天然产物研究与开发 ›› 2011, Vol. 23 ›› Issue (4): 734-738.

• 开发研究 • 上一篇    下一篇

山鸡椒植物源抑菌成分的筛选研究

殷帅文*,朱 峰,刘丽萍,陈春霞,高小燕,党兵涛,何旭梅   

  1. 井冈山大学生命科学学院,吉安 343009
  • 收稿日期:2010-02-24 出版日期:2011-08-25 发布日期:2011-09-13
  • 基金资助:

    江西省自然科学基金(2007GQN1687),江西省教育厅项目(赣教技字[2007]327号)

Screening Antifungal Component from Litsea cubeba

YIN Shuai-wen*, ZHU Feng, LIU Li-ping, CHEN Chun-xia, GAO Xiao-yan, DANG Bing-tao, HE Xu-mei   

  1. School of life sciences, Jinggangshan University, Ji′an 343009, China
  • Received:2010-02-24 Online:2011-08-25 Published:2011-09-13

摘要: 以山鸡椒为植物材料,以活性追踪的方法测定了不同组分对几种植物病原菌的抑制活性,并从中分离纯化出一种有效抗菌物质L1。实验结果表明:粗提物不同萃取相中,乙酸乙酯相的抑制作用最好,其对杨树溃疡病菌和苹果霉心病菌抑制率达到75%以上;乙酸乙酯相各个组分对几种植物病原真菌均有一定的抑制活性,其中组分6和组分7抑菌效果强,组分6对苹果霉心病菌抑制率达到100%,组分7对番茄灰霉病菌抑制率达到100%;而对抑菌活性物质L1的抑菌活性研究中,随着L1浓度逐渐升高,对几种病原菌的抑制作用也依次增强,尤其是对苹果霉心病菌的抑制效果更加明显,在供试浓度为0.1 mg/mL时,抑制率达到100%;活性成分L1最终通过波谱学方法和文献对比确定为5,8-二羟基-6,7-二甲氧基黄酮。

关键词: 山鸡椒, 抑菌活性, 筛选

Abstract: The bioactivity-guided screening of different fractions of Litsea cubeba extract was tested with several kings of fungi which result in an antifungal compound L1. The results showed all fractions exhibited inhibitory action on tested different fungi, and the ethyl acetate soluble fractions showed more significant inhibition than other soluble fractions isolated from ethanol extracts to Dothiorella gregaria and Trichoticum roseum. Fractions 6 and 7 of ethyl acetate soluble fractions isolated from ethanol extracts showed stronger antifungal bioactivity than others. The inhibiting effect on tested fungi was enhancing as the concentration of compound L1 rising. And L1 showed 100% inhibition ratio to Trichoticum roseum at the concentration of 0.1 mg/mL. The structures of L1 was identified as 5,8-dihydroxy-6,7-dimethoxyflavone on the basis of extensive spectral analysis and comparison with the literature.

Key words: Litsea cubeba, antifungal activity, screening

中图分类号: 

Q946.33