关键词: 枸杞子, 阿拉伯半乳糖聚糖糖蛋白(AGP), 微细构造

Abstract: To characterize the fine structure of the predominant arabinogalactan-protein (Cp-2-B) isolated from the fruit ofLycium chinense Mill, a periodate oxidation and Smith degradation were preformed, and a galactan (Cp-2-B-SD, Mw=18,000)was obtained. The result of methylation and GC-MS analysis suggested that Cp-2-B-SD had a typical comb-like structure: abackbone of (1→3) -galactosyl residues was in existence and ca. 30% of the galactosyl residues in the backbone had substituents.Protease enzymatic reaction and an immune reaction with the β- galactosyl Yariv reagent were then examined to characterize thecommon structure of Cp-2-B.

Key words: Lycium chinense Mill, arabinogalactan-protein, fine structure