Khalafalla F, el-Sherif A
Department of Food Hygiene, Faculty of Veterinary Medicine, Cairo University, Beni Suef, Egypt.
Nahrung. 1993;37(5):428-32. doi: 10.1002/food.19930370504.
A total of 50 samples of frozen fresh beef sausage were collected from grocery stores at Beni Suef City. These samples were examined for enumeration, isolation and identification of psychrotrophic bacteria. All samples contained psychrotrophic bacteria in variable numbers. The mean counts of psychrotrophic bacteria, psychrotrophic Enterobacteriaceae, Pseudomonas, Aeromonas, Brochothrix thermosphacta and Lactic acid bacteria were 2 x 10(5) +/- 10(3), 6 x 10(3) +/- 4 x 10(2), 10(3) +/- 2 x 10(2), 4 x 10(2) +/- 8 x 10, 8 x 10(2) +/- 10(2) and 8 x 10(2) +/- 2 x 10(2) organisms per gram, respectively. Psychrotrophic Enterobacteriaceae isolates were identified biochemically. The hygienic significance of the isolates, their public health importance as well as supposed measures to improve the product are discussed.
从贝尼苏韦夫市的杂货店共采集了50份冷冻新鲜牛肉香肠样本。对这些样本进行了嗜冷菌的计数、分离和鉴定。所有样本均含有数量不等的嗜冷菌。嗜冷菌、嗜冷肠杆菌科、假单胞菌、气单胞菌、热杀索丝菌和乳酸菌的平均计数分别为每克2×10⁵±10³、6×10³±4×10²、10³±2×10²、4×10²±8×10、8×10²±10²和8×10²±2×10²个菌体。对嗜冷肠杆菌科分离株进行了生化鉴定。讨论了分离株的卫生学意义、它们对公共卫生的重要性以及改善产品的假定措施。
