普洱茶提取物对金黄色葡萄球菌的影响
Effect of Pu'er tea extracts onStaphylococcus aureus
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摘要:为考察不同溶剂普洱茶提取物的抑菌效应,以金黄色葡萄球菌( S.aureus)为供试菌,采用滤纸片扩散法分别探讨普洱茶水提取物、75%乙醇提取物和95%乙醇提取物的抑菌效果、最小抑菌浓度( MIC)和最低杀菌浓度( MBC).研究结果表明:普洱茶提取物浓度在4~20 mg/mL范围内对 S.aureus均有较强的抑制效应,且抑制效果与浓度呈正相关.3种提取物中95%乙醇提取物的抑菌效果最佳,其 MIC与 MBC均为0.63 mg/mL.Abstract:To investigate the inhibition effect of Pu'er tea extract,the Staphylococcus aureus(S.aureus)was used as test bacteria.The inhibition effects of Pu'er tea extract from water,75% ethanol and 95% ethanol on minimal inhibitory concentration ( MIC) and minimum bactericidal concentration ( MBC) were studied by paper diffusion methods.The results indicated that the Pu'er tea extract concentration within the range of 4~20 mg/mL had a strong inhibitory effect against S.aureusand the inhibitory effect increased with the concentration.95% ethanol extract on S.aureusinhibitory effect was more obvious,and both its MIC and MBC were 0.63 mg/mL.
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