coliforms are all directly or indirectly from human and warm-blooded animals' feces. Besides directly from feces, they may also come from the variation of typical Escherichia coli in the environment after 7-31 days of excretion. Escherichia coli is an indicator of fecal pollution, and the performance of this flora indicates that it may be directly or secondary pollutant by feces. Using tableware with coliforms may cause uncomfortable symptoms such as diarrhea and gastrointestinal infection.

coliform bacteria is one of the commonly used indicator bacteria for food pollution at home and abroad, which mainly indicates whether there is fecal pollution in food based on the detection of coliform bacteria. The number of coliform bacteria indicates the degree of pollution and also reflects the harm to human health. Feces are human intestinal excreta, including healthy people's feces and intestinal patients' feces, so besides normal bacteria, there are also some intestinal pathogenic bacteria in feces.

coliform group is not a taxonomic name of bacteria, but a term in the field of sanitary bacteria. It does not represent a certain bacteria, but a group of bacteria, including Escherichia coli and Citrobacter.

Extended information:

When tableware with excessive Escherichia coli is used, the most obvious symptom of the disease is diarrhea, which can also lead to intestinal infection in severe cases. The incubation period of diarrhea is usually 3 ~ 4 days, but some of them are as long as 9 days. Generally speaking, diarrhea is self-limited for 2-3 days and can be cured, but it may be repeated for malnourished people.

The incubation period of parenteral infection is usually 3-4 days. Coliform bacteria can invade the blood and cause leukemia. Premature infants and newborns are prone to coliform bacteria. Sexual meningitis is the main pathogen of infantile diarrhea, which is highly contagious.

In order to warn consumers and ensure the food safety of consumers, Changchun Food and Drug Administration * * * randomly selected 1411 batches of 6 kinds of food, and 76 batches of unqualified samples, with a qualified rate of 94.57%. Among them, 217 batches of grain processed products, 518 batches of condiments, 91 batches of meat products and 3 batches of cakes were all qualified; 113 batches of beverages, 6 batches of unqualified samples, 479 batches of catering food and 71 batches of unqualified samples.

Reference: The coliform bacteria detected in the dining room tableware of Baidu Encyclopedia-Heze No.1 Middle School was 81 times higher than the standard.