醉马草提取物的抑菌特性研究

Study on Antimicrobial Activity of Achnatherum inebrians(Hance)Keng Extracts

用95%食用乙醇采用回流浸煮法提取醉马草各成分,提取物分为总生物碱和非生物碱两部分,总生物碱部分按极性大小又分4个部分。以此为供试液对大肠杆菌等6个菌种做抑菌谱、不同pH值下抑菌活性的变化和提取物热稳定性等实验。结果表明供试液对供试菌均有不同程度的抑制作用,得到的各供试液的最低抑菌浓度(MIC),提取物热稳定性比较好,各供试液不同pH值下的抑菌活性发生一定的变化。

The extracts fromAchnatherum inebrians （Hance）Keng with 95% edible-ethanol were used as antirnicrobial agents in this paper. Six species of bacteria including Echerichia coli etc were taken as test-bacteria. The results showed that the extracts fromAchnatherum inebrians （Hance）Keng have the best antibacterial effect on the tested six bacteria. With the six species of the bacteria, the antibacterial effects are obtained for the minimal inhibitory concentration（MIC） and the antibacterial effects（the diameter of the antibacterial circle）of the five materials from Achnatherum inebrians （Hance）Keng.