Thus, the presence of psychrotrophic, mesophilic and thermophilic Bacillus spp from bulk raw milk should be taken as one of the detection items, in order to well judge the quality of raw milk.

• 这种特性使其能经巴氏杀菌而残存于乳中,因此把芽孢数及耐热芽孢数、嗜冷菌作为原料奶检验项目之一,能较全面地评判原料奶的质量。