Break the casserole The Food and Drug Administration of Guangzhou Food and Drug Administration recently announced results of first-quarter catering food testing, which showed that 44.4% of rice and rice products were found to exceed cadmium levels in spot-check products, which has caused many consumers to worry. Please pay attention - What are the hazards of human intake of cadmium? Cadmium is a kind of heavy metal. Accumulation of cadmium will cause harm to the human body's bones and kidneys. It is one of the most harmful elements that pose a threat to human health. The newborn is almost free of cadmium, and almost all of the body's cadmium is accumulated from food and the environment after birth. As a heavy metal, cadmium originally exists as a compound and does not interact with human life. But the industrial revolution released this devil. According to foreign studies, there are 22,000 tons of cadmium in the soil each year. In China's rapid industrialization, such as mine-mining activities, the harmful heavy metals such as cadmium, arsenic, and mercury, which originally existed as compounds, were released into the natural world. These harmful heavy metals contaminated a large part of China’s land through water and air, contaminating rice and then entering the human body. Over the past few years, Professor Pan Genxing and his research team at the Agricultural Resources and Ecological Environment Research Institute of Nanjing Agricultural University have randomly sampled 91 rice samples from the county-level and above markets in six regions (East, Northeast, Central, Southwest, South and North China). The results also showed that about 10% of the commercial rice cadmium exceeded the standard. According to several scholars, based on the fact that most of the contaminated paddy fields are unrestrictedly growing rice, 10% of the cadmium exceeded rice basically reflects the current reality in China. What is more serious is that China has almost no specifications for the cultivation of land contaminated by heavy metals, and a large number of contaminated land is still producing normal rice. Cadmium toxicity has a cumulative effect "The long-term exposure to large doses of cadmium is harmful to human tissues and organs." Professor Hao Fengtong, chief physician of Occupational Disease and Poisoning at Beijing Chaoyang Hospital, Capital Medical University, said that cadmium and sulfur proteins are formed when cadmium is absorbed into the human body. Through the blood, it reaches the whole body and is selectively stored in the kidneys and liver. "The kidney can accumulate up to 1/3 of the absorption volume and is the target organ for cadmium poisoning." Hao Fengtong revealed that the initial symptoms of chronic cadmium poisoning were fatigue, headache, dizziness, nasal mucosa atrophy, cough, stomach pain and weight loss. After the development of the disease, the patient will experience low back and knee joint pain, yellow cadmium rings on the teeth, bone pain in the entire body, osteoporosis, increased tingling pain during activity, and minor trauma may cause fractures. Some severe patients also developed emphysema, decreased respiratory function, poor kidney function, kidney stones, urine protein, liver damage, and anemia. It is worth noting that even if you eat cadmium rice a few times, you will not be poisoned immediately. Because, the health hazards caused by cadmium pollution need to be accumulated for a long time to appear, and there is a lag in time. "That is to say, the cumulative effect of cadmium toxicity and damage to the human body is long-term, and even if the consumption of high-cadmium rice is stopped, the health-damaging situation will continue. This is for farmers who grow rice for themselves in the cadmium-contaminated area. And especially for town dwellers who have been eating high-cadmium rice, they need to be vigilant.†Suspected poisoning should be tested and treated To find out if there is heavy metal poisoning in the early stage, it is possible to see whether the heavy metal content in the body exceeds the maximum limit of the human body's normal reference value through the detection of heavy metals in blood and urine. Hao Fengtong said that this test can generally be done in occupational disease prevention and treatment institutes, research institutes, and physical and chemical laboratories of institutions of higher learning, but it cannot be concluded on the basis of one test result. “Every laboratory has a certain amount of systematic error, so if heavy metals are detected to exceed normal limits, don’t worry first, and wait a few days to review.†If there are problems with the two tests, you must find out why. What do the patients do, whether they live in heavy metal-contaminated areas, what they eat daily, whether they use inferior metal daily necessities, such as using pig iron, raw copper pots, drinking alcohol, soaking wine, etc., only when the doctor fully understands, Only by discovering the source of poisoning can the patient be alerted. Experts said that excessive levels of heavy metals in the body are not terrible. As soon as metal complexing agents are used as soon as possible, they can promote the excretion of heavy metals to normal levels. However, the resulting damage is not reversible, so early detection and early treatment are more important. Eat omnivorous foods to avoid cadmium poisoning Pan Genxing said that hybrid rice, especially super rice, is at risk of excessive cadmium. However, urban residents do not generally suffer from cadmium poisoning due to the randomness of the rice market and the diversity of food structures. If you buy a brand of rice for a long time, then the quality should be guaranteed. “Branded rice generally has its own base, and monitoring of land pollution is more stringent.