PMID: 11312792Apr 21, 2001Paper

Free and bound volatile composition and characterization of some glucoconjugates as aroma precursors in melón de olor fruit pulp (Sicana odorifera)

Journal of Agricultural and Food Chemistry
F ParadaY Fujimoto

Abstract

Free and glycosidically bound volatiles obtained from the fruit pulp of Sicana odorifera by liquid-liquid extraction and by chromatography, followed by enzymatic hydrolysis with Rohapect D5L, respectively, were analyzed by capillary gas chromatography (HRGC), HRGC-mass spectrometry (HRGC-MS), and HRGC-Olfatometry (HRGC-O) analyses. A total of 37 free volatiles was detected, with the major components being 3-methyl-2-butanol, 3-hydroxy-2-butanone, ethyl 3-hydroxybutanoate, and (Z)-3-hexenol. Among the 22 detected glycosidically bound compounds, 4-hydroxybenzyl methyl ether, 4-hydroxybenzyl alcohol, and 2-phenylethanol were found to be the major constituents. Additionally, two glucoconjugates were isolated in pure form by multilayer coil countercurrent chromatography (MLCCC) of the glycosidic extrac and further purification. Their structures were elucidated by MS and NMR analyses to be the novel [4-(beta-D-glucopyranosyloxy)benzyl] 2,3-dihydroxy-3-methylbutanoate 2, and the known 4-(beta-D-glucopyranosyloxy)benzyl alcohol 1. Compounds 1 and 2 are precursors of 4-hydroxybenzyl alcohol, one of the major volatiles generated by enzymatic hydrolysis of the glycosidic fraction.

References

Nov 24, 1999·Journal of Agricultural and Food Chemistry·C OsorioY Fujimoto

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Citations

Feb 7, 2002·Phytochemistry·Humberto MayorgaPeter Winterhalter
Nov 21, 2015·Journal of Agricultural and Food Chemistry·Georgia LytraJean-Christophe Barbe
Dec 14, 2006·The Plant Journal : for Cell and Molecular Biology·John C D'AuriaJonathan Gershenzon
Sep 8, 2004·Fitoterapia·Sayaka NakanoCarmenza Duque
Dec 14, 2017·Journal of Natural Medicines·Toshio MorikawaKiyofumi Ninomiya
Jan 4, 2019·Natural Product Research·Xiao-Qian ZhangLi-Ping Tian
Jan 20, 2011·Journal of Agricultural and Food Chemistry·Katherine JaramilloCoralia Osorio
Apr 20, 2001·Journal of Agricultural and Food Chemistry·H MayorgaC Duque

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