食品科学 ›› 2010, Vol. 31 ›› Issue (19): 179-181.doi: 10.7506/spkx1002-6630-201019038

• 基础研究 • 上一篇    下一篇

南山楂叶黄酮抑制α - 葡萄糖苷酶和清除DPPH 自由基的作用

董华强1,甄畅迪1,张 毅2,李 梅1,刘富来1,黄剑波1   

  1. 1.佛山科学技术学院食品科学系
    2.华南理工大学轻工与食品学院
  • 收稿日期:2010-07-06 修回日期:2010-09-29 出版日期:2010-10-15 发布日期:2010-12-29
  • 通讯作者: 董华强 E-mail:huaqiangdong@163.com
  • 基金资助:

    广东省自然科学基金项目(8152800001000023)

Alpha-glucosidase Inhibiting Effect of DPPH free Radical Scavenging Activity of Flavonoid-rich Extract from Leaves of Crataegus cuneata Sieb. et Zucc

DONG Hua-qiang1,ZHEN Chang-di1,ZHANG Yi2,LI Mei1,LIU Fu-lai1,HUANG Jian-bo1   

  1. 1. Department of Food Science, Foshan University, Foshan 528231, China;2. College of Light Industry and Food Sciences,
    South China University of Technology, Guangzhou 510641, China
  • Received:2010-07-06 Revised:2010-09-29 Online:2010-10-15 Published:2010-12-29
  • Contact: DONG Hua-qiang E-mail:huaqiangdong@163.com

摘要:

目的:研究南山楂叶黄酮提取物(SZ)对α- 葡萄糖苷酶活性的抑制作用和抗氧化活性。方法:检测SZ 对来源于酵母菌的α- 葡萄糖苷酶活性抑制作用,并采用Lineweave-Burk 双倒数曲线研究其抑制机理;测定SZ对DPPH自由基的清除率,考察其抗氧化活性。结果:SZ 对α- 葡萄糖苷酶的抑制率可达到64.3%,属于非竞争性抑制;对DPPH 自由基的清除率可达52.8%,IC50 值为0.57mg/mL。结论:SZ 对α- 葡萄糖苷酶有较强的抑制作用和具有一定的抗氧化活性。

关键词: 南山楂叶, 黄酮, α- 葡萄糖苷酶, 抑制作用, 抗氧化

Abstract:

A flavonoid-rich extract obtained by ethyl acetate extraction from the 80% ethanol extract from the leaves of Crataegus cuneata Sieb. et Zucc was evaluated for its alpha-glucosidase inhibiting effect and DPPH free radical scavenging activity. The extract had an inhibitory effect on alpha-glucosidase derived from yeast, and the maximum inhibitory rate was up to 64.3%, and the inhibition was uncompetitive according to the Lineweaver-Burk plot. The maximum DPPH free radical scavenging rate of the extract was up to 52.8%, and the IC50 was 0.57 mg/mL. In conclusion, the extract had strong ability to inhibit yeast-derived alphaglucosidase and certain antioxidant activity.

Key words: leaves Crataegus cuneata Sieb. et Zucc, flavonoids, alpha-glucosidase, inhibiting effect, antioxidation

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