Chicken surimi fortified by omega-3 fatty acid addition: manufacturing and quality properties.

BACKGROUND The meat of spent hens is hard to use owing to its small amount and poor quality. A washing process to remove sarcoplasmic proteins and other impurities can prolong the shelf life of surimi-like products. Owing to the benefits of omega-3 polyunsaturated fatty acids (ω-3 PUFAs), functional foods fortified with ω-3 PUFAs are increasingly being marketed. Hence, in this study, ω-3 FA-fortified chicken surimi was manufactured, and how to ameliorate its lipid peroxidation during frozen storage was investigated. RESULTS A 0.10% (w/v) solution of sodium chloride (NaCl) instead of distilled water in the third washing step decreased (P < 0.05) myofibrillar protein loss and moisture content of spent hen breast protein recoveries. Oil droplets in fish, flaxseed or soybean oil-added chicken surimi were well distributed. Moreover, flaxseed oil addition increased (P < 0.05) total ω-3 FAs and ω-3/ω-6 FA ratio, while only fish oil provided long-chain PUFAs. Oil addition decreased (P < 0.05) hardness and gumminess of chicken surimi, while flaxseed oil resulted in more (P < 0.05) yellow surimi than fish and soybean oil. Fish oil-added samples showed higher (P < 0.05) lipid oxidation than flaxseed or soybean oil-added samples under -15 to -10 °C storage, but α-tocopherol addition ameliorated it. CONCLUSION A novel semi-manufactured chicken surimi product with nutritional benefits could be developed by fortification with fish or flaxseed oil.

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