酸奶生产中的噬菌体污染

Study on Pollution of Phage in Yoghurt Processing

利用噬菌斑形成、产酸抑制等方法进行检测,对酸奶工厂存在的嗜热链球菌(Streptococcus thermophilus)噬菌体和保加利亚乳杆菌(Lactobacillus bulgaricus)噬菌体进行了初步的研究。结果表明,嗜热链球菌噬菌体为烈性噬菌体,而保加利亚乳杆菌噬菌体为温和噬菌体。

Streptococcus thermophilus and Lactobacillus bulgaricus in yoghurt processing were studied with the method of plaques assay and acid inhibition. Studying results showed that S. thermophilus was the virulent phage and L. bulgaricus was the gentle phage.