天然产物研究与开发 ›› 2011, Vol. 23 ›› Issue (5): 853-856.

• 研究简报 • 上一篇    下一篇

白皮锦鸡儿黄酮醇类化合物及其抗菌和抗氧化活性(英文)

高海峰1,2,郑兵兵2,王蓟花2,单体江2,赵思峰1,周立刚2*   

  1. 1石河子大学农学院,石河子 832003;2中国农业大学农学与生物技术学院,北京 100193
  • 收稿日期:2011-04-25 出版日期:2011-10-25 发布日期:2011-09-26

Flavonol Derivatives from Caragana leucophloea and Their Antimicrobial and Antioxidant Activities

GAO Hai-feng1,2, ZHENG Bing-bing2, WANG Ji-hua2, SHAN Ti-jiang2, ZHAO Si-feng1, ZHOU Li-gang2*   

  1. 1College of Agronomy, Shihezi University, Shihezi 832003, China; 2College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
  • Received:2011-04-25 Online:2011-10-25 Published:2011-09-26
  • Supported by:

    This work was co-financed by the grants from the Hi-Tech R&D Program of China (2011AA10A202), and the Special Fund for Agro-Scientific Research in the Public Interest of China (nyhyzx07-022 and 200903052).

摘要: 从豆科植物白皮锦鸡儿(Caragana leucophloea Pojark.)地上部分分离到3个黄酮醇类化合物,经理化和波谱分析鉴定为3-O-甲基山奈酚(1)、3-O-甲基槲皮素(2)和槲皮素(3)。活性测定表明,1表现出较强的抗细菌活性,对大肠杆菌和番茄疮痂病菌的半抑制浓度分别为9.00 μg/mL和7.42 μg/mL,最低抑制浓度均为12.5 μg/mL;而23则表现出较强的抗氧化活性,对DPPH还原的半抑制浓度分别为14.39 μg/mL和13.64 μg/mL;对β-胡萝卜素-亚油酸氧化的半抑制浓度分别为10.26 μg/mL和9.87 μg/mL。上述黄酮醇类化合物均为首次从白皮锦鸡儿中分离得到。

关键词: 豆科, 白皮锦鸡儿, 黄酮醇类化合物, 抗菌活性, 抗氧化活性

Abstract: Three flavonol derivatives have been isolated from the aerial parts of Caragana leucophloea Pojark. (Leguminosae). By means of physicochemical and spectrometric analysis, they were identified as 3-O-methylkaempferol (1), 3-O-methylquercetin (2), and quercetin (3). Among them, 1 exhibited the strongest antibacterial activity with its median inhibitory concentration (IC50) values on Escherichia coli and Ralstonia solanacearum as 9.00 μg/mL and 7.42 μg/mL, respectively, and minimum inhibitory concentration (MIC) values on these two bacteria equally as 12.5 μg/mL. Either 2 or 3 showed stronger antioxidant activity than 1. The IC50 values of 2 and 3 on DPPH reduction were 14.39 μg/mL and 13.64 μg/mL, respectively, and those on β-carotene-linoleic acid oxidation were 10.26 μg/mL and 9.87 μg/mL, respectively. These flavonol derivatives were isolated from this plant species for the first time.

Key words: Leguminosae, Caragana leucophloea, flavonol derivatives, antimicrobial activity, antioxidant activity

中图分类号: 

Q946.8 S541