期刊
JOURNAL OF DAIRY RESEARCH
卷 68, 期 2, 页码 189-196出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S002202990100485X
关键词
pasteurized milk; Bacillus cereus; filling machine; RAPD method
The contamination of pasteurized milk by Bacillus; cereus during the filling process Was studied in two dairy plants. Samples of pasteurized milk Were taken at four different sites along the production line. The samples were stored at 7 degreesC for 7 d or at 10 degreesC for 5 d, before plate counting and random selection of B. cereus isolates. Isolates of B. cereus were typed by the polymerase chain reaction (PCR)-based method randomly amplified polymorphic DNA (RAPD). Samples taken at three different sites between the pasteurizer and the filling machine Were all holding similar low concentrations of B. cereus, while an increase of the B. cereus count vas seen in the consumer packages. More B. cereus of different RAPD types was growing in the consumer packages than in samples, taken just before the filling machine. Several RAPD types found in the consumer packages were not detected in the samples taken just before the filling machine.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据