皂荚中天然防腐成分的防腐作用研究

目的?研究天然植物皂荚的防腐抑菌作用。方法?牛津杯法测定皂荚提取液（水提液、醇提液、复合液）的抑菌效力、稀释法测定皂荚提取液最低抑菌浓度（MIC）、开放条件下测定皂荚粉末的防腐效用。结果?皂荚提取液对白色念珠菌、黑曲霉菌位形成抑菌圈，但对标准株金黄色葡萄球菌、枯草芽胞杆菌、大肠埃希菌均形成大小不等的抑菌圈。皂荚水提液、复合液对上述3种细菌的MIC分别为:125、62.5、62.5mg／mL；醇提液的MIC分别为:250、125、125mg／mL。开放条件下实验结果表明皂荚具有较好的防腐作用。结论?皂荚对多种细菌具有较强的抑菌作用，可以做为天然防腐剂加以综合开发和利用。 

Antisepsis of Natural Compositions in Gleditsia sinensis

OBJECTIVE To study antisepsis and bacteriostasis of natural Gleditsia sinensis Lam.METHODS Oxford plate assay system was adopted to determine bacteriostasis of extract solutions including water extract,alcohol extract and complex liquid of Gleditsia sinensis Lam.and dilution method for MIC.Antisepsis of Gleditsia sinensis Lam.powder was tested in the open air.RESULTS Clear inhibition zones were found in the extract solution with candia albicans and aspergillus niger,while different sized inhibition zones ap...