在室温条件恒定时间下对鲜乳施加不同压力的处理,测定其微生物指标和理化指标,并与巴氏灭菌乳进行比较。结果表明:结果表明:1)加压时间恒定情况下,压力越高,灭菌效果越好。2)超高压杀菌处理虽然降低了牛乳的L值,改变了牛乳的感官特性,但是增加了牛乳中游离态钙的含量,特别是游离氨基酸含量明显增加,检测数据也表明,超高压灭菌对其破坏要比巴氏灭菌小,最大限度的保留了牛乳的营养价值。3)与巴氏杀菌乳相比,超高压杀菌有助于延长牛乳的保质期,扩大牛乳的销售半径。
In the room temperature constant time on fresh milk processing under different pressure, determination of the microbial and chemical index, and pasteurized milk were compared. Results: the results showed that: 1 ) the time constant pressure conditions, the higher the pressure, the better the effect of sterilization. 2) high pressure sterilization while reducing milk L, changed milk sensory properties, but increased milk free calcium content, especially the free amino acid content increased, detection data also shows, ultra-high pressure sterilization for the failure than pasteurized small, to maximize the retention of milk nutritional value. 3) compared with pasteurized milk, ultra high pressure sterilization helps to prolong the shelf life of milk, milk sales expansion radius.
In the room temperature constant time on fresh milk processing under different pressure, determination of the microbial and chemical index, and pasteurized milk were compared.Results: the results showed that: 1) the time constant pressure conditions, the higher the pressure, the better the effect of sterilization.2) high pressure sterilization while reducing milk L, changed milk sensory properties, but increased milk free calcium content, especially the free amino acid content increased, detection data also shows, ultra-high pressure sterilization for the failure than pasteurized small, to maximize the retention of milk nutritional value.3) compared with pasteurized milk, ultra high pressure sterilization helps to prolong the shelf life of milk, milk sales expansion radius.