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Effects of Added Phosphates on Lipid Stability During Salt Curing and Rehydration of Cod ( Gadus morhua )
Author(s) -
Nguyen Minh Van,
Arason Sigurjon,
Thorkelsson Gudjon,
Gudmundsdottir Agusta,
Thorarinsdottir Kristin Anna,
Vu Boi Ngoc
Publication year - 2013
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-012-2175-y
Subject(s) - tbars , gadus , lipid oxidation , chemistry , thiobarbituric acid , food science , hydrolysis , lipid peroxidation , peroxide value , chromatography , biochemistry , antioxidant , fishery , biology , fish <actinopterygii>
Effects of added phosphates on retardation of lipid oxidation of salted cod during processing, storage and after rehydration were investigated. Lipid hydrolysis progress and development of color, primary and secondary lipid oxidation products and fluorescence intensities were determined. Added phosphates significantly retarded lipid hydrolysis and lipid oxidation progress, resulting in lower free fatty acid, lipid hydroperoxides (PV), thiobarbituric acid‐reactive substances (TBARS) as well as fluorescence intensities (δ F or and δ F aq ). Significant correlation between the lipid oxidation products (PV, TBARS, δ F or and δ F aq ) and yellow/brownish discoloration ( b* value) of salted cod was observed. Principal component analysis showed that TBARS, b* value and δ F or were the strongest indicators of lipid oxidation during salting and storage.