A LIQUID-CHROMATOGRAPHY MASS-SPECTROMETRY STUDY OF A BLACK TEA LIQUOR USING THE PLASMASPRAY INTERFACE

被引：19

作者：

BAILEY, RG ^{[1
]}

NURSTEN, HE ^{[1
]}

MCDOWELL, I ^{[1
]}

机构：

[1] NAT RESOURCES INST,CHATHAM ME4 4TB,KENT,ENGLAND

来源：

JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE | 1994年 / 66卷 / 02期

关键词：

BLACK TEA; MASS SPECTROMETRY; LCMS; PLASMASPRAY; FLAVANOLS; FLAVANOL GALLATES; CHLOROGENIC ACIDS; 4-COUMARYLQUINIC ACIDS;

D O I：

10.1002/jsfa.2740660214

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

This paper describes the application of liquid chromatography-mass spectrometry to the analysis of a black tea liquor, and shows that much useful information can be obtained without sample pretreatment. A tea liquor was applied to a wide-pore high-performance liquid-chromatography column connected to a mass spectrometer by a VG Plasmaspray interface. Pseudo-molecular ions were obtained from the flavanols, flavanol gallates, chlorogenic acids, 4-coumarylquinic acids, and caffeine, but the flavonol glycosides were extensively fragmented by the interface. Fragments were obtained from unresolved polymer that supported its previous designation as a flavanol polymer.

引用

页码：203 / 208

页数：6

共 30 条

[11] FLAVAN DERIVATIVES .25. MASS SPECTRA OF 3-HYDROXYFLAVANONES FLAVAN-3-OLS AND FLAVAN-3,4-DIOLS [J].