[疯草（黄花棘豆（Pallas）DC）种子的半乳甘露聚糖]

[Galactomannan of the locoweed (Oxytropis lanata (Pallas) DC) seeds].

作者信息

Olennikov D N, Rokhin A V

出版信息

Prikl Biokhim Mikrobiol. 2010 Jul-Aug;46(4):486-90.

PMID:20873176

Abstract

Galactomannan with a molecular weight of 1976 kDa was isolated by hot water extraction from the locoweed (Oxytropis lanata (Pallas) DC) seeds (yield, 3.68% of the seed weight); its solutions display high viscosity: [eta] = 1697.7 ml/g and optical activity [alpha]D + 76.8 degrees. The polysaccharide consists of mannose and galactose residues at a molar ratio of 1.36 : 1. The backbone of galactomannan macromolecule is formed by 1,4-beta-D-mannopyranose residues, 73.5% of which are substituted with single alpha-D-galactopyranose residues at C-6.

摘要

通过热水提取法从疯草（黄花棘豆（Pallas）DC）种子中分离出分子量为1976 kDa的半乳甘露聚糖（产量为种子重量的3.68%）；其溶液表现出高粘度：特性粘度[η]=1697.7 ml/g，旋光度[α]D + 76.8度。该多糖由甘露糖和半乳糖残基按摩尔比1.36 : 1组成。半乳甘露聚糖大分子的主链由1,4-β-D-甘露吡喃糖残基构成，其中73.5%在C-6位被单个α-D-半乳吡喃糖残基取代。