Net transmission "formaldehyde food" as an expert: a small amount of formaldehyde is normal and safe

recently, Weibo WeChat has been out of the "supermarket mushrooms, cucumbers, small tomatoes, cabbage and other foods contain formaldehyde" news. Highly toxic, carcinogenic, sensitive... For a time, many people "talk about aldehyde color change", can not help but worry about whether they can "eat at ease". So what's the truth? Our reporter interviewed a number of experts in the field of food security in the province on related issues.Third-party testing: supermarket samples "low formaldehyde content days ago, Guiyang Food and Drug Administration, the provincial circulation link food safety inspection and testing center staff in Guiyang City, Beijing Hualian, Yonghui supermarket and the Red Border Gate Farmers Market conducted spot checks. In accordance with the statutory sampling procedures, the staff randomly selected packaged mushrooms, cucumbers, small tomatoes, vegetable hearts and pig's hoofs, chicken claws, squid and other samples, and sent samples to Guizhou Province circulation food safety inspection center for testing.it is understood that the center currently has 456 food safety inspection and testing indicators qualified, with formaldehyde content in food compared to the analysis of scientific research and testing capabilities, is a legal qualification of third-party testing institutions. The test found that all samples contained no more than the national recommended minimum limit (10 mg/kg) and the result was: "Low formaldehyde content".expert analysis: exposure led to food "contaminated Guizhou food safety cloud engineering marketing director, researcher Xie Feng explained to reporters the laboratory testing process, "the laboratory through rapid screening found that some samples did appear positive." But he said that while the rapid detection method is highly sensitive, it is not stable enough, and the color of the reagent changes over time, and there is no way to use it as a quantitative basis. Subsequently, the laboratory in the positive samples in accordance with the national method of quantitative testing, "really low content." He said.To this, Xie Feng analysis, formaldehyde is a large chemical raw materials, in daily life everywhere, test samples may be in the production, transportation, storage or sales process of exposure to contaminated materials, resulting in "containing formaldehyde."Li Ronghua, assistant director and engineer of the Food Safety Inspection Center of Guizhou Province, told reporters that the reference limit cited by the State Administration of Food and Drug Administration for formaldehyde risk monitoring is 10 mg/kg, while other products such as soy products are referenced to 20 mg/kg.For the network said that each square centimeter of the skin containing formaldehyde 0.28-0.48 micrograms, Li Ronghua made a simple conversion: if each square centimeter skin corresponds to 1 gram of food, then the content of formaldehyde in food can be equal to 0.28-0.48 mg/kg, "is far below the national standard reference limit." " can be identified by smell Rinse cooking can reduce formaldehyde " formaldehyde in food is an intermediate product of the metabolic process. Tao Guangcan, an expert in food safety cloud engineering in Guizhou and a Ph.D. from China Agricultural University, said, "Therefore, many uncooked foods such as meat products, fish products, dairy products and vegetables contain small amounts of formaldehyde." Taotold reporters that a small amount of formaldehyde will not cause harm to the human body, only the use of large doses of formaldehyde will cause harm to the human body. According to the World Health Organization, the daily tolerable formaldehyde per kilogram of body weight is 0.15 mg. In other words, people weighing 50 kilograms have a tolerable level of formaldehyde of 7.5 milligrams per day. "A small amount of formaldehyde quickly becomes foryacetic acid through the body's metabolism and is excreted through the respiratory system and urine." Tao Guangcan said.Tao Guangcan also said that formaldehyde is not without trace. "Formaldehyde is a substance that has a irritating smell, and when you buy food, it's easy to find out if it contains too much formaldehyde."At the same time, formaldehyde dissolved in water, formaldehyde on the surface of food through water immersion, flushing can be removed, formaldehyde inside the food can not be flushed off, by cooking for 10 minutes or frying for 5 minutes, you can make formaldehyde greatly reduced, will not cause harm to the human body.