Reactive carbonyl compounds (RCCs) can react with proteins and nucleic acids, destroying their normal physiological function, and cause ""carbonyl stress."" RCC levels are closely related to inflammation, aging, cancer, and Alzheimer's disease. RCCs are mainly formed during the oxidation of polyunsaturated fatty acids. Aquatic products and meat products are rich in polyunsaturated fatty acids, and RCCs can be produced during storage and processing, resulting in a food safety risk. Research progress in detection methods, accumulation behavior, c...