【摘要】 为研究木犀草素的体外抗菌活性,本试验采用肉汤微量稀释法测定木犀草素对化脓隐秘杆菌、大肠埃希菌、沙门菌和链球菌的最小抑菌浓度(MIC),并测定亚抑菌浓度木犀草素对4种细菌生长曲线的影响。结果表明,木犀草素对化脓隐秘杆菌的抑制作用最强,MIC为0.078g/L;对沙门菌的抑制作用次之,MIC值为1.25g/L;对大肠埃希菌和链球菌的抑制作用相对较弱,MIC值均为2.5g/L。木犀草素对4种试验菌株的生长均具有抑制作用,且随浓度的升高其抑菌作用增强(P<0.05)。更多还原

【Abstract】 Broth microdilution method was hired to measure the minimum inhibitory concentrations(MICs)of luteolin against Trueperella pyogenes,Escherichia coli,Salmonella and Streptococcus in order to evaluate the antimicrobial activity of luteolin in vitro.Meanwhile,the bacteria growth curves in medium containing sub-inhibitory concentration of luteolin were measured in this test.The results indicated that Tureperella pyogenes was the most sensitive to luteolin with a MIC of0.078g/L than that of these strains;and Salmonella was also sensitive to luteolin(MIC:1.25g/L).However,The inhibitory effect of luteolin on Escherichia coli and Streptococcus is relatively weak,and shared the same MIC with 2.5g/L.Luteolin showed inhibitory effects on the growth curves of all the strains in this test at sub-inhibitory concentration,and the inhibitory effects on the growth curves increased with the concentration of luteolin(P<0.05).更多还原