OLIGOMERIC AND POLYMERIC PROCYANIDINS FROM GRAPE SEEDS
OLIGOMERIC AND POLYMERIC PROCYANIDINS FROM GRAPE SEEDS
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DOI：
10.1016/s0031-9422(00)89817-9
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发表时间：
1994-06-01
期刊：
影响因子：
3.8
通讯作者：
MOUTOUNET, M
中科院分区：
文献类型：
--
作者：
PRIEUR, C;RIGAUD, J;MOUTOUNET, M
从葡萄（葡萄属vinifera）种子中分离出五种单宁级分。硫代酸解释放的降解产物的HPLC分析表明，所有馏分组成的儿茶素，表儿茶素和表儿茶素没食子酸酯单位。表儿茶素是延伸链的主要成分。儿茶素是更丰富的终端单位比在扩展单位。随着M（r）的增加，没食子酰化单位的比例在13%~ 29%之间变化。平均聚合度范围为2.3至15.1（通过硫解）和2.4至16.7（通过GPC）进行了测定。
Five tannin fractions were isolated from grape (Vitis vinifera) seeds. HPLC analysis of the degradation products released by thioacidolysis showed that all fractions consisted of catechin, epicatechin and epicatechin gallate units. Epicatechin was the major component in the extended chain. Catechin was more abundant in terminal units than in extension units. The proportion of galloyllated units varied from 13% to 29% as the M(r) increased. Mean degrees of polymerization ranging from 2.3 to 15.1 (by thiolysis) and from 2.4 to 16.7 (by GPC) were determined.