期刊论文

中文

安徽农业大学学报

1672-352X

2008

35

2

239-242

10.13610/j.cnki.1672-352x.2008.02.014

湖南省高等学校科技研究项目（06C412）资助.

本校为第一机构

采用滤纸片法和试管二倍稀释法研究茶叶提取物、二氢杨梅素对细菌、酵母和霉菌的抑菌活性,包括茶叶提取物、二氢杨梅素的最低抑菌浓度(MIC)以及茶叶提取物与二氢杨梅素的质量浓度、pH值、温度对其抑菌活性的影响.结果表明,茶叶提取物和二氢杨梅素对细菌均有较强的抑菌活性,对供试酵母和霉菌的抑制效果不明显.茶叶提取物对细菌的最低抑菌浓度不超过10 g·L~(-1),在中性或弱碱性环境中比在强碱性环境中的抑菌活性强,二氢杨梅素对细菌的最低抑菌浓度不超过1.76 g·L~(-1),在酸性或弱碱性环境中比在中性和强碱性环境下的抑菌活性更强.

The antimicrobial activities of tea-extract and dihydromyricetin were studied by filtering paper method and tube double dilution method. The study included the MIC of tea-extract and dihydromyricetin and influence of other factors, i. e ： the concentration,pH, temperature on the antimicrobial activities of tea-extract and dihydromyricetin. The results showed that tea-extract and dihydromyricetin had strong inhibition on bacteria activities but no distinct inhibition on yeast and mold. The minimum antimicrobial concentration of tea-extract was ...