辣椒提取液的抑菌活性分析

Antimicrobial activities of Capsicum frutescens L. extract

用辣椒的乙醇提取液对12种常见的模式致病菌株进行体外抑菌试验,结果表明,该提取液对细菌、霉菌和酵母菌均表现出一定的抑菌作用,其抑菌效果随浓度的增大而增强。其中提取液对葡萄牙假丝酵母的抑菌效果最明显,对根癌土壤杆菌抑菌效果最差。此外,同一浓度提取物对不同菌株的抑菌作用不同,其抑菌效力对菌种具有选择性,并且其抑制真菌的效果明显强于细菌。HPLC分析表明,辣椒提取液中的主要化学成分为辣椒素,其含量为0.132mg/mL。

The research studied antimicrobial activities of ethanol extract of Capsicum frutescens L. against twelve kinds of microorganisms. The results revealed that the extract had effective antimicrobial activities against the bacteria, the mold and yeast tested, and the higher the concentration of the extract was, the best the antimicrobial effect was. Moreover, the antimicrobial activity of the extract against Candida lusitaniae was the highest and against Agrobacterium tumefaciens was the lowest. The results also showed that the inhibitory effects against different microorganisms were different in the same concentration. In addition, the extract had the selective antimicrobial activities, and the inhibitory effects against the fungi were better than the bacteria. The determination of activated compounds in Capsicum frutescens L.extract was studied by means of high performance liquid chromatography （HPLC）. The result showed that was key chemical component in capsicum and the content of capsaicin in capsicum extract was 0.132mg/mL.