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Influence of co-distillation with weed biomass on yield and chemical composition of rose-scented geranium (pelargonium species) oil / Bhaskaruni R. Rajeswara Rao in The journal of essential oil research, Vol. 17 N° 1 (Janvier-Fevrier 2005) 

Public ISBD [article]  in The journal of essential oil research > Vol. 17 N° 1 (Janvier-Fevrier 2005) . - pp. 41-43 Titre : Influence of co-distillation with weed biomass on yield and chemical composition of rose-scented geranium (pelargonium species) oil Type de document : texte imprimé Auteurs : Bhaskaruni R. Rajeswara Rao, Auteur ; Pran N. Kaul, Auteur ; Kamla Singh, Auteur Année de publication : 2006 Article en page(s) : pp. 41-43 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Pelargonium  sp  Geraniaceae  Rose-scented  geranium  Weed  biomass  co-distillation  Cultivars  Oil  yield  Essential  oil  composition  Citronellol  Geraniol Résumé : A laboratory experiment was performed to study the influence of distilling rose-scented geranium (Pelargonium species) biomass together with different proportions (0, 5, 10, 15 and 30% by weight of rose-scented geranium biomass) of biomass of weed species growing in rose-scented geranium fields, on the yields % and compositions of oils of cultivars Algerian, Bourbon and Kelkar. Crop:weed mixtures reduced oil yields of all the three cultivars in comparison to control (pure crop biomass). Combined distillation of biomass of cv. Algerian with weed biomass decreased the concentrations of linalool, geraniol, geranyl formate, 10-epi-γeudesmol and increased the contents of isomenthone, citronellol and citronellyl formate in its oil. This distillation method resulted in enhancements in isomenthone, citronellol and reductions in geraniol and geranyl formate in the oil of cv. Bourbon. In cv. Kelkar, the percentages of linalool and isomenthone increased, but that of citronellol and geraniol decreased in crop:weed mixed distillations. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698824 [article] Influence of co-distillation with weed biomass on yield and chemical composition of rose-scented geranium (pelargonium species) oil [texte imprimé] / Bhaskaruni R. Rajeswara Rao, Auteur ; Pran N. Kaul, Auteur ; Kamla Singh, Auteur . - 2006 . - pp. 41-43. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 17 N° 1 (Janvier-Fevrier 2005) . - pp. 41-43 Mots-clés : Pelargonium  sp  Geraniaceae  Rose-scented  geranium  Weed  biomass  co-distillation  Cultivars  Oil  yield  Essential  oil  composition  Citronellol  Geraniol Résumé : A laboratory experiment was performed to study the influence of distilling rose-scented geranium (Pelargonium species) biomass together with different proportions (0, 5, 10, 15 and 30% by weight of rose-scented geranium biomass) of biomass of weed species growing in rose-scented geranium fields, on the yields % and compositions of oils of cultivars Algerian, Bourbon and Kelkar. Crop:weed mixtures reduced oil yields of all the three cultivars in comparison to control (pure crop biomass). Combined distillation of biomass of cv. Algerian with weed biomass decreased the concentrations of linalool, geraniol, geranyl formate, 10-epi-γeudesmol and increased the contents of isomenthone, citronellol and citronellyl formate in its oil. This distillation method resulted in enhancements in isomenthone, citronellol and reductions in geraniol and geranyl formate in the oil of cv. Bourbon. In cv. Kelkar, the percentages of linalool and isomenthone increased, but that of citronellol and geraniol decreased in crop:weed mixed distillations. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698824

Volatile constituents of essential oils isolated from different parts of alpinia calcarata rosc. / Pran N. Kaul in The journal of essential oil research, Vol. 17 N° 1 (Janvier-Fevrier 2005) 

Public ISBD [article]  in The journal of essential oil research > Vol. 17 N° 1 (Janvier-Fevrier 2005) . - pp. 7-9 Titre : Volatile constituents of essential oils isolated from different parts of alpinia calcarata rosc. Type de document : texte imprimé Auteurs : Pran N. Kaul, Auteur ; Bhaskaruni R. Rajeswara Rao, Auteur ; Kamla Singh, Auteur Année de publication : 2006 Article en page(s) : pp. 7-9 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Alpinia  calcarata  Zingiberaceae  Essential  oil  composition  1,8-cineole  α-fenchyl  acetate  β-pinene  (E)-methyl Résumé : The essential oils isolated from different parts of Alpinia calcarata Rosc., (family: Zingiberaceae) growing in Hyderabad, south India, were analyzed by capillary GC and GC/MS. The oil yields were: flower 0.06%, leaf sheath 0.03%, stem 0.05% and root 0.18%. Sixty-two compounds accounting for 92.3–98.3% of the oils were identified. The flower oil contained β-pinene (12.5%), 1,8-cineole (12.8%) and (E)-methyl cinnamate (12.3%) as the major constituents. The important components of the leaf sheath oil were 1,8-cineole (23.2%) and humulene epoxide I (10.6%). The stem oil had β-pinene (11.2%) and 1,8-cineole (33.2%) as the major compounds. On the other hand, the root oil showed camphene (13.6%), 1,8-cineole (15.6%) and α-fenchyl acetate (37.6%) as the main constituents. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698814 [article] Volatile constituents of essential oils isolated from different parts of alpinia calcarata rosc. [texte imprimé] / Pran N. Kaul, Auteur ; Bhaskaruni R. Rajeswara Rao, Auteur ; Kamla Singh, Auteur . - 2006 . - pp. 7-9. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 17 N° 1 (Janvier-Fevrier 2005) . - pp. 7-9 Mots-clés : Alpinia  calcarata  Zingiberaceae  Essential  oil  composition  1,8-cineole  α-fenchyl  acetate  β-pinene  (E)-methyl Résumé : The essential oils isolated from different parts of Alpinia calcarata Rosc., (family: Zingiberaceae) growing in Hyderabad, south India, were analyzed by capillary GC and GC/MS. The oil yields were: flower 0.06%, leaf sheath 0.03%, stem 0.05% and root 0.18%. Sixty-two compounds accounting for 92.3–98.3% of the oils were identified. The flower oil contained β-pinene (12.5%), 1,8-cineole (12.8%) and (E)-methyl cinnamate (12.3%) as the major constituents. The important components of the leaf sheath oil were 1,8-cineole (23.2%) and humulene epoxide I (10.6%). The stem oil had β-pinene (11.2%) and 1,8-cineole (33.2%) as the major compounds. On the other hand, the root oil showed camphene (13.6%), 1,8-cineole (15.6%) and α-fenchyl acetate (37.6%) as the main constituents. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698814