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Enzymatic hydrolysis of cod heads – effect of freezing and thawing on the quality and composition of protein hydrolysates

Enzymatic hydrolysis of cod heads – effect of freezing and thawing on the quality and composition of protein hydrolysates

Category
Academic chapter/article/Conference paper
Abstract
New processing methods are needed to convert cod heads into more profitable and marketable products. In this study the possibilities of freezing and thawing of cod heads before enzymatic hydrolysis and the effect on the quality of resulting fractions was investigated. Cod heads were frozen minced or whole and kept in frozen storage for 20-21 days, thawed by air (4 ºC for 20 hours) or water immersion (6-10 ºC for 3 hours) and subsequently hydrolysed by Protamex® (30 or 60 minutes). Results showed that the tested pre-treatments like mincing, freezing and thawing had no effect on the resulting protein hydrolysates fractions and no significant differences were found in the resulting yields and chemical composition of the hydrolysates.
Client
  • Research Council of Norway (RCN) / 294539
Language
English
Affiliation
  • SINTEF Ocean / Sjømatteknologi
  • Norwegian University of Science and Technology
Year
2020
Publisher
International Institute of Refrigeration
Book
6th IIR Conference on Sustainability and the Cold Chain - Proceedings
Issue
6
ISBN
978-2-36215-036-4