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Tromsø, Norway

Herland H.,Nofima Marin | Cooper M.,Nofima Marin | Esaiassen M.,Nofima Marked | Olsen R.L.,University of Tromso
Journal of the World Aquaculture Society | Year: 2011

The aims of this study were to investigate effects of dietary mineral supplementation on chemical and sensory quality parameters of fresh farmed cod fillets and on the quality of salt-cured farmed cod. Farmed cod were fed three experimental diets with different levels of mineral supplements (no supplementation, supplementation without zinc and copper, full supplementation) for approximately 2 yr. After slaughter, one-third of the experimental fish were subjected to chemical and physical analysis, another third were used for sensory analysis and the remaining fish were salt cured. Potassium, copper, and muscle protein were higher in muscle tissue of cod fed full supplementation than cod fed without supplementation. Instrumental color analysis showed that the cut side of fresh fillets of cod fed full supplementation were slightly more green and yellow than fillets of cod fed without extra supplements. A sensory panel could, however, not detect any differences between heated fresh cod given feed with or without mineral supplements. However, the quality of salt ripened cod which had received a complete mineral supplement in the diet was reduced because of increased yellowness, probably caused by the increased level of copper in the muscle. © Copyright by the World Aquaculture Society 2011.

Karlsen K.M.,Nofima Marked | Olsen P.,Nofima Marked | Donnelly K.A.-M.,Nofima Marked
British Food Journal | Year: 2010

Purpose - The purpose of this study is to examine where product, process and traceability information is systematically lost at a mineral water bottling plant. It aims to highlight areas where traceability could be improved and to suggest changes that could be made to improve traceability. It also aims to examine the implications of these changes for the current system. Design/methodology/approach - Process mapping was carried out at a mineral water bottling plant to investigate the flow of material and information. The results were analyzed to identify the critical traceability points (CTPs) in the production process where information is lost. Findings - One of the CTPs at the mineral water bottling plant was the lack of a link between product, process and traceability information for the screw caps. Research limitations/implications - This is a study of an individual case, which limits the generalizations that can be made. Practical implications - Procedures need to be established at the mineral water bottling plant in order to achieve traceability. All the information about the resources used in production could be linked to a "best before" date on each mineral water bottle. Originality/value - The authors have found few similar case studies in the published literature. This case study can be of value to other research institutes and industries where the focus is on traceability. It could also be of interest to researchers working with information technology systems, ontology/metadata schemes, cost/benefits analyses and the impacts of traceability. The implications of traceability highlighted in this paper can be of use to regulatory authorities in their decision making processes. © Emerald Group Publishing Limited.

Herland H.,Nofima Marin | Esaiassen M.,Nofima Marked | Cooper M.,Nofima Marin | Olsen R.L.,University of Troms and oslash
Aquaculture Research | Year: 2010

Farming of Atlantic cod makes it possible to supply cod throughout the year. The aim of this study was to investigate the effects of season and postmortem ice storage on the quality parameters of farmed cod. Farmed Atlantic cod were sampled from the same pen in the period February 2006-March 2007. Cod whole body and somatic weight, condition factors and hepatosomatic index were all affected by season, all decreasing during maturation and spawning in the winter. Muscle pH and water were influenced by season, increasing during maturation and spawning and then decreasing after spawning. Season also affected the colour of the fillet. There was a significant increase in whiteness post-spawning and a decrease during the second maturation. Water-holding capacity (WHC), levels of trimethylamine oxide and trimethylamine, as well as microbiological data, did not vary due to season. Muscle pH, water content, WHC and microbial counts increased during storage for all samplings. © 2009 The Authors. Journal Compilation © 2009 Blackwell Publishing Ltd.

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