摘要
研究桑叶水提浸膏对五种食品常见污染菌的抑菌作用。通过滤纸片扩散法测定其相对抑菌活性。结果表明,桑叶水提浸膏对金黄色葡萄球菌有较强的抑制作用,对大肠杆菌作用次之,对枯草芽孢杆菌、荧光假单孢杆菌、巨大芽孢杆菌抑菌效果较差。桑叶水提浸膏对金黄色葡萄球菌的最小抑菌浓度是5%,抑菌作用受pH和温度的影响较大,在酸性条件下抑菌效果较好,低于60℃处理样品对抑菌效果影响不大,但高于80℃处理,样品抑菌活性明显降低。
To study the antibacteria effect of aqueous extract of mulberry leaves on 5 kinds of food familiar pollution bacterium. Determining the relative antibacteria activity through the method of filter paper pervasion. The result showed that aqueous extract of mulberry leaves had stronger antibacteria activities against staphylococcus aureus than escherichia coli, contrarily did worse effect on bacillussubtilis, pseudomonas fluorescence and bacillus megaterium. The minimal inhibitory concentration of aqueous extract of mulberry leaves was 5 %, the variation of pH and temperature significantly affected the activities, aqueous extract of mulberry had better antibacteria activities against staphylococcus aureus under acidic condition, and its antibacteria activities didn＇ t change much under 60℃, relatively declined obviously upwards of 80℃.
出处
《上海生物医学工程》
2007年第1期16-18,共3页
Shanghai Journal of Biomedical Engineering
关键词
桑叶水提浸膏
黄酮
金黄色葡萄球菌
大肠杆菌
抑菌作用
Aqueous extract of Mulberry leaves
Flavonoid
Staphylococcus aureus
Escherichia coli
Antibacte-ia effect
