Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and can often be described by a chemical equation.
DHA is found in cod liver oil, fatty fish, and in smaller concentrations in the organs and fats of land animals. Omega-6 Fats Shorter-chain: The shorter-chain form of omega-6 is linoleic acid (LA), which is the most prevalent PUFA in the Western diet, is abundant in corn oil, sunflower oil, soybean oil and canola oil.
PU is short for polyurethane. This is a food safe and rubbery textile that is made from a foamy-like plastic. It's a material used for food trays and other products you serve food on. However it doesn't hold up well and can warp when heated in just the hottest of running water.