Gogov I, Kaloianov I
Vet Med Nauki. 1978;15(8):82-6.
Investigated for the presence of E. coli-bacteria belonging to the O-groups of dispeptic strains, are 85 samples of raw and 212 pasteurized milk, taken from subsequent departments of the milk-producing industry. Dispeptic E. coli are detected in 11.76 per cent of the samples of raw milk studied, and in 5.18 per cent in those of the pasteurized milk. No coli forms are established in samples, taken directly from the pasteurizing equipment. The secondary infection with E. coli results from the use of vessels and equipment in the course of the technological process. E. coli-bacteria, belonging to the O-groups of dispeptic strains, are demonstrated in samples both with the aid of a coli-titre, in conformity with standard requirements, and in samples that are not standard, according to this indice. The 21 strains of E. coli-bacteria isolated are referred to the following O-groups: 06, 025, 026, 055, 078, 086, 0111, 0119, 0124, 0125 and 0127. Some of the strains isolated manifest an atypical behaviour to lactose and sucrose in comparison with the properties, indicated in the scheme by Kauffmann.
对来自牛奶生产行业后续部门的85份生牛奶样本和212份巴氏杀菌牛奶样本进行了调查，以检测是否存在属于消化菌株O群的大肠杆菌。在所研究的生牛奶样本中，11.76%检测出消化性大肠杆菌，在巴氏杀菌牛奶样本中这一比例为5.18%。直接从巴氏杀菌设备采集的样本中未发现大肠杆菌。大肠杆菌的二次感染是由于在工艺流程中使用了容器和设备。借助符合标准要求的大肠杆菌滴度，以及根据该指标不符合标准的样本中，均证实了属于消化菌株O群的大肠杆菌。分离出的21株大肠杆菌属于以下O群：06、025、026、055、078、086、0111、0119、0124、0125和0127。与考夫曼方案中所示特性相比，一些分离出的菌株对乳糖和蔗糖表现出非典型行为。
