DIN ISO 16649-2-2020 食品和动物饲料的微生物学. β-葡萄糖醛酸酶阳性大肠杆菌计数的水平方法. 第2部分: 在44 ℃下使用5-溴代-4-氯-3-吲哚 β-D-葡萄糖醛酸苷菌落计数技术(ISO 16649-2-2001)
Microbiology of food and animal feeding stuffs - Horizontal method for the enumeration of β-glucuronidase-positive Escherichia coli - Part 2: Colony-count technique at 44 °C using 5-bromo-4-chloro-3-indolyl β-D-glucuronide (ISO 16649-2:2001)
This part of DIN ISO 16649 specifies a horizontal method for the enumeration of ß-glucuronidase-positive Escherichia coli in products intended for human consumption or for the feeding of animals. It uses a colony-count technique at 44°C on a solid medium containing a chromogenic