Multi-site sampling to detect coliform bacteria in tableware and rice noodles Expert： Many reasons are secondary pollution.
Recently, the market supervision departments in many places issued a notice on the unqualified food sampling list. The Paper combed and found that it involved many problems such as pesticide residues and microbial pollution. The market supervision department has carried out verification and disposal work.
It is noteworthy that coliforms were detected in tableware and rice noodles in the unqualified sampling list of several batches of food published by Tai ‘an Municipal Market Supervision Administration and Baise Municipal Market Supervision Administration.
Why are coliforms detected in tableware and rice noodles? Kai Zhong, deputy director of Kexin Food and Nutrition Information Exchange Center, said that coliforms mainly come from the intestines of warm-blooded animals, but they are widely distributed in nature. Dishes, rice noodles and so on have coliforms exceeding the standard, mostly because of secondary pollution.
Many enterprises were found to contain coliforms in their products.
On July 5th, Tai ‘an Municipal Market Supervision Administration issued the information circular on food safety sampling inspection (hereinafter referred to as the circular), which disclosed problems such as excessive pesticide residues and microbial pollution.
According to the notice, coliforms were detected in the tableware plates of Fuchunyuan Restaurant in Taishan District and Shandong Xiaolongxiao Jiutian Catering Management Co., Ltd. in Taishan District. According to the national food safety standards, coliforms should not be detected in tableware.
Tai ‘an Municipal Market Supervision Administration said in the notice that the market supervision department of the place where the production and operation enterprises are located has ordered the enterprises to find out the product flow, recall and remove the unqualified products, control risks, file an investigation, and analyze the reasons for rectification. The unqualified products involved have been verified and disposed of as required.
The Paper combed and found that Baise Municipal Market Supervision Administration had previously released the 26th food safety supervision and sampling information announcement in 2021 on July 1, which also showed that the prepared fresh and wet rice noodles sold by Guangxi Tiandong Weimeijia Agricultural Products Development Co., Ltd. and tianlin county Huaxu Food Co., Ltd. were all found to have coliforms.
Kai Zhong, deputy director of Kexin Food and Nutrition Information Exchange Center, said that coliforms are the general name of many bacteria, including Escherichia coli. It is a hygienic indicator bacterium, but it does not lead to disease if it is detected. The higher the detection value, the greater the possibility. Coliform bacteria can be detected in many foods, but as long as there are no pathogenic bacteria, it will generally not cause health hazards. As for the source of coliform bacteria, Kai Zhong said that coliform bacteria mainly come from the intestines of warm-blooded animals, but they are widely distributed in nature. Dishes, rice noodles and so on have coliform bacteria exceeding the standard, mostly because of secondary pollution.
According to the interpretation information released by the market supervision department, coliform bacteria is one of the commonly used indicator bacteria for food pollution at home and abroad. The detection of coliform bacteria in food suggests that it is more likely to be contaminated by pathogenic bacteria (such as Salmonella, Shigella and pathogenic Escherichia coli). Excessive coliform bacteria may be caused by the pollution of processing raw materials and packaging materials of products, or the pollution of products by production equipment and environment such as personnel and tools during production, and the incomplete sterilization of products with sterilization technology.
A variety of foods were found to have excessive drug residues.
In addition to coliform bacteria, some enterprises have been found to have drug residues and other problems. In the notice issued by Tai ‘an Municipal Market Supervision Administration on July 5, the bureau disclosed that the content of "procymidone" in leeks sold by Baxianju Commercial Bank in Ningyang County and Yanzhuang Haiwei Supermarket in Daiyue District was higher than the national food safety standard.
The Paper combed and found that in recent food sampling notices issued by many market supervision administrations, the problem of unqualified drug residue detection of enterprise-related products appeared.
On July 2nd, the 7th notice of Gansu Provincial Market Supervision Bureau on the sampling inspection of unqualified food showed that chloramphenicol, a drug banned from food animals, appeared in Jinghui brand acacia honey produced by Gansu Jinghui Bee Industry Co., Ltd..
On July 5, 2021, Jilin Provincial Market Supervision and Management Department’s 27th notice on unqualified food showed that the carp sold by Fengyun Aquatic Products Company in Automobile Industry Development Zone, Wuchang Fish sold by Yixin Aquatic Products Store in Chaoyang District and snakehead sold by Guo Di Seafood Wholesale Company in Kuancheng Agricultural Products and Aquatic Products Market were all found to exceed the standard.
The attachments of the above-mentioned relevant notices show that excessive coliforms are likely to cause intestinal diseases such as dysentery, which may cause symptoms such as vomiting and diarrhea. The pesticide procymidone is irritating to people’s eyes and skin. Long-term consumption of leeks with excessive procymidone residues may cause neurological disorders.
The market supervision department reminds consumers that when they find the unqualified products involved in the notice, they can call the 12315 hotline to complain or report.