Bisphenol a analysis
The container part of soy milk makers that holds the soy milk is typically made from materials containing Bisphenol A (BPA). When soy milk is produced at high temperatures, Bisphenol A BPA can easily leach out. One study revealed that the BPA content in disposable paper cups is 30 times higher than that in disposable plastic cups. BPA is extensively used in common receipts and fax paper, with concentrations a hundred times greater than those found in baby bottles. Poor quality or improper use of plastic cups and kettles may lead to BPA leaching. Currently, mass-produced commercial aluminum beverage cans manufactured by Coca-Cola contain Bisphenol A BPA in their inner linings. Some canned foods also contain Bisphenol A BPA in the sealing rings of metal lids, and it can even be present in the plastic linings of the cans.