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Quality of Lipids During Frozen Storage of Polychaete (Alitta virens) - a Low Trophic Marine Resource Relevant for Aquaculture Feed

Abstract

Lipid quality during frozen storage of the low trophic marine resource polychaete (Alitta virens) was evaluated after blanching, vacuum packing, and different storage temperatures (−23°C vs −27°C). In non-blanched samples, free fatty acid (FAA) reached a level of 15–20% after 12-months of frozen storage. 1H and31P nuclear magnetic resonance (NMR) analyses showed that the increase in FFA could be attributed to both hydrolysis of phospholipids and triacylglycerols. Vacuum packing prevented lipid oxidation. Blanching hindered lipid hydrolysis and is thereby recommended to preserve valuable phospholipids during long-term frozen storage of polychaete, a resource that has attracted growing interest for use in aquaculture.
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Category

Academic article

Language

English

Affiliation

  • SINTEF Ocean / Fisheries and New Biomarine Industry

Year

2024

Published in

Journal of Aquatic Food Product Technology

ISSN

1049-8850

Volume

33

Issue

2

Page(s)

161 - 176

View this publication at Norwegian Research Information Repository