Determination of site specific D/H isotope ratios of glycerol from different sources by 2H-NMR spectroscopy

被引：10

作者：

Hermann, A ^{[1
]}

机构：

[1] Chem Untersuchungsamt, D-67346 Speyer, Germany

来源：

ZEITSCHRIFT FUR LEBENSMITTEL-UNTERSUCHUNG UND-FORSCHUNG A-FOOD RESEARCH AND TECHNOLOGY | 1999年 / 208卷 / 03期

关键词：

deuterium nuclear magnetic resonance spectroscopy; glycerol; origin assignment;

D O I：

10.1007/s002170050401

中图分类号：

TS2 [食品工业];

学科分类号：

0832 [食品科学与工程];

摘要：

A method was developed for the preparation of glycerol from wines and from naturally occuring lipids. In addition, the D/H isotopic ratios of glycerol from these sources was determined using site specific natural isotopic fractionation. Glycerol from four different sources was examined: glycerol isolated from vegetable oils and animal fats, glycerol obtained by chemical synthesis and glycerol which is a byproduct of the alcoholic fermentation of grape musts. Depending on the-origin of the glycerol, different isotopic ratios were found; these can be used for the detection of adulterated food or as proof-of the authenticity of a given product, such as wine.

引用

页码：194 / 197

页数：4

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[2]

Hupf H, 1997, DEUT LEBENSM-RUNDSCH, V93, P10

[3]

Lampe U, 1997, DEUT LEBENSM-RUNDSCH, V93, P103

[4]

DEUTERIUM TRANSFER IN THE BIOCONVERSION OF GLUCOSE TO ETHANOL STUDIED BY SPECIFIC ISOTOPE LABELING AT THE NATURAL ABUNDANCE LEVEL [J].