Lipid oxidation is one of the most prevalent chemical reactions
occurring during processing and storage of food products. This
reaction results in reduced nutritional value and short shelf-life;
in some cases toxic and carcinogenic compounds may form
(Chong, Chang, Mei Sia, & Yim, 2015; Zanardi et al., 2009). Lipid
hydroperoxides, termed primary lipid oxidation products, form
during the early stages of lipid oxidation and increase when the
food product starts to deteriorate. As oxidation continues, their
level reaches a plateau and then decreases, due to progression to
secondary oxidation products (Kim et al., 2013). These include
hydrocarbons, acids, lactones, esters, ketones and aldehydes (Fu,
Lin, Xu, & Wang, 2015). Thus, due to the progressive nature of this
reaction, it is necessary to employ more than one assay to monitor
the reaction, since a single assay cannot measure the whole
process, nor can it be equally useful at all stages of oxidation. Furthermore, it is also crucial to identify specific oxidation products
formed at each stage of the reaction. As a result, well-established
lipid oxidation assays are aimed at quantifying the loss of reactants
or formation of oxidation end-products