丁祝林,赵晓蕾,张跃军

• 1:南京理工大学化工学院

摘要(Abstract)：

为了研究无机盐阳离子的抗菌性能及其作用机理,以大肠杆菌为受试菌,采用平皿计数、电位测定、红外分析、电镜观察等方法,考察了5种不同价态无机盐阳离子的抗菌性能,建立了作用机理模型。结果表明:无机盐的作用浓度、电荷浓度越大,离子半径越小,其抗菌效果越好。抗菌作用过程为:无机盐阳离子吸附到菌体表面发生电中和作用,同步引起细胞内外渗透压差,其中多价阳离子与表面官能团可发生络合反应,产生絮凝作用,剥除细胞壁外膜物质,使细胞壁受损;随后细胞内外的渗透压失去平衡,细胞壁结构塌陷;最终细胞代谢功能受损,导致菌体死亡。无机盐阳离子的抗菌效能是电中和作用、络合或交联反应、渗透压作用等共同作用的结果。

关键词(KeyWords)： 无机盐;阳离子价态;大肠杆菌;抗菌性能;作用机理

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 丁祝林,赵晓蕾,张跃军

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