ANALYTICAL PYROLYSIS AND THERMALLY ASSISTED HYDROLYSIS-METHYLATION OF WINE TANNIN

被引：31

作者：

GALLETTI, GC

MODAFFERI, V

POIANA, M

BOCCHINI, P

机构：

[1] Istituto di Microbiologia e Tecnologia Agraria e Forestale, University of Reggio Calabria, I-89061 Gallina (Reggio Calabria)

[2] Centro di Studio per la Conservazione dei Foraggi, Consiglio Nazionale delle Ricerche, 40126 Bologna

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 1995年 / 43卷 / 07期

关键词：

PYROLYSIS GAS CHROMATOGRAPHY MASS SPECTROMETRY; WINE ANALYSIS; POLYPHENOL ANALYSIS; TANNIN ANALYSIS; PHENOLIC ANALYSIS; ION TRAP DETECTOR;

D O I：

10.1021/jf00055a020

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

Condensed tannins from nines produced in Calabria, Italy, were purified by gel filtration on Sephadex LH-20. Tannin samples were subjected to pyrolysis/gas chromatography/mass spectrometry (PY/GC/MS) and to thermally assisted hydrolysis-methylation/gas chromatography/mass spectrometry (THM/GC/MS), the latter in the presence of tetramethylammonium hydroxide. The tannin fragments produced by PY/GC/MS were identified and ascribed the B ring of the monomeric flavanoids. The methyl derivative of the A ring of the monomeric flavanoids was evident in the THM/GC/MS trace, along with permethylated derivatives of phenolic acids and fatty acids. Control wines and the corresponding samples aged in oak wood barrels were compared as to PY/GC/MS quantitative data of selected pyrolysis fragments.

引用

页码：1859 / 1863

页数：5

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