纳米银对海参腐败中优势菌种的抑制作用

目前常用的海参干燥方法为水发和盐发,但是此类方法所得海参品质极低。现在为得到高品质海参产品,多采用真空冷冻干燥,但是真空冷冻干燥时间较长,微生物难于控制。采用液相化学还原法制备纳米银,然后将海参腐败过程中优势菌进行分离纯化,研究了纳米银对海参腐败中优势菌,以及海参中所有菌的抑制作用。结果表明,浓度在中华人民共和国国家标准-生活饮用水卫生标准最大允许量(0.05mg/L)以下的纳米银与海参腐败中优势菌株,或海参腐败中所有菌作用12h后,能杀灭80%左右的细菌。

Study on the Preparation and Sterilization of Silver Nanoparticles to the Ascendent Bacterium Within the Putrid Sea Cucumber

In order to overcome the shortcomings of the methods including water-drying,salt-drying and vacuum freeze-drying,this study firstly prepared the silver nanoparticles by chemical reduction in liquid phase,than separated the corruption bacteria from the sea cucumber,.Based on the above results,the sterilizing effect of the silver nanoparticles on the corruption bacteria and on the all microorganisms in the putrid sea cucumber were carefully investigated.It was demonstrated that 0.05 mg/L silver nanoparticles can efficiently sterilize 80% bacterium after 12 h treatment.