食品科学 ›› 2010, Vol. 31 ›› Issue (3): 132-135.doi: 10.7506/spkx1002-6300-201003030

• 基础研究 • 上一篇    下一篇

中国林蛙皮抗菌肽的提取纯化及抑菌活性检测

王战勇1,李 宁1,苏婷婷2   

  1. 1.辽宁石油化工大学环境与生物工程学院 2.辽宁石油化工大学化学与材料学院
  • 收稿日期:2009-03-05 出版日期:2010-02-01 发布日期:2010-12-29
  • 通讯作者: 王战勇 E-mail:dennistt@126.com

Purification and Anti-bacterial Activity Evaluation of Anti-bacterial Peptides from Skin of Rana chensinensis

WANG Zhan-yong1,LI Ning1,SU Ting-ting2   

  1. 1. School of Environmental and Biological Engineering, Liaoning Shihua University, Fushun 113001, China;
    2. School of Chemistry and Material Science, Liaoning Shihua University, Fushun 113001, China
  • Received:2009-03-05 Online:2010-02-01 Published:2010-12-29
  • Contact: WANG Zhan-yong E-mail:dennistt@126.com

摘要:

采用酸化甲醇法提取中国林蛙皮肤中的抗菌肽,并采用凝胶色谱的方法对提取物进行纯化。结果表明:采用Sephadex G-50 和Sephadex G-25 串联凝胶层析法获取的F2 组分,即纯化后的抗菌肽的抑菌率可达90% 以上。抗菌肽对革兰氏阴性菌和阳性菌以及真菌均有一定抑制效果。对各受试菌株的最小抑菌浓度(MIC)分别为:金黄色葡萄球菌和链球菌为0.2mg/mL;枯草芽孢杆菌和大肠杆菌为0.4mg/mL;蜡样芽孢杆菌为0.8mg/mL;白色念珠菌为1.2mg/mL;酿酒酵母和毛霉为1.5mg/mL;根霉为2.0mg/mL。

关键词: 中国林蛙, 抗菌肽, 纯化, 抑菌活性

Abstract:

Rana chensinensis skin was extracted using acidified methanol for preparing anti-bacterial peptides and the resulting crude extract was then purified by gel filtration chromatography. Purified anti-bacterial peptides were found to be rich in F2 fraction up to 90% by tandem Sephadex G-50 and G-25 column chromatography. The purified anti-bacterial peptides could effectively inhibit the growth of Gram-positive bacteria, Gram-negative bacteria and fungus. The minimum inhibitory concentrations (MIC) were 0.2 mg/mL against Staphylococcus aureus and Streptococcus, 0.4 mg/mL against Bacillus subtilis and Escherichia coli, 0.8 mg/mL against Bacillus cereus, 1.2 mg/mL against Candida albicans, 1.5 mg/mL against Saccharomyces cerevisia and Mucor, and 2.0 mg/mL against Rhizopu.

Key words: Rana chensinensis, anti-bacterial peptide, purification, anti-bacterial activity

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