47种中草药提取物的体外抗菌活性筛选研究

目的:测定47种中草药的80 %乙醇提取物的体外抗菌活性。方法:对大肠埃希菌、铜绿假单胞菌进行抗生素药敏试验;制备47种中草药醇提物,采用常规琼脂扩散法进行体外抑菌试验。结果:47种中草药的醇提物中有11种对大肠埃希菌、铜绿假单胞菌和白色念珠菌有不同程度的抑制活性;其中尤以赤芍和石榴皮的醇提物抗耐药菌活性最高,赤芍醇提物对上述3种菌特别是耐药菌的抑制活性均较高,其最低抑菌浓度(MIC)分别为1 3、1 1、1 8mg/ml;石榴皮醇提物对上述3种菌的抑制活性也较高,其MIC分别为8 3、3 6、2 3mg/ml。结论:赤芍和石榴皮醇提物呈现广谱抗菌特性,且具有抗耐药菌作用。

Antimicrobial Activities Screening of 47 Traditional Chinese Herbal Medicine Extracts

OBJECTIVE:To determine the antimicrobial activity of alcoholic e xtracts of47traditional Chinese herbal medicines in vitro.METHODS:Antibiotic drug sensitive tests of Escherichia coli and Bacillus pyocyaneus were conducted,alˉcoholic extracts of47Chinese herbal medicines were prepared,which were subjected to bicteriostatic tests in vitro by agar spread routine method.RESULTS:Among the47traditonal Chinese herbal medicines alcoholic extracts,11of which did have antimicrobial activity against escherichia coli,pseudomonas aeruginosa and blastomyces albicans in different degree;among which,the antimicrobial activity of the alcoholic extracts of paeoniae radix and granatum to drug resistance bacteria were the highest,the alcoholic extracts of paeoniae radix showed strong inhibitory activities to the above3bacterium,especially to the resistant organisms with the minimum inhibitory concentrations(MIC)at1.3,1.1and1.8mg/ml respectively;The antimiˉcrobial activities of alchoholic extracts of granatum against the above3bacterium were also high with the MIC at8.3,3.6and2.3mg/ml respectively.CONCLUSION:The alcoholic extracts of paeoniae radix and granatum have broad spectrum of anˉtimicrobial activity and which have antimicrobial effect to drug resistance bacteria.