灯芯草提取物的体外抑菌效果研究

Chang-ling LI, Fei LI, Jian SHEN

Journal of Huaihua University(2017)

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Abstract
以水、70%乙醇、乙酸乙酯和丙酮对灯芯草进行提取,采用药敏纸片法和二倍稀释法测定灯芯草提取物对金黄色葡萄球菌、大肠杆菌、粪肠球菌、枯草芽孢杆菌和变形杆菌的最低抑菌浓度(MIC).结果表明,灯芯草茎和根的70%乙醇提取物抑菌效果最佳,其最大抑菌圈直径分别为15.0 mm和19.5 mm.茎和根的70%乙醇提取物对粪肠球菌的MIC均为0.5 g/mL,对大肠杆菌和金黄色葡萄球菌的MIC均为0.25 g/mL.灯芯草提取物对革兰氏阳性和革兰氏阴性菌均有抑制作用,且对大肠杆菌、金黄色葡萄球菌和粪肠球菌的抑菌效果较明显;根的提取物比茎的抑菌效果更好.
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