When industrial rosin or asphalt is depilated, the boiled liquid is generally reused, and the color is dark and turbid. The poultry treated in this way may have black marks on the eyes, mouth, nostrils and other parts, from which the unhairing mode can be judged. In particular, there will be black residual liquid in the nostrils of chickens and ducks, which is not found in the nostrils of depilators and artificially depilated chickens and ducks.
Asphalt contains carcinogens. If people eat poultry depilated with asphalt, it will do serious harm to their health. The relevant departments also expressly stipulate that asphalt cannot be used to depilate poultry.
Industrial rosin is not included in the list of processing AIDS for food industry in the National Hygienic Standard for the Use of Food Additives. It is illegal to use industrial rosin to remove duck feathers. The "rosin" that can be used for hair removal must be glyceride, which is also commonly known as "edible rosin". But industrial rosin and edible rosin are not easy to distinguish in appearance.
Rosin depilation method has been applied in poultry processing in China. However, industrial rosin has a high melting point, and contains high molecular toxic substances such as alkene, aldehyde and alcohol, which has a series of problems, such as discoloration, odor, high breakage rate, carcinogenicity after eating, and inability to export products. Therefore, the state explicitly prohibits the use of industrial rosin for hair removal.
Edible poultry depilated with industrial rosin is harmful to health, because in the process of depilation with industrial rosin, heat can slightly expand the pores of chickens and ducks, so industrial rosin will penetrate and remain on the surfaces of chickens and ducks, which will cause harm to people to varying degrees after eating.
In particular, repeated heating and use of industrial rosin will produce a variety of substances harmful to human body. When people eat this kind of chickens and ducks, the lead and toxins in the body will cause damage to the liver and kidneys, and even cause cancer. The lead content of industrial rosin is high, and it will not be excreted after eating it. Deposition will damage the intelligence of growing children to varying degrees.
At the same time, industrial rosin will undergo ammonolysis reaction at high temperature, which will produce a lot of ammonia, damage the health of operators and pollute the surrounding environment.
Phoenix. Com- evil! Pulling duck feathers with rosin mixed asphalt