饲料沸石抗菌剂体外抑菌活性的测定  

Determination on in Vitro Antimicrobial Properties of Feed Zeolite Antibacterial Agent

作　　者：单展展[1] 王秀丽[1] 张小虎[2] 陈南春[2,3] 杨正坤[1] 刘芳[2] 

机构地区：[1]桂林理工大学化学与生物工程学院,广西桂林541004 [2]桂林理工大学材料科学与工程学院,广西桂林541004 [3]桂林理工大学有色金属及材料加工新技术教育部重点实验室,广西桂林541004

出　　处：《湖北农业科学》2012年第15期3240-3242,共3页Hubei Agricultural Sciences

基　　金：国家自然科学基金项目(40862003);广西自然科学基金项目(0542012;05112001-2A5)

摘　　要：以广西产天然红辉沸石为原料制备A型分子筛,采用离子交换法制备二甲酸钾沸石抗菌剂。用X射线衍射仪(XRD)和扫描电镜对其进行表征分析,结果表明,A型沸石分子筛成功接枝吸附了二甲酸钾。采用菌落计数法对A型沸石抗菌剂的抑菌性能进行检测,表明最佳大肠杆菌(Escherichia coli)菌落计数吸光度值的范围为0.500～0.700,沸石抗菌剂对大肠杆菌的抑菌率达89.5%。Natural stellerite in Guangxi was used as raw material to prepare type-A zeolite; and the method of ion exchange was applied to prepare potassium diformate-loaded antibacterial agent which was characterized by XRD and SEM spectrometry. The results showed the type-A zeolite had good graft adsorption capacity to potassium diformate.Taking colony count method on type-A zeolite antimicrobial agent for antibacterial experiment, the results showed that the best absorbance value of Es- cherichia coli colony count was 0.500-0.700. The inhibition rate of antibacterial agent on E. coli could reach to 89.5%.

关 键 词：沸石抗菌剂 菌落计数法 大肠杆菌(Escherichia coli) 

分 类 号：S482.21[农业科学—农药学]