乳糖酶在生产低乳糖奶中的应用研究  

Study on lactases in the production of low-lactose milk application

作　　者：孙国庆 史玉东[1] 付治军[1] 康小红[1] 胡新宇[1] 刘卫星[1] 

机构地区：[1]内蒙古蒙牛乳业(集团)股份有限公司研发中心,内蒙古呼和浩特011500

出　　处：《食品与机械》2008年第2期128-130,共3页Food and Machinery

摘　　要：为选出最适合生产低乳糖牛奶的乳糖酶,采用过氧化物酶法检测不同来源乳糖酶的水解率。结果发现,当39℃、2h时,乳酸克鲁维酵母乳糖酶的水解率到达最高(96%);当加热时间和温度不变,若3种乳糖酶的水解率均达到90%以上,则脆皮克鲁维酵母添加浓度最高(添加质量比例0.2%)。研究表明,在相同条件下,乳酸克鲁维酵母乳糖酶的水解率比E.coli乳糖酶和脆皮克鲁维酵母乳糖酶水解率高,且适合生产低乳糖牛奶。In order to chose the most suitable lactase to produce low lactase milk,we used the enzyme peroxides testing method to detect different sources of lactase s hydrolysis rate.The results showed,the hydrolysis rate of K.lactic lactase arrived a highest value(96%),conditionally in 39 ℃,2 h.If we let the three kinds of lactases hydrolysis rate arrived a value which were more than 90%,the K.fragile lactase would be added a largest concentration(0.2% of the total weight).The results showed that,the K.lactic lactas...

关 键 词：牛乳 乳糖酶 水解率 

分 类 号：TS252[轻工技术与工程—农产品加工及贮藏工程]