乳品是有全脂乳入或脱脂乳经过一定生产工艺而制成的食品。乳品在生产过程中,微生物的活动状况受多种因素影响。原料鲜乳经过消毒后,微生物含量可以降低到很少的数量,这个数量的多少与原料中原来含有的微生物数量有很大的关系。原料鲜乳受污染愈严重,则消毒乳中残存的微生物也愈多。特别在夏季的乳品生产中常出现这种现象。污染严重的牛乳,每毫升含有的细菌数之多。 Dairy is a whole milk or skim milk through a certain production process and made of food. Dairy products in the production process, the activity of microorganisms affected by many factors. After the raw milk is sterilized, the microbial content can be reduced to a very small amount. This quantity has a great relationship with the amount of the original microorganism in the raw material. Fresh raw milk contaminated raw more serious, then disinfection of milk in the remaining microorganisms are more. This is especially the case in summer dairy production. Polluted milk contains as many bacteria per milliliter.