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Lipid oxidation is a big contributor to food deterioration. The objective of this study was to develop an intelligent film for visually detecting lipid oxidation, based on the colorimetric reaction of Schiff’s reagent and aldehydes—the major volatile lipid oxidation products. A polyvinyl alcohol (PVA) film containing Schiff’s reagent was formed, with the elasticity modulus of 0.27 MPa and the tensile...
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