期刊
CARBOHYDRATE POLYMERS
卷 84, 期 3, 页码 1075-1083出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2010.12.071
关键词
Wolfberry; Goji berries; Lycium barbarum; Cell wall polysaccharides; Arabinogalactan-proteins
Arabinogalactan-proteins (AGPs) were isolated from Wolfberry fruit (Lycium barbarum) and purified by anion-exchange chromatography and precipitation with Yariv reagent. Linkage and NMR analysis established the structure of Wolfberry AGP as typical of AGP reported from other sources. The data were consistent with a backbone of (1 -> 3)-linked beta-D-galactopyranosyl residues, many of which were substituted at O-6 with side chains of mainly 5-substituted alpha-L-arabinofuranosyl residues, terminated with alpha-(and beta-)L-arabinofuranosyl, alpha-L-rhamnopyranosyl and beta-D-glucopyranosyluronic acid residues. An unusual structural feature of the AGP was the occurrence of 4-substituted beta-D-glucopyranosyluronic acid residues in the side chains. The AGP, which had a MW average of between 50 and 60 kDa, displayed heterogeneity with regard to both galactose/arabinose ratio and degree of branching. Protein accounted for similar to 6% of the AGP and was rich in hydroxyproline. Evidence for an interaction between some of the AGP and hydrophobic moieties is presented. (C) 2011 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据