紫草不同溶剂提取物抑菌活性研究  

Study on the antimicrobial activities of extracts from Amebia euchroma(Royle)Johnst with different solvents

作　　者：侯美珍[1] 韦红群[1] 潘英明[2] 

机构地区：[1]广西师范大学生命科学学院,广西桂林541004 [2]广西师范大学化学化工学院,广西桂林541004

出　　处：《食品工业科技》2006年第11期52-54,57,共4页Science and Technology of Food Industry

基　　金：国家自然科学基金(30460153)广西教育厅科研项目

摘　　要：采用滤纸片扩散法和混平板稀释法研究了紫草不同溶剂提取物的抑茵作用及温度对其抑菌活性的影响。结果表明,正丁醇、乙酸乙酯、石油醚、氯仿等四种溶剂提取物均具有较强的抑菌活性,对受试菌的MIC范围在1～2mg/mL之间。抑菌能力大小顺序为：乙酸乙酯提取物≥正丁醇提取物＞石油醚提取物＞氯仿提取物。四种提取物对细菌的抑菌能力均大于真菌,且它们的抑茵活性具有较好的热稳定性。The antimicrobial activities of extracts from Amebia euchroma （Royle）Johnst with different solvents and the effect of temperature on its antibacterial activities were studied by the methods of agar diffusion and macrodilution. The results showed that all of the extracts with ethyl acetate, normal butyl alcohol, petroleum ether and chloroform had strong inhibition effects on microorganisms, and the minimal inhibitory concentration（MIC）were between 1 and 2 mg/mL, The sensitivities of the four extracts to microbes were followed： ethyl acetate extract≥ normal butyl alcohol extract 〉 petroleum ether extract 〉 chloroform extract. Furthermore, the extracts had stronger inhibition effects on bacteria than on fungi and were stable under heating.

关 键 词：紫草 提取物 抑菌活性 

分 类 号：TS202.3[轻工技术与工程—食品科学]