Why frozen fresh food is frequently hit


On August 13, the outer package of a frozen chicken wing imported from Brazil in Shenzhen and a frozen shrimp imported from Ecuador in Xi’an were successively disclosed to be positive for the nucleic acid of the new coronavirus. According to incomplete statistics by Beijing News reporter, within two months, at least 10 cases of new coronavirus positive in food packaging were detected in China, which was related to imported frozen fresh food.
Industry experts pointed out that the reason why the new coronavirus “favors” imported frozen fresh packaging for many times may be related to the fact that the epidemic situation in foreign countries has not been completely controlled, the working environment of fresh processing industry is low temperature and labor-intensive. At present, there is no new evidence that coronavirus is the source of infection. Consumers can do a good job in the purchase of protection, in cooking should pay attention to the key links of hygiene, and cooked food materials. However, there is no zero risk in food safety. If individuals are particularly concerned, they can choose not to eat.
Imported frozen fresh package won 10 times in 2 months
On August 13, the office of the epidemic prevention and control headquarters of Shenzhen City announced that on August 12, a frozen chicken wing imported from Brazil with the registration number of sif601 and batch number of 7720051522 was found in Longgang District of Shenzhen City, and the nucleic acid test results of the surface samples of the frozen chicken wings were positive.
On August 13, the official microblog of Shaanxi health and Health Commission announced that at 9:00 p.m. on August 12, the local disease control department found that Ecuador frozen raw South American white shrimp (hereinafter referred to as “frozen shrimp”) with batch number 0063 and registration number of 7057 in Xi’an Fangxin frozen and non-staple food wholesale market was found to be positive for NCV nucleic acid detection in some samples of outer packaging.
It should be noted that the registration number of the enterprises to which the batch of frozen shrimp belongs is different from that of the three Ecuadorian enterprises whose import was suspended by the customs in July. According to incomplete statistics by Beijing News reporter, including the above two incidents, at least 10 new coronavirus positive events related to imported frozen fresh packaging have been disclosed in all parts of China since July.
On July 10, the General Administration of Customs reported that Dalian customs and Xiamen Customs respectively tested positive for NCV nucleic acid from the inner wall and outer packaging samples of three batches of frozen shrimp containers imported from Ecuador; on July 14, Pingxiang, Jiangxi Province, reported that some consumers in this city had purchased frozen shrimp from Ecuador through the group purchase platform, while the inner wall and outer packaging of the same batch of products had been detected with new crown On July 15, Shapingba District of Chongqing reported that the new coronavirus nucleic acid in the outer packaging of some frozen shrimp products from Ecuador in a frozen warehouse of Chongqing western logistics park was detected to be positive; on July 16, Yunnan reported that the nucleic acid of new coronavirus was detected in three frozen shrimp samples from Ecuador from the outer surface of the packaging box; on August 12, Wuhu, Anhui, on August 11, 1 The results of nucleic acid check of NCV in frozen shrimp samples imported from four restaurants were positive.
At the same time, enterprises related to the import and export of frozen food trade have also been affected. On July 23, Dalian, Liaoning reported that new coronavirus was detected in food and environmental samples of Kaiyang seafood cold storage, processing workshops, dormitories, canteens and other food and environment samples, and new coronavirus was confirmed by employees in succession. On August 11, Yantai, Shandong Province reported that three enterprises imported frozen seafood products from the same foreign cargo ship at Dalian Port tested positive for NCV nucleic acid.
Low temperature and labor intensity are the main reasons for the success
It is not difficult to find that the detection products and environment of the new coronavirus are closely related to the “imported frozen fresh food”. What characteristics does the new coronavirus like about imported frozen fresh food? Zhu Yi, an associate professor at the school of food science and nutrition engineering of China Agricultural University, told the Beijing news that the above-mentioned pollution has nothing to do with fish, shrimp, chicken wings or packaging. The key lies in the cold chain environment. Under the low temperature of – 18 ℃ throughout the whole process, the virus that likes cold and fears heat can survive. The detection of continuous products is not a bad thing, which shows the tight control of epidemic situation in China.
On June 19, Li Lanjuan, academician of the Chinese Academy of engineering, also carried out scientific research on the survival environment of the virus at the exchange meeting on anti epidemic experience held by Hangzhou Customs. “Generally, viruses can survive longer in the cold chain. Among the viruses we know and master, they can survive for more than 3 ~ 6 months at about 4 ℃ and long-term survival for 20 years below – 20 ℃. Different viruses have different survival times. ” It is worth noting that Li Lanjuan and the team stressed that compared with the known and mastered virus, the new coronavirus is a new virus. It is only 8 months since its appearance. Its understanding and low temperature tolerance ability need further research.
Zhong Kai, deputy director of Kexin food and nutrition information exchange center, told the Beijing news that in addition to the low temperature and closed process of processing and transportation, meat and seafood processing places are also densely populated. In addition, the foreign epidemic situation is not well controlled, so the probability of imported frozen fresh food contaminated by virus is relatively high.
Zhu Yi also believes that the outer packaging of imported frozen fresh food with new coronavirus detection, like the contaminated elevator buttons and door handles, may be contaminated with the droplets of the infected person. If the epidemic situation in the production area is not over, the risk of employees being infected is high, and the risk of food surface contamination is high. Under the situation of epidemic situation in many foreign regions, it is difficult for labor-intensive food processing factories to be independent. However, if pollution is not eliminated at the source, cold chain food and packaging will be detected positive continuously.
Attention should be paid to the hygiene of key links in the processing of food materials
Based on the fact that new coronavirus was frequently detected in imported frozen fresh packaging, Shenzhen