Precautions For Non-stick Pots

Why can't non-stick pots make acidic food?

Fluoride expert, China Institute of Corrosion and Protection of non-metallic materials professional committee deputy secretary-general, Shandong University Institute of Chemical Engineering Director Professor Guan Congsheng said: "Teflon has a birth defect, that is, its binding strength is not high, non-stick pot is not completely covered with Teflon coating, there are always some parts exposed to metal surface." Acids tend to corrode the metal body, which expands once it is corroded, raising the coating and causing the coating to fall off in large areas. The relevant standards of the Ministry of Health are based on this principle. Professor Pipe also believes, "The coating is mainly used for anti-stick, just sprayed a thin layer, coupled with the combination is not secure, with a shovel stir-fry is certainly not possible." "

Which are acidic foods?

"Acid foods include a variety of meats, eggs, sugar, rice, etc. Professor Yu Kang, director of the nutrition department at Beijing Concord Hospital, explained that food is acidic or alkaline, not by taste, but by scientific means to detect the type and quantity of elements contained in food to make a judgment. Many of the foods eaten on a daily basis are acidic.

Can't make acidic food in all non-stick pots?

Wang Fu, director of the National Key Laboratory for Metal Corrosion and Protection at the Institute of Metals of the Chinese Academy of Sciences, said it depends on the materials used in the pot.

The non-stick pot body sold on the market is mainly made of 3 materials:

aluminum alloy, the surface has a thicker layer of alumina;

Stainless steel, the surface has a layer of chromium oxide, corrosion resistance is strong, corrosion is slow;

Iron, iron is easily corroded by large areas of acid, thus lifting the coating. Wang Fu will emphasize: "Non-stick pots made of corrosive metals such as iron cannot be made of acidic food." Non-stick pots made of corrosive metals try not to make acidic food. "

Using nano-ceramics as a non-stick coating, no matter which metal is used in the pot can achieve a non-corrosive effect, can be assured of the production of acidic food.