加压CO2对乳中主要腐败菌及致病菌的杀菌效果
Sterilization effect of pressurized CO2 on major spoilage and pathogenic bacteria in milk
研究了加压CO2对牛乳中主要腐败菌荧光假单胞菌、大肠杆菌和主要致病菌金黄色葡萄球菌的杀菌效果。通过改变CO2压力、加压时间、加压温度和加压介质研究了影响杀菌效果的因素。结果表明，增加压力、延长加压时间和提高加压温度都可以增强加压CO2对牛乳中三种菌的杀菌效果；牛乳成分对细菌具有保护作用；革兰氏阴性菌比革兰氏阳性菌对加压CO2处理更加敏感；在灭菌牛乳中接种单一细菌时，在45℃下使用6MPaCO2加压40min可以使大肠杆菌和荧光假单胞菌的杀菌率达到达到99.09%和99.23%，对金黄色葡萄球菌杀菌率为91.81%。
Sterilization effect of pressurized CO2 on major spoilage (Pseudomonas fluorescent, Escherichia coli) and pathogenic bacteria (Staphylococcus aureus) in milk was studied. The effect of CO2 pressure, treatment time, treatment temperature and treatment media on sterilization efficiency were studied. The results indicated that the effect on three bacterium was increased by increasing pressure, treatment time and treatment temperature; the bacterium was protected by milk protein and fat; Gram-negative bacteria were more sensitive than Gram-positive bacteria to the treatment of pressurized CO2.
付瑞东、刘美凤、李晓东、姚春艳
微生物学
加压CO2牛乳腐败菌致病菌杀菌效果
pressurized CO2 milk spoilage bacteria pathogenic bacteria sterilization effects
付瑞东,刘美凤,李晓东,姚春艳.加压CO2对乳中主要腐败菌及致病菌的杀菌效果[EB/OL].(2011-12-28)[2025-08-16].http://www.paper.edu.cn/releasepaper/content/201112-799.点此复制
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