生物加工过程2011，Vol.9Issue(3)：52-56,5.DOI:10.3969/j.issn.1672-3678.2011.03.011
AgNO3对大肠杆菌和金黄色葡萄球菌的抗菌作用及机制
Antimicrobial activity and mechanism of silver nitrate on Escherichia coli and Staphylococcus aureus
摘要
Abstract
Using Escherichia coli and Staphylococcus aureus as model strains, the antibacterial effect and the mechanism of silver nitrate were investigated. Experimental results indicated that the silver nitrate of 2. 891 mg/mL could inhibit completely the growth of 106cfu/mL cells in liquid LB medium, and that silver nitrate prolonged the lag phase of E. coli and S. aureus, the higher the concentration, the longer the lag phase. In addition, silver nitrate had a marked effect on the dehydrogenase activity of E. coli and S.aureus, the dehydrogenase activity decreased as the concentration increased. The surface hydrophobicity of bacterial cells all had a decline to some extent followed the solution of silver nitrate worked on the bacteria, and the higher the concentration, the more its effect. The descending degree in E. coli was larger than that in S. aureus.关键词
AgNO3/大肠杆菌/金黄色葡萄球菌Key words
silver nitrate/ Escherichia coli / Staphylococcus aureus分类
生物科学引用本文复制引用
赵清风,陈介南,张林,张伟涛,何刚..AgNO3对大肠杆菌和金黄色葡萄球菌的抗菌作用及机制[J].生物加工过程,2011,9(3):52-56,5.基金项目
"十一五"国家科技支撑计划资助项目(2006BAD07A07-08) （2006BAD07A07-08）
