The Structure of the Carbohydrate Moiety of an Acidic Polysaccharide Produced by Aureobasidium sp. K-1
The Structure of the Carbohydrate Moiety of an Acidic Polysaccharide Produced by Aureobasidium sp. K-1
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Aureobasidium sp. 产生的酸性多糖的碳水化合物部分的结构。
DOI：
10.1271/bbb1961.47.1167
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
Y. Tsujisaka
中科院分区：
文献类型：
--
作者：
N. Hamada;Y. Tsujisaka
从Aureobasidium sp. K-1的发酵液中分离得到一种酸性多糖。多糖由葡萄糖和磺基乙酸组成。葡聚糖部分被外切-β-1，3-葡聚糖酶水解，得到葡萄糖和龙胆二糖（摩尔比，约100）。1：3）。甲基化葡聚糖经酸水解产生2，3，4，6-四-O-甲基-、2，4，6-三-O-甲基-和2，4-二-O-甲基-d-葡萄糖（摩尔比为2.6：1.0：2.7）以及少量的2，3，6-三-O-甲基-d-葡萄糖。史密斯降解的葡聚糖部分产生葡萄糖，甘油和甘油（摩尔比，4：3.1：痕量）。根据这些结果，表明葡聚糖由β-1，3-连接的葡萄糖残基的主链组成，所述主链含有通过β-1，6-键连接的葡萄糖残基的单个分支，主链中大约每四个葡萄糖残基中有三个。
An acidic polysaccharide was isolated from the culture broth of Aureobasidium sp. K-1. The polysaccharide was composed of d-glucose and sulfoacetic acid. The glucan moiety was hydrolyzed by exo-β-1,3-glucanase to give glucose and gentiobiose (molar ratio, ca. 1: 3). The methylated glucan yielded on acid hydrolysis 2,3,4,6-tetra-O-methyl-, 2,4,6-tri-O-methyl- and 2,4-di-O-methyl-d-glucose (molar ratio, 2.6:1.0:2.7) together with small amounts of 2,3,6-tri-O-methyl-d-glucose. Smith degradation of the glucan moiety yielded glucose, glycerol and erythritol (molar ratio, 4:3.1 : trace). From these results, it was suggested that the glucan consists of a backbone of β-1,3-linked glucose residues containing single branches of glucose residues joined by β-1,6-linkages, roughly three out of every four glucose residues in the backbone.