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Composition of leaf and rhizome essential oils of hedychium coronarium koen. from Brazil / Bruna C. B. Dos Santos in The journal of essential oil research, Vol. 22 N° 4 (Juillet/Août 2010) 

Public ISBD [article]  in The journal of essential oil research > Vol. 22 N° 4 (Juillet/Août 2010) . - pp. 305-306 Titre : Composition of leaf and rhizome essential oils of hedychium coronarium koen. from Brazil Type de document : texte imprimé Auteurs : Bruna C. B. Dos Santos, Auteur ; Lauro E. S. Barata, Auteur ; Francisco A. Marques, Auteur Année de publication : 2011 Article en page(s) : pp. 305-306 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Hedychium  coronarium  Zingiberaceae  Essential  oil  composition  1,8-cineole  β-caryophyllene Index. décimale : 646 Résumé : Hydrodistillation of fresh leaves and rhizomes of Hedychium coronarium collected in the Atlantic rain forest of southeastern Brazil afforded essential oils in 0.68% and 0.20% yields, respectively. Analysis of the oils by GC and GC/MS revealed as predominant constituents in the leaf oil β-caryophyllene (43.0%), caryophyllene oxide (12.1%) and β-pinene (11.6%,), whereas 1,8-cineole (34.8%), β-pinene (16.7%) and α-terpineol (13.1%) were the major components identified in the rhizome oil. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700331 [article] Composition of leaf and rhizome essential oils of hedychium coronarium koen. from Brazil [texte imprimé] / Bruna C. B. Dos Santos, Auteur ; Lauro E. S. Barata, Auteur ; Francisco A. Marques, Auteur . - 2011 . - pp. 305-306. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 22 N° 4 (Juillet/Août 2010) . - pp. 305-306 Mots-clés : Hedychium  coronarium  Zingiberaceae  Essential  oil  composition  1,8-cineole  β-caryophyllene Index. décimale : 646 Résumé : Hydrodistillation of fresh leaves and rhizomes of Hedychium coronarium collected in the Atlantic rain forest of southeastern Brazil afforded essential oils in 0.68% and 0.20% yields, respectively. Analysis of the oils by GC and GC/MS revealed as predominant constituents in the leaf oil β-caryophyllene (43.0%), caryophyllene oxide (12.1%) and β-pinene (11.6%,), whereas 1,8-cineole (34.8%), β-pinene (16.7%) and α-terpineol (13.1%) were the major components identified in the rhizome oil. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700331

Seasonal variation of the volatile constituents from leaves of pimenta pseudocaryophyllus (Gomes) / Lauro E. S. Barata 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. 54-57 Titre : Seasonal variation of the volatile constituents from leaves of pimenta pseudocaryophyllus (Gomes) Type de document : texte imprimé Auteurs : Lauro E. S. Barata, Auteur ; Bruna C. B. Dos Santos, Auteur ; Francisco A. Marques, Auteur Année de publication : 2011 Article en page(s) : pp. 54-57 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Seasonal  variation  Pimenta  pseudocaryophyllus  Chavibetol  Essential  oil Index. décimale : 646 Résumé : The chemical variation of volatile constituents from leaves of Pimenta pseudocaryophyllus collected bimonthly for one year from a locality in the Atlantic Rain Forest, southeastern Brazil, was determined by GC/MS. Seven com- pounds were identified and characterized, revealing a predominance of phenylpropanoids (15.4–70.9%) and variable amounts of monoterpenes (0.5–5.3%). The composition of the oil changed month by month. The best yield of oil was obtained in November, and the major component chavibetol was present in all samples (50.2–70.9%). The chavibetol content showed significant seasonal variation, with the maximum percentages of 69.1% and 70.9% measured in January and November, respectively. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700469 [article] Seasonal variation of the volatile constituents from leaves of pimenta pseudocaryophyllus (Gomes) [texte imprimé] / Lauro E. S. Barata, Auteur ; Bruna C. B. Dos Santos, Auteur ; Francisco A. Marques, Auteur . - 2011 . - pp. 54-57. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 23 N° 4 (Juillet/Août 2011) . - pp. 54-57 Mots-clés : Seasonal  variation  Pimenta  pseudocaryophyllus  Chavibetol  Essential  oil Index. décimale : 646 Résumé : The chemical variation of volatile constituents from leaves of Pimenta pseudocaryophyllus collected bimonthly for one year from a locality in the Atlantic Rain Forest, southeastern Brazil, was determined by GC/MS. Seven com- pounds were identified and characterized, revealing a predominance of phenylpropanoids (15.4–70.9%) and variable amounts of monoterpenes (0.5–5.3%). The composition of the oil changed month by month. The best yield of oil was obtained in November, and the major component chavibetol was present in all samples (50.2–70.9%). The chavibetol content showed significant seasonal variation, with the maximum percentages of 69.1% and 70.9% measured in January and November, respectively. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700469