I adopted the method of gradient dilution coating, separated Streptococcus thermophilus and Lactobacillus Bulgaria from the acidophilus milk sold in market, then sublimated and identify them. Besides , I did milk ferment experiment for them .

• 采用梯度稀释涂布法从市售酸奶中分离纯化鉴定出嗜热链球菌(Streptococcus thermophilus简写T),保加利亚杆菌(Bulgaria Lactobacillus简写B),并对其进行乳发酵实验。