江原 및 忠南地域 原乳 중 春夏期 衛生細菌의 分布

Microbiological Quality of Raw Milk According to Spring and Summer in Choongcheongnamdo and Kangwondo Province

In order to investigate the bacteriological quality of in raw milk, we examined standard plate count, coliform bacteria, fecal Escherichia coli, mesophilic aerobic spores, psychrophilic bacteria, Pseudomonas aeruginosa and enterococci in raw milks collected from 58 farms in Choongcheongdo and Kangwondo Province according to spring and summer. In standard plate count, the I class(less than 100,000/ml) milks are 48(82.8%) in spring and 31(53.5%) in summer, II class(100,000~250,000/ml) milks are 2(3.5%) in spring and 4(6.9%), III class(250,000~500,000/ml) are 2(3.5%) in summer and 7(12.1%), IV class(500,000~1,000,000/ml) are 3(5.2%), 6(10.3%) and V class(over than 1,000,000/ml) are 6(10.3%) and 11(19.0%), respectively.