食品科学 ›› 2011, Vol. 32 ›› Issue (3 ): 112-116.doi: 10.7506/spkx1002-6630-201103027

• 基础研究 • 上一篇    下一篇

桑叶多糖的分离纯化及对α - 葡萄糖苷酶的抑制活性

罗晶洁,王尉,曹学丽   

  1. 北京工商大学化学与环境工程学院,北京市植物资源研究开发重点实验室,北京 100048
  • 收稿日期:2010-06-03 修回日期:2011-01-10 出版日期:2011-02-15 发布日期:2011-01-13
  • 通讯作者: 曹学丽 E-mail:caoxl@th.btbu.edu.cn

Isolation, Purification and Anti-α-Glucosidase Activity of Polysaccharides from Mulberry Leaves

LUO Jing-jie,WANG Wei,CAO Xue-li   

  1. Beijing Key Laboratory of Plant Resources Research and Development, College of Chemical and Environmental Engineering,
    Beijing Technology and Business University, Beijing 100048, China
  • Received:2010-06-03 Revised:2011-01-10 Online:2011-02-15 Published:2011-01-13

摘要: 利用Sephadex-G50 从桑叶多糖中分离纯化得到两种不同多糖组分MLP1 和MLP2,经过高效凝胶色谱(GPC)分析表明,MLP1 的纯度为94.55%,重均相对分子质量MW 为11800,多分散性系数为1.25,MLP2 的纯度为96.64%,重均相对分子质量MW 为7630,多分散性系数为1.12。并利用α- 葡萄糖苷酶抑制活性体外筛选模型,对MLP1 和MLP2 进行活性研究,结果表明两个组分对α- 葡萄糖苷酶均具有较好的抑制活性。

关键词: 桑叶, 多糖, 分离纯化, 高效凝胶色谱, α- 葡萄糖苷酶, 抑制活性

Abstract: Two kinds of polysaccharides (MLP1 and MLP2) were isolated and purified from mulberry leaves by Sephadex- G50. The gel permeation chromatographic (GPC) analysis revealed that the purity, relative molecular weight and polydispersity of MLP1 was 94.55%, 11800 and 1.25; Meanwhile, the purity, relative molecular weight and polydispersity of MLP2 was 96.64%, 7630 and 1.12, respectively. Moreover, obvious inhibitory effects of MLP1 and MLP2 on α-glucosidase were observed.

Key words: mulberry leaves, polysaccharide, isolation and purification, gel permeation chromatographic (GPC), &alpha, -glucosidase, inhibitory activity

中图分类号: