【摘要】 研究紫外线在牛乳杀菌中，照射时间、照射距离、牛乳厚度以及温度四个因素与杀菌率之间的关系。通过正交实验得出各因素的最佳工艺组合参数，发现照射时间和牛乳厚度影响杀菌率最为显著；紫外线照射可使牛乳中维生素Ｄ增加。更多还原

【Abstract】 Study on the relationship of the four factors:ultraviolet light raying time,raying distance,milk thickness,temperature and corresponding sterilization rate during the sterilization of milk with ultraviolet light Through orthonormal experiments,obtain the optimal combinated technology parameters of the four factors.Discover that raying time and milk thickness have remarkable effectes on sterilization rate.In the meantime,discover that the content of vitamin D will be increased when the ultraviolet light raying milk.更多还原