ISOLATION AND CHARACTERIZATION OF THE PHYSARUM-POLYCEPHALUM EXTRACELLULAR POLYSACCHARIDES

被引：3

作者：

SPERL, GT

机构：

[1] NutraSweet Research and Development, The NutraSweet Co., Mt. Prospect, IL 60056

来源：

FOOD BIOTECHNOLOGY | 1990年 / 4卷 / 02期

关键词：

D O I：

10.1080/08905439009549781

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The extracellular polysaccharide formed by Physarum polycephalum during spherulation was produced by fermentation. Both cell yields and polysaccharide formation were adversely affected by the presence of ambient incident light. Crude polysaccharide was fractionated with acetone into two fractions (I. II). Fraction I was viscous and contained 3.5% sulfated and 0.5% phosohorylated sugar residues. The non-viscous Fraction II contained 0.4% sulfated and 22% phosphorylated sugar residues. Fraction II formed gels at pH=8.5 with calcium, magnesium, iron and zinc ions. Fraction I and unfractioned polysaccharide did not form gels under any conditions tested. Copyright © 1990 by Marcel Dekker, Inc.

引用

页码：663 / 668

页数：6

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