食品科学 ›› 2007, Vol. 28 ›› Issue (2): 73-78.

• 基础研究 • 上一篇    下一篇

山茱萸中α-葡萄糖苷酶抑制活性因子的筛选(Ⅱ)

 马庆一, 陈丽华, 杨海延, 王庆玲   

  1. 郑州轻工业学院食品与生物工程学院; 郑州轻工业学院食品与生物工程学院 河南郑州450002; 河南郑州450002 平顶山学院化学与化工学院; 河南平顶山467000; 河南郑州450002;
  • 出版日期:2007-02-15 发布日期:2011-12-31

Screening of α-Glucosidase Inhibitors from Coruns officinalis (Ⅱ)

 MA  Qing-Yi, CHEN  Li-Hua, YANG  Hai-Yan, WANG  Qing-Ling   

  1. 1.College of Food and Biological Engineering, Zhengzhou Institute of Light Industry, Zhengzhou 450002, China; 2. College of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan 467000, China
  • Online:2007-02-15 Published:2011-12-31

摘要: 山茱萸皂甙和鞣质的酶抑制动力学反应结果表明,皂甙和鞣质对α-葡萄糖苷酶有良好的抑制活性,皂甙的IC50和Ki分别为0.482mg/ml和1.051mg/ml,而鞣质的IC50和Ki分别为0.220mg/ml和0.148mg/ml,皂甙对热稳定,属于非竞争性抑制剂,鞣质对热不稳定且属于竞争性抑制剂。

关键词: 山茱萸, &alpha, -葡萄糖苷酶抑制剂, 皂甙, 鞣质, 非竞争性, 竞争性

Abstract: In this experiment the activities of α-Glucosidase inhibitor of tannins and saponins from Cornus officinalis wereevaluated by using α-glucosidase activity inhibitory kinetics assay. The results showed that there is good inhibition of saponins. Its IC50 and Ki are 0.482mg/ml and1.051mg/ml respectively. It has a higher thermal stability. However, the inhibition of tannins is non-competitive. Its IC50 and Ki are 0.220mg/ml and 0.148mg/ml respectively. It has no thermal stability .

Key words: Cornus officinalis; &alpha, -glucosidase inhibitor; saponins; tannins; non-competitive; competitive;