论文部分内容阅读
人参果胶经分离、纯化获两种(SA、SB)酸性杂多糖。经醋酸纤维薄膜电泳、玻璃纤维纸电泳分别呈章一色斑。SA的组成以中性糖为主,其中半乳糖、阿拉伯糖、鼠李糖间摩尔比为4.7:2.6:1,半乳糖醛酸含量为26%。将SA先经部分酸水解,再经Smtch降解得到β-(1→3)-D-聚半乳糖。SB的组成以酸性糖为主,半乳糖醛酸含量为76%,半乳糖、阿拉伯糖、鼠李糖间的摩尔比为3.3:1.8:1。用部分酸水解方法,可从SB获得分子量小于2万的α-(1→4)-D-聚半乳糖醛酸。
Two kinds of (SA, SB) acidic heteropolysaccharides were isolated and purified from ginseng pectin. The acetate fiber membrane electrophoresis, glass fiber paper electrophoresis showed chapter one stain. The composition of SA is mainly neutral sugar, wherein the molar ratio of galactose, arabinose, and rhamnose is 4.7:2.6:1, and the galacturonic acid content is 26%. Partial acid hydrolysis of SA followed by degradation by Smtch yields β-(1→3)-D-galactose. The composition of SB is mainly acidic sugar, the galacturonic acid content is 76%, and the molar ratio between galactose, arabinose, and rhamnose is 3.3:1.8:1. With the partial acid hydrolysis method, α-(1→4)-D-galacturonic acid having a molecular weight of less than 20,000 can be obtained from SB.