[article]
| Titre : |
Free and glycosidically bound volatiles in guava leaves (Psidium guajava L.) palmira ICA-I cultivar |
| Type de document : |
texte imprimé |
| Auteurs : |
Mady García, Auteur ; Clara E. Quijano, Auteur ; Jorge A. Pino, Auteur |
| Article en page(s) : |
pp. 131-134 |
| Note générale : |
Génie Chimique |
| Langues : |
Anglais (eng) |
| Mots-clés : |
Guava leaves Psidium guajava Myrtaceae Glycosidically bound volatiles |
| Index. décimale : |
646 |
| Résumé : |
Free and glycosidically bound volatiles obtained from the guava leaves (Psidium guajava L.) by liquid-liquid extraction and by chromatography, followed by enzymatic hydrolysis with non-selective pectinase respectively, were analyzed by capillary GC and GC/MS analyses.
A total of 39 free volatiles were detected (total amount of 1328 mg/ kg), with the major components being α-copaene, β-caryophyllene, and cadina-1,4-diene.
Among the 47 detected glycosidically bound compounds (total amount of 7050 mg/kg), hexanol, benzyl alcohol, and (E)-3-hexenoic acid were found to be the major constituents.
In aroma evaluation, the free volatile fraction showed a guava leaf-like aroma whereas the bound fraction was odorless.
However, the characteristic herbaceous-green-fatty aroma was noted in the bound fraction after enzymatic hydrolysis.
Upon the combination of the free and hydrolyzed bound fractions, a strongly fresh, guava leaf-like aroma was perceived. |
| DEWEY : |
665 |
| ISSN : |
1041-2905 |
| En ligne : |
http://www.jeoronline.com/archive/detail/42#top |
in The journal of essential oil research > Vol. 21 N° 2+ supplément vol.20 (Mars/Avril 2009+ supplément 2008) . - pp. 131-134
[article] Free and glycosidically bound volatiles in guava leaves (Psidium guajava L.) palmira ICA-I cultivar [texte imprimé] / Mady García, Auteur ; Clara E. Quijano, Auteur ; Jorge A. Pino, Auteur . - pp. 131-134. Génie Chimique Langues : Anglais ( eng) in The journal of essential oil research > Vol. 21 N° 2+ supplément vol.20 (Mars/Avril 2009+ supplément 2008) . - pp. 131-134
| Mots-clés : |
Guava leaves Psidium guajava Myrtaceae Glycosidically bound volatiles |
| Index. décimale : |
646 |
| Résumé : |
Free and glycosidically bound volatiles obtained from the guava leaves (Psidium guajava L.) by liquid-liquid extraction and by chromatography, followed by enzymatic hydrolysis with non-selective pectinase respectively, were analyzed by capillary GC and GC/MS analyses.
A total of 39 free volatiles were detected (total amount of 1328 mg/ kg), with the major components being α-copaene, β-caryophyllene, and cadina-1,4-diene.
Among the 47 detected glycosidically bound compounds (total amount of 7050 mg/kg), hexanol, benzyl alcohol, and (E)-3-hexenoic acid were found to be the major constituents.
In aroma evaluation, the free volatile fraction showed a guava leaf-like aroma whereas the bound fraction was odorless.
However, the characteristic herbaceous-green-fatty aroma was noted in the bound fraction after enzymatic hydrolysis.
Upon the combination of the free and hydrolyzed bound fractions, a strongly fresh, guava leaf-like aroma was perceived. |
| DEWEY : |
665 |
| ISSN : |
1041-2905 |
| En ligne : |
http://www.jeoronline.com/archive/detail/42#top |
|
Free and glycosidically bound volatiles in guava leaves (Psidium guajava L.) palmira ICA-I cultivar in The journal of essential oil research, Vol. 21 N° 2+ supplément vol.20 (Mars/Avril 2009+ supplément 2008)
