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Temperature is more and more people, everyone in the ways of reducing fever, cold drink is one of them, after the sun scorching outdoor, home to open the refrigerator take out a cold bottle of water or beverage, instant cold feeling, such cooling methods was used widely in the summer. But some weibo recently said: "don't put plastic bottles of water in the freezer refrigeration, because plastic bottles releases dioxins in such conditions." Caused numerous netizen consternation, "to retire after chilled bottled drinks?"

"Dioxin is a colorless, odorless fat-soluble substances, so very easy accumulated in organisms, experience have serious harm to people. In addition to the toxicity of cancer, also has the reproductive toxicity and genetic toxicity, directly endanger the health of children and grandchildren and lives." Food at northwestern university institute of chemical engineering professor Cao Hui explained that according to dioxins generated by the way, the dioxin hot not cold, only released when heating or burning in the plastic product, contact with oil and organic solvent solubility will greatly improve, but definitely not released at low temperature, so plastic products stored in the refrigerator food security is quite high.

Cao Hui said, indeed many taboos, when using plastic containers of different plastic products have a take arrows at the bottom of the triangle, triangle there are a number, according to the properties of the Numbers represented by the plastic material, specification use to guarantee health and safety. "1" PET: heat resistant to 65 ℃, resistant to cold - 20 ℃. "2" have used for cleaning supplies, bath products, etc. "3" is best not to contact with food, also don't let it heat; "4" is used in the microwave food; "5" is to be able to in the microwave heating material, resistant to high temperature of 130 ℃, be careful cleaning can be repeated use; "6" is used in the manufacture of bowl of instant noodles boxes, foamed snack box is qualitative, not in a microwave, cannot be used for packaging hot food. PC plastic products, disinfection temperature does not exceed 100 ℃, don't put it in microwave sterilization and replace it is best to use only a few months.