摘要
乳及乳制品中污染的嗜冷菌可分泌耐热的胞外蛋白酶和脂肪酶,直接影响产品品质。介绍从乳体系中分离鉴定的嗜冷菌种类,指出荧光假单胞菌是产胞外蛋白酶和脂肪酶的主要嗜冷菌菌株;分别阐述乳中污染的嗜冷菌所分泌蛋白酶和脂肪酶的热稳定性,并比较乳体系中耐热酶的测定方法,期望为有效预测乳中嗜冷菌污染程度、在线检测和控制耐热酶活性、提升乳制品的质量提供理论参考。
Extracellular protease and lipase could be secreted by psychrotrophic bacteria in dairy products. These enzymes directly influenced the quality of dairy products. The study described the species of psychrophile isolated from milk, pointing out that pseudomonas fluorescens were the main strains which could metabolize protease and lipase. Thermal stability of these enzymes was elaborated and the methods of detection them were compared. It was expected to provide theoretical thoughts to predict the amount of contaminated psychrophile in dairy and dairy products, online detect and control the activity of thermostable enzyme and improve the quality of dairy products.
出处
《食品研究与开发》
CAS
北大核心
2015年第15期87-91,共5页
Food Research and Development
