Some quality problems such as fat separation,coagulation,sour package and bitter package were investigated on the shelf life of UHT milk.

• 阐述了超高温灭菌牛乳在贮藏过程中会出现的质量问题及乳中耐热酶的性质;论述了产品质量问题与UHT乳中耐热酶的关系及其解决办法。