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Antioxidants and Functional Components in Aquatic Foods by Hordur G. Kristinsson

By Hordur G. Kristinsson

Antioxidants and practical parts in Aquatic meals compiles for the 1st time the earlier and current examine performed on seasoned and antioxidants in aquatic animals. The e-book addresses a space of utmost value for aquatic meals, considering the fact that lipid oxidation ends up in this type of huge variety of caliber difficulties. a lot of those difficulties also are obvious in different muscle established foods,

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These reactions are reversible but further rearrangements lead to the ­formation of irreversible adducts that in general result in loss of protein surface charge. In addition, α,β-unsaturated aldehydes can undergo Michael addition at the protein amino group side chain (Berlett and Stadtman 1997). Strictly speaking, such mechanisms are not considered to be direct oxidation of the protein but result in the addition of carbonyl groups to the protein via covalent binding between the fatty acid moiety and the protein.

It is clear that even if the mechanisms are not fully understood the radical transfer mechanism in fish muscle should be investigated further. A recent investigation performed in a washed cod model system revealed that Mb was inducing protein oxidation and affecting cathepsin, an enzyme that is important in fish muscle degradation post mortem (Egelandsdal et al. 2010). No mechanism was proposed but earlier investigation reported inactivation of cathepsin via hypervalent myoglobin species (Miura et al.

1988. Lipid peroxidation: Some problems and concepts, in Oxygen Radicals and Tissue Injury Symposium (ed. B. Halliwell). Bethesda, MD: Federation of American Societies of Experimental Biology, pp. 9–19. Halliwell, B. and Chirico, S. 1993. Lipid peroxidation: its mechanism, measurement, and significance. American Journal of Clinical Nutrition 57(5): 715S–724S. Halliwell, B. and Gutteridge, J. M. C. 1985. The chemistry of oxygen radicals and other oxygen derived species, in Free Radicals in Biology and Medicine (eds B.

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