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Auteur Y. R. Rao |
Documents disponibles écrits par cet auteur (2)



Composition of absolutes of jasminum sambac L. flowers fractionated with liquid CO2 and methanol and comparison with liquid CO2 extract / P. K. Rout in The journal of essential oil research, Vol. 22 N° 5 (Septembre/Octobre 2010)
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Titre : Composition of absolutes of jasminum sambac L. flowers fractionated with liquid CO2 and methanol and comparison with liquid CO2 extract Type de document : texte imprimé Auteurs : P. K. Rout, Auteur ; S. N. Naik, Auteur ; Y. R. Rao, Auteur Année de publication : 2011 Article en page(s) : pp. 398-406 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Jasminum sambac Oleaceae Liquid CO2 fractionation extract Concrete composition Absolute Linalool Benzyl acetate (E,E)-α -farnesene (Z)-3-hexenyl benzoate Index. décimale : 646 Résumé : Absolutes obtained by fractionation of the pentane extract (concrete) of flowers of Jasminum sambac L. with cold methanol or liquid CO2 were compared. Direct extraction of flowers with liquid CO2 gave a relatively fat-free and superior product in 0.44% yield. It was found that the CO2 method of fractionation of pentane extract is a practical process providing an organoleptically superior product, though the product is not totally free from waxy substances. (E,E)-α-Farnesene and (Z)-3-hexenyl benzoate, along with compounds like indole, methyl anthranilate and methyl jasmonate, responsible for high diffusivity of the jasmine fragrance, have been obtained with improved recoveries in the CO2 fractionated concrete. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700356
in The journal of essential oil research > Vol. 22 N° 5 (Septembre/Octobre 2010) . - pp. 398-406[article] Composition of absolutes of jasminum sambac L. flowers fractionated with liquid CO2 and methanol and comparison with liquid CO2 extract [texte imprimé] / P. K. Rout, Auteur ; S. N. Naik, Auteur ; Y. R. Rao, Auteur . - 2011 . - pp. 398-406.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 22 N° 5 (Septembre/Octobre 2010) . - pp. 398-406
Mots-clés : Jasminum sambac Oleaceae Liquid CO2 fractionation extract Concrete composition Absolute Linalool Benzyl acetate (E,E)-α -farnesene (Z)-3-hexenyl benzoate Index. décimale : 646 Résumé : Absolutes obtained by fractionation of the pentane extract (concrete) of flowers of Jasminum sambac L. with cold methanol or liquid CO2 were compared. Direct extraction of flowers with liquid CO2 gave a relatively fat-free and superior product in 0.44% yield. It was found that the CO2 method of fractionation of pentane extract is a practical process providing an organoleptically superior product, though the product is not totally free from waxy substances. (E,E)-α-Farnesene and (Z)-3-hexenyl benzoate, along with compounds like indole, methyl anthranilate and methyl jasmonate, responsible for high diffusivity of the jasmine fragrance, have been obtained with improved recoveries in the CO2 fractionated concrete. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700356 Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Essential oil composition of cymbopogon microstachys (Hook.) soenarke occurring in manipur / P. K. Rout in The journal of essential oil research, Vol. 17 N° 4 (Juillet-Août 2005)
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Titre : Essential oil composition of cymbopogon microstachys (Hook.) soenarke occurring in manipur Type de document : texte imprimé Auteurs : P. K. Rout, Auteur ; S. Sahoo, Auteur ; Y. R. Rao, Auteur Année de publication : 2006 Article en page(s) : pp. 358-360 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Cymbopogon microstachys Poaceae Essential oil composition (E)-methyl isoeugenol Résumé : The essential oil of Cymbopogon microstachys produced from wild plants collected in the foothills of Manipur was analyzed by GC and GC/MS. The results showed that the oil contained (E)-methyl isoeugenol (56.4–60.7%) as the major constituent. This is the first time that an oil of C. microstachys has been found with (E)-methyl isoeugenol as the major constituent. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698929#.UcL5amF2_n4
in The journal of essential oil research > Vol. 17 N° 4 (Juillet-Août 2005) . - pp. 358-360[article] Essential oil composition of cymbopogon microstachys (Hook.) soenarke occurring in manipur [texte imprimé] / P. K. Rout, Auteur ; S. Sahoo, Auteur ; Y. R. Rao, Auteur . - 2006 . - pp. 358-360.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 17 N° 4 (Juillet-Août 2005) . - pp. 358-360
Mots-clés : Cymbopogon microstachys Poaceae Essential oil composition (E)-methyl isoeugenol Résumé : The essential oil of Cymbopogon microstachys produced from wild plants collected in the foothills of Manipur was analyzed by GC and GC/MS. The results showed that the oil contained (E)-methyl isoeugenol (56.4–60.7%) as the major constituent. This is the first time that an oil of C. microstachys has been found with (E)-methyl isoeugenol as the major constituent. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698929#.UcL5amF2_n4 Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire