title: Influence of lipid content and packaging methods on the quality of dried capelin (Mallotus villosus) during storage.
abstract: Capelin annual catch exceeds half a million tons in Iceland, with only a small quantity (<20%) of female with roe used for human food. There is a potential to use dried male capelin as a new product for human consumption, but its lipid content varies considerably (4-20% body weight). Earlier studies were more concentrated on the influence of drying conditions than the influence of storage conditions on the quality of dried fish, as dried fish are usually considered to be stable and safe during storage. Three batches of dried male capelin differing in lipid content were packaged and studied during 5 months storage at 22 ± 2 °C to establish appropriate lipid content at harvesting and product packaging method. Lipid composition, lipid hydrolysis and oxidation, sensory attributes and microbial activity were evaluated. Batches differed in composition and stability, with low lipid capelin constituting higher proportion of polyunsaturated fatty acids (22% lipid) than high lipid (18% lipid) capelin. Lipid oxidation was influenced by lipid content and packaging method, as accelerated oxidation occurred in high lipid and open packed capelin. Lipid hydrolysis was less influenced by packaging and was greater in low lipid capelin. High lipid capelin in open bags scored the highest for rancid odor. All batches were micro-biologically stable with colony-forming unit counts increasing less than log 1 (log 5-6) during 5 months storage.
authors.affiliation: Department of Food Science and Nutrition, University of Iceland, Vinlandsleid 14, 113 Reykjavík, Iceland.|KMFRI Kisumu Center, Kenya Marine and Fisheries Research Institute (KMFRI), P.O. Box 1881, Kisumu, 40100 Kenya.
authors.forename: O O
authors.initials: OO
authors.lastname: Cyprian
authors.affiliation: Matisohf./Icelandic Food and Biotech R&D, Vinlandsleid 12, 113 Reykjavík, Iceland.
authors.forename: K
authors.initials: K
authors.lastname: Sveinsdottir
authors.affiliation: Faculty of Food Technology, NhaTrang University, NhaTrang, Vietnam.
authors.forename: M V
authors.initials: MV
authors.lastname: Nguyen
authors.affiliation: United Nations University Fisheries Training Programme, Skulagata 4, 121 Reykjavík, Iceland.
authors.forename: T
authors.initials: T
authors.lastname: Tomasson
authors.affiliation: Department of Food Science and Nutrition, University of Iceland, Vinlandsleid 14, 113 Reykjavík, Iceland.|Matisohf./Icelandic Food and Biotech R&D, Vinlandsleid 12, 113 Reykjavík, Iceland.
authors.forename: G
authors.initials: G
authors.lastname: Thorkelsson
authors.affiliation: Department of Food Science and Nutrition, University of Iceland, Vinlandsleid 14, 113 Reykjavík, Iceland.|Matisohf./Icelandic Food and Biotech R&D, Vinlandsleid 12, 113 Reykjavík, Iceland.
authors.forename: S
authors.initials: S
authors.lastname: Arason
keywords: Dried capelin; Lipid content; Packaging; Stability