A report released recently by the Center for Science in the Public Interest of the American Consumer Advocacy Organization stated that researchers in its organization have found a caramel in product ingredients in four products: Coca Cola, Pepsi Cola, Diet Coke and Pepsi Light Co. The chemical called 4-methylimidazole is used in the chemical. California courts have also ruled that coloring beverages containing more than 29 micrograms of 4-methylimidazole must be accompanied by a cancer warning sign. What is 4-methylimidazole? Can it cause cancer?
The experimental results of 4-methylimidazole carcinogenesis were limited to animals
Wu Zhigang, professor of Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, said that determining whether or not a substance is carcinogenic should mainly depend on two conditions. On the one hand, it depends on the ranking of the substance in the international cancer agency. On the other hand, it depends on the content of the substance in food.
International cancer agencies usually have sufficient evidence to prove that their carcinogenic substances are classified as a class of carcinogens, such as formaldehyde, dioxins, etc.; there will be limited evidence to support their possibility of human carcinogenesis, but there is some evidence to prove the carcinogenicity of experimental animals. The substances are divided into two types of carcinogens. At present, it can be proved that the experimental result of 4-methylimidazole carcinogenesis is limited to animal experiments. From this perspective, it is not a very strong carcinogen. On the other hand, judging the carcinogenicity of a substance depends on the amount of human body intake. If it fails to reach a certain dose standard, it will not cause too much harm to the human body.
Associated biological content and production process have a lot to do
Wu Zhigang said that 4-methylimidazole is a companion organism for the production of caramel pigment from ammonium sulfite. The content of concomitant organisms depends largely on the production process. Although caramel color has a wide range of applications in daily life, such as the production of soy sauce and vinegar may also be used. However, these caramel colors do not necessarily contain 4-methylimidazole. On the one hand, they are related to the raw materials used to produce caramel color. On the other hand, it depends on whether the production process can meet certain standards.
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