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|Título:||Characterisation of high added value compounds in wastewater throughout the salting process of codfish (Gadus morhua)|
Cruz, Isabel B.
Jorge, Ruben Ferreira
Malcata, F. Xavier
Castro, Paula M.L.
Pintado, Manuela E.
Free amino acids
Modelling of release
|Citação:||FERRARO, Vincenza ...[et al.] - Characterisation of high added value compounds in wastewater throughout the salting process of codfish (Gadus morhua). Food Chemistry. ISSN 0308-8146. Vol. 124, n.º 4 (2011), p. 1363-1368|
|Resumo:||In Portugal Atlantic codfish (Gadus morhua) is dry-salted with food-grade marine salt for 6 days. During this process, codfish incorporates salt and drains away water up to 22%(w/w) of its weight, which contains important compounds, such as free amino acids, peptides and proteins. Hence, the chemical profile of such water, composed of various soluble nitrogen fractions, was thoroughly determined. Along the salting process, the ratio of water released to trichloroacetic acid-soluble nitrogen remained constant, but the proportion between water released and phosphotungstic acid-soluble nitrogen decreased because of proteolysis. The concentration of free amino acids increased from 2.68 g/l to 5.41 g/l within 6 days, but myofibrillar proteins were found to be approximately constant, ca. 3.31 g/l. Creatine, aspartic and glutamic acids, glycine, taurine and tryptophan were the dominant free amino acids, the release of which was successfully modelled. Total biogenic amines concentration in wastewater at the end of the salting process was ca. 100 mg/kg.|
|Versão do Editor:||doi:10.1016/j.foodchem.2010.07.090|
|Aparece nas colecções:||CBQF - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review|
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