Reactions of polyphenoloxidase generated caftaric acid o-quinone with malvidin 3-O-glucoside

被引：58

作者：

SarniManchado, P

Cheynier, V

Moutounet, M

机构：

[1] I.N.R.A.-Inst. Produits de la Vigne, U. Polymeres Techniques Phys.-C., 34060 Montpellier cedex

来源：

PHYTOCHEMISTRY | 1997年 / 45卷 / 07期

关键词：

anthocyanins; degradation; oxidation; phenolic compounds; polyphenol oxidase; caffeoyl tartaric acid o-quinone;

D O I：

10.1016/S0031-9422(97)00190-8

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Polyphenol oxidase (PPO)-catalysed oxidation of solutions containing malvidin 3-O-glucoside and caftaric acid was studied by HPLC and mass spectrometry. The reaction of the anthocyanin with o-quinones and the nature of the products formed were compared as two pH values. The oxidized solution contained, in addition to the precursors, coloured and colourless compounds which eluted between caftaric acid and malvidin 3-O-glucoside. Liquid chromotography. with ion spray mass spectrometry (LC-ISP-MS) indicated that they were adducts of malvidin 3-O-glucoside and caftaric acid, either in the flavylium or in the hemiacetal form. (C) 1997 Elsevier Science Ltd. All rights reserved.

引用

页码：1365 / 1369

页数：5

共 14 条

[1]

[Anonymous], POLYPHENOLIC PHENOME

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