Bisphenol S in Food Packaging Materials

Bisphenol a (BPA) , as a typical environmental endocrine disruptor, is restricted by many countries because of its estrogenic activity, toxicological effect and serious pollution. As a result, many businesses are looking for alternatives to BPA. Bisphenol S (BPS) is a derivative of BPA where the propane group in the molecular structure is replaced by a sulfone group, in recent years, BPA has been widely used in the manufacture of household appliances that prohibit or restrict the use of BPA, as an industrial feedstock for the production of polycarbonate, polyester resins, polysulfone and polyether phenol Chemicalbook, and epoxy, such as food packaging materials, food can lining, milk bottles and paper products. BPS are structurally similar to BPA, and due to their use in baby bottles and food contact materials, they may migrate to food or beverages and be absorbed by the human body as a result of grease, acid, or environmental influences, BPS is a major route of human exposure to BPS.

BISPHENOL S is used in food and beverage cans to protect food from direct contact with metals, and in epoxy coatings to prevent the corrosion of metal cans and aluminum boxes by food ingredients. It is commonly used in the packaging of milk powder, meat products, and SURIMI products. Bisphenol s plays two main roles, one is because the epoxy coating is easy to remain hydrochloric acid in the polymerization process, can be neutralized by bisphenol s, the other is because the food in direct contact is mostly acidic, fatty substances, bisphenol s can replace the epoxy coating prior to the reaction of water, acid and other substances in food, thus improving the stability of the coating, but also to avoid contact with metal materials and food corrosion. BISPHENOL S is a colorant in heat-sensitive paper. The European Commission claims that 30% of the heat-sensitive paper goes into the waste paper recycling stream. So many paper products, such as kitchen paper, food cartons (pizza boxes, instant noodles cups, popcorn tubes, etc.) are made from recycled paper. So the recycling of thermal paper made BPS enter the paper recycling system and contaminate the food contact paper products. BISPHENOL S is one of the synthetic monomers of polyethersulfone. polysulfone is an amorphous, thermoplastic resin. Because of its polymer material structure, it has toughness, transparency and very high heat resistance (continuous use temperature up to 180 degrees, instantaneous high temperature up to 220 degrees.) , Light Weight, good mechanical properties, impact fracture resistance, high Chemical Resistance, good hydrolysis stability, microwave permeability, so for high-temperature heating and repeated high-temperature heating in the tableware are increasingly widely used. Examples include baby bottles, airline plates, microwave cookware, non-stick Pan Coatings (pes can be applied individually or in combination with fluoropolymers to make non-stick pans) , hot-water pipe joints, and some appliances that need to be heated (egg cookers, popcorn cookers, coffeemakers, etc.) .

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