Lipid oxidation can be inhibited by eliminating oxygen, but this is practically difficult and
even if it could be done, pre-existing lipid hydroperoxides can breakdown to rancid flavors
in the absence of additional oxygen. Instead antioxidants can be added to limit the rate of
the reaction. For example, metal chelators (e.g. EDTA and citric acid) can bind the metal
ions that catalyze the breakdown of lipid hydroperoxides while BHA and BHT are chain
breaking antioxidants that react with radical intermediates and break the chain reaction
before rancid flavors are generated.