou, Auteur Année de publication : 2011 Article en page(s) : pp. 7-15 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Coriandrum  sativum  Fruit  Essential  oil  Linalool  Polyphenols  Antioxidant  activity Index. décimale : 646 Résumé : This study was designed to examine the essential oil composition, phenolic contents and antioxidant activity of the essential oils and methanol extracts from two coriander fruit samples, the first from Tunisia (Tn) and the second from Canada (Can). The highest essential oil yield was observed for Can with 0.44% (w/w) and 0.37% (w/w) for Tn. Forty-five compounds were identified in the essential oils and the main compound of both samples was linalool. The total phenol contents varied between two coriander fruit samples; Can sample presented high polyphenol contents (15.16 mg GAE/g) compared with Tn one (12.10 mg GAE/g). Significant differences were also found in total tannin contents among representing 0.7 mg GAE/g in Can and 0.34 mg GAE/g in Tn. The highest contents of total flavonoids were observed in Can sample with 13.2 mg CE/g Antioxidants of essential oils and methanolic extracts of these fruit samples were evaluated by using DPPH radical scavenging, β-carotene-linoleic acid bleaching and reducing power activity assays. In all tests, methanolic extracts of coriander fruits showed better antioxidant activity than essential oils. DPPH scavenging ability of methanolic extracts of two fruits was higher than that of synthetic antioxidant BHT (IC50 = 25 μg/mL). Both extracts and essential oils had lower β-carotene bleaching activity than BHA and BHT and had lower reducing power than ascorbic acid (EC50 = 40 μg/mL). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700462 [article] Chemical composition and antioxidant activities of tunisian and canadian coriander (coriandrum sativum L.) fruit [texte imprimé] / Jazia Sriti, Auteur ; Wissem Aidi Wannes, Auteur ; Thierry Talou, Auteur . - 2011 . - pp. 7-15. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 7-15 Mots-clés : Coriandrum  sativum  Fruit  Essential  oil  Linalool  Polyphenols  Antioxidant  activity Index. décimale : 646 Résumé : This study was designed to examine the essential oil composition, phenolic contents and antioxidant activity of the essential oils and methanol extracts from two coriander fruit samples, the first from Tunisia (Tn) and the second from Canada (Can). The highest essential oil yield was observed for Can with 0.44% (w/w) and 0.37% (w/w) for Tn. Forty-five compounds were identified in the essential oils and the main compound of both samples was linalool. The total phenol contents varied between two coriander fruit samples; Can sample presented high polyphenol contents (15.16 mg GAE/g) compared with Tn one (12.10 mg GAE/g). Significant differences were also found in total tannin contents among representing 0.7 mg GAE/g in Can and 0.34 mg GAE/g in Tn. The highest contents of total flavonoids were observed in Can sample with 13.2 mg CE/g Antioxidants of essential oils and methanolic extracts of these fruit samples were evaluated by using DPPH radical scavenging, β-carotene-linoleic acid bleaching and reducing power activity assays. In all tests, methanolic extracts of coriander fruits showed better antioxidant activity than essential oils. DPPH scavenging ability of methanolic extracts of two fruits was higher than that of synthetic antioxidant BHT (IC50 = 25 μg/mL). Both extracts and essential oils had lower β-carotene bleaching activity than BHA and BHT and had lower reducing power than ascorbic acid (EC50 = 40 μg/mL). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700462