†Pan Genxing frankly stated that in fact, tens of millions of rice farmers in the polluted area are the biggest victims. Because rice is the staple food of their three meals a day, some farmers know that there is pollution, but they are trapped in the price difference between selling rice and buying rice, and they are forced to eat contaminated rice. More farmers do not know that the rice they eat is toxic. They are not even sure what the heavy metals are. For this reason, Pan Genxing suggested that in order to reduce the degree of harm to humans caused by certain elements in food, it is particularly important to actively and extensively consume various foods. People should eat more “miscellaneously†and “cannot eliminate cadmium in rice immediately. In the case of higher levels of content, for example, eating more foods containing high levels of zinc, such as marine products, bean products, and melon seeds, can reduce the risk of disease. At the same time, Southerners should eat more northern food. It is understood that excessive cadmium rice is generally difficult to wash with cleaning methods, so to ensure the safety of household meters, we must start from the place of origin: the selection of safe rice. At the same time, thoroughly investigate the rice in the home: look at whether the rice origin in the family is from Hunan. If it is, it is better not to eat, buy glutinous rice from other producing areas, or try glutinous rice produced in the northeast. Rice products such as rice, rice noodles, and rice porridge should also be used with caution. Seeing the origin of rice products and eating outside, cooking at home is safe and secure. ---- Related Links---- "Cadmium rice" hazard questions and answers Xinhua News Agency reporter Lin Xiaochun The issue of "cadmium rice" has caused great concern in China recently. Xinhua News Agency reporters interviewed Rufus Channy, an expert at the US Department of Agriculture’s Institute of Agriculture, an expert who had visited China many times and discussed with Chinese scientists about the problem of heavy metal pollution, on the health hazards of cadmium and standards for cadmium in rice. And related governance measures and other issues are answered one by one. Q: What kind of harm does the excessive intake of cadmium in the human body bring? A: Cadmium can damage the urinary system once it has accumulated in the kidney. The main manifestation of renal damage is proximal renal tubular dysfunction, which is not fatal but may affect life expectancy slightly. Q: Where does cadmium come from? A: Generally, there are two major sources of cadmium in the human body: rice, and tobacco. Related studies have shown that each cigarette contains 1 microgram to 2 micrograms of cadmium, of which about 10% will be absorbed by the body. Cigarettes made from tobacco grown on cadmium-contaminated soil are more harmful to humans. The cadmium in rice is also mainly from the soil, mainly because rice absorbs cadmium in the soil during the planting process. In addition, cadmium contamination may also occur during grain processing, but this has not yet occurred in European countries and the United States. Q: Is there a uniform standard for cadmium in rice in the world? A: The UN Food Standards Commission's regulation is that the cadmium content per kilogram of rice should not exceed 0.4 milligrams. Since there is no evidence that cadmium in food causes health problems in the United States, the United States has not established relevant standards. The EU stipulates that the cadmium content per kilogram of rice should not exceed 0.2 milligrams, and hopes to further raise the standard to 0.1 milligrams. The relevant standard in China is also 0.2 milligrams. Q: How to deal with "Cadmium rice" pollution? Answer: It is very complicated to solve the cadmium pollution problem in China. The first thing to do now is to stop heavy metal cadmium emissions in related industries and ensure that the soil is no longer contaminated by cadmium. For example, China is the place where most of the world's nickel-cadmium batteries are produced, but related factories lack measures to control pollution. Cadmium in industrial waste gas and waste water eventually enters the soil, causing some rice production areas to suffer from widespread cadmium pollution. It is recommended that the Chinese government strengthen relevant management and law enforcement efforts. In addition, some measures can be taken during rice cultivation to reduce the degree of pollution. This includes: adding lime and other substances to increase the pH of the soil; planting certain special types of rice, their ability to absorb cadmium and arsenic is low; Chinese researchers have discovered some of these rice in the past 10 years; using bioremediation, planting Absorb cadmium-absorbing rice and similar plants to remove cadmium from the soil, which can be used for power generation after harvest. Fruit And Vegetables Cutting Machine fruit and vegetables be cut into clivers, pcs, and cubes Industrial Vegetable Cutting Machine,Vegetable Cutting Machine,Commercial Vegetable Cutting Machine,Fruit Dicing Machine JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.spgreenhouse.com
Rice cadmium exceeds the standard: What are the hazards of human cadmium intake?