Xinhua News Agency, Beijing 65438+1October 30th. 65438+ 10 Since the microwave oven entered the "Golden September and Silver 10" sales season in September and June, reports on the harm of microwave oven processing to human health have appeared on the Internet and newspapers one after another. These reports once again mentioned the "harmful theory of microwave ovens": first, microwave ovens will cause electromagnetic radiation and microwave leakage; Second, the use of microwave heating will cause serious loss of nutritional value of food; Third, when you eat microwave food, your body will focus on some harmful changes. Experts believe that these statements are groundless.
Cao, a researcher at the Institute of Biophysics of the Chinese Academy of Sciences and an expert in radiation biology, believes that microwaves can be widely used in communication, remote sensing and other fields for the benefit of mankind. The invention of microwave oven is one of the great inventions of the 20th century. There is no convincing evidence about whether processed food is harmful to human body. It is obviously irresponsible to say that "microwave food is harmful to human body" without strict scientific experiments.
Officials from relevant state departments also said that they have not received any reports about the harm of microwave food to human body. Some people say that the former Soviet Union banned the use of microwave ovens in 1976 and issued a global warning. According to the investigation of relevant departments, the former Soviet Union did not issue a warning to ban microwave ovens at all, but the translation misinterpreted the meaning of the original text, which said that attention should be paid to preventing microwave ovens from leaking electricity. At present, a brand of microwave ovens in China has exported more than 300,000 microwave ovens to the former Soviet Union every year, and the trend is on the rise.
According to Zhang Tieyan, deputy director of China Household Appliances Research Institute, National Household Appliances Quality Supervision, Inspection and Testing Center and Laboratory of Import and Export Household Appliances Accreditation Center of the State Commodity Inspection Bureau, the radiation generated by microwave ovens is even less than that of an ordinary fluorescent lamp. At present, the international standard of microwave leakage of microwave ovens is no more than 5 milliwatts per square centimeter, which will not cause any harm to people's health. The standard of "no more than 1 milliwatt per square centimeter" for microwave leakage in China is stricter than the international standard of "no more than 5 milliwatts per square centimeter". In Europe, America, Japan and other developed areas, everyone uses microwave ovens, but I have never heard of malnutrition.
Adele, a female professor of physics at the University of Wisconsin in the United States, has been studying the effects of microwave radiation on small animals and humans for more than 25 years. She once put squirrel monkeys and other animals in the microwave room for irradiation, but those small animals were very excited in the microwave room, but they were a little reluctant to come out. In addition to personally entering the microwave room, Adel invited volunteers of different ages and sexes to do the same experiment. As a result, they almost want to enjoy the bright sunshine. She explained that although microwaves belong to the same kind of radiation as X-rays and gamma rays, their quantum energy is different by millions of times. She pointed out that the only way for microwave to kill cells is to "heat yourself to death", and the radiation leaked by microwave ovens will never reach such a level.
According to the detection and analysis of food hygiene supervision department, the loss rate of vitamin C in Chinese cabbage cooked by microwave oven is 4.76%, while the loss rate caused by traditional cooking method is 19.04%. In addition, after microwave cooking, the deposition rate of minerals and amino acids in food is much higher than other cooking methods. If the hoof is cooked in microwave oven, the eight essential amino acids are 98.6% of those before microwave heating. Salted meat, bacon, salted fish and smoked duck will produce nitrosamines during processing; Nitrite, as a preservative, can also produce nitrosamines when it reacts with food, which will lead to cell canceration. American pharmacologists found that bacon baked in microwave oven for 45 minutes was crispy and delicious, and chemical analysis could not find traces of nitrosamines.
Regarding the emerging harmful theory of microwave ovens, Deputy Secretary-General Chen Gang of China Household Electrical Appliances Association thinks that this is a manifestation of unfair competition in the household electrical appliances industry. Relevant persons pointed out that all parties concerned should make joint efforts with Qixin to maintain the stable and orderly microwave oven market in China and the healthy development of the whole industry.