Total coliform detection

The Escherichia coli group is not a bacteriological classification and nomenclature, but a term used in the field of hygiene bacteria. It does not represent a specific bacterium or genus, but refers to a group of bacteria with certain characteristics related to fecal pollution. These bacteria are not completely consistent in biochemistry and serology, and are defined as aerobic and facultative anaerobic Gram negative germ free bacteria that can decompose lactose to produce acid and gas at 37 ℃. It is generally believed that this group of bacteria can include Escherichia coli, Citrobacter, Klebsiella pneumoniae, and Enterobacter cloacae. The Escherichia coli group mainly includes the Escherichia genus, Citrobacter genus, Morebsiella genus, and Enterobacteriaceae genus in the family Enterobacteriaceae. These genera of bacteria all originate from the intestines of humans and warm-blooded animals, are aerobic and facultative anaerobic, and do not form spores; Under conditions of 35-37 ℃, lactose can be fermented to produce acid and gas within 48 hours, with a Gram negative result. The Escherichia coli group is mainly composed of Escherichia coli, commonly known as typical Escherichia coli. The coliform community is directly or indirectly derived from the feces of humans and warm-blooded animals. The bacterial genera other than typical Escherichia coli in this group may not only come directly from feces, but may also come from the variation of typical Escherichia coli in the environment after being excreted from the body for 7-30 days. So the detection of coliform bacteria in food indicates that the food has been contaminated with feces from humans and warm-blooded animals. Typical coliform bacteria are recent fecal contamination, while other bacterial genera may be outdated fecal contamination

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BAIJIAN testing process:

1. Telephone communication and confirmation of requirements

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4. Progress tracking and result feedback

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6. If urgent or priority processing is required

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