摘要
以牛乳为原料,应用来源于乳酸克鲁维酵母产生的乳糖酶(MAXILACT乳糖酶)对牛乳中的乳糖进行水解,经杀菌灭酶、真空浓缩、喷雾干燥,开发了具有营养和保健功效的低乳糖奶粉。MAXILACT乳糖酶最适水解条件pH值为6.6～6.8,水解温度30～40℃。结合乳糖酶在水解过程中,由于微生物对牛乳的影响,低乳糖奶粉生产过程中,牛乳的水解温度10℃,水解时间8 h,乳糖酶添加量0.8 g/L,牛乳经乳糖酶水解,其乳糖水解率达到60%以上。利用乳糖酶对牛乳进行乳糖水解,经杀菌灭酶、真空浓缩、喷雾干燥,在工艺上可行、技术上合理、设备上可操作,产品各项指标均达到低乳糖奶粉的质量指标。
In the study, Using milk as raw material. Applied MAXILACT lactase from Kluyveromyces lactis to hydrolyzing of lactose in milk. Through inactivation of microorganisms and enzymes, vacuum concentration, spray drying and a new low lactase milk powder product was produced . It has the essential nutrition and health. Hlydrolysis temperature 30-40℃, pH 6.6-6.8 of MAXLACT lactase in this experiment. The results showed that amount of lactose added 0.8 g/L, the hydrolysis temperature 10℃, time 8 h and lactase hydrolysis rate above 60% without increasing the microbial count in the milk. The method was reliable ,the technically was reasonable ,the equipment could be operation. Every indexes of production reached quality standards.
出处
《中国乳品工业》
CAS
北大核心
2008年第6期24-27,30,共5页
China Dairy Industry
关键词
乳糖酶
低乳糖
奶粉
lactase
low lactose
milk powder
