Acronym NA
Category
Seafood Processing
Title Automatisk fjerning av svarthinne hos torsk til saltfisk og klippfisk: Fase 2 - Automatic removal of black skin in cod for salted fish and clipfish: Phase 2 Programme National Programme
Instrument (FP6)
Contact Type (FP7)
Strand (Interreg)
NA
Theme (FP7)
Activity Area (FP6)
Regional Area (Interreg)
Action (COST)
NA
Specific Programme (FP7)
NA
Funding source National Coordinator Morten Bondø Coordinator email Morten.Bondo@sintef.no
Coordinator institution
SINTEF-SFH - SINTEF Fisheries and Aquaculture (Norway)
Institutions involved
NA
Start year 2013 End year 2015 Funding (€) € 220,567 Website https://www.fhf.no/prosjekter/prosjektbasen/900914/ Summary In the first project, both chemical and mechanical characterization were performed. The results showed that the black membrane is mainly of a protein nature with a large element of collagen. The strength of the black skin increases with the thickness which increases with the size of the fish. Small fish have a thin and weak black skin that makes it difficult to pull it off in whole pieces. The black membrane is usually more firmly attached to the peritoneum by the abdominal incision and the swim bladder, but this can vary between individuals. No significant differences were found in the properties and composition of the Pacific skin of the Pacific (Gadus macrocephalus L.) and Atlantic cod (Gadus morhua L.).
In the next project, several rounds of brainstorming and creative thought processes were carried out to find possible ways to remove and / or loosen the black skin. The problem was also a relevant topic in student assignments at the Department of Product Development and Materials at NTNU. Many of the solutions have been tested, such as mechanical removal with various brushes and "messy" materials, chemical removal, bleaching and high-pressure blowing with air and water.
Goal to continue the work done in the mentioned projects so that all uncertainties related to the raw material's significance for the result are removed or reduced to a level that allows the development of equipment for more than 95% automatic removal of black skin or 50% reduction in labor costs can carried out without too much risk. The technology must not lead to reduced yields or adversely affect the quality of the end product.
Sub-goals
• To build a laboratory model / freezer drum that makes it possible to map how different factors affect the effect of blackhead removal. The model must be close to the final version and have automatic scraping of the black film.
• To carry out laboratory tests to identify and document optimal work areas for the technology with regard to relevant qualities of the raw material.
• To provide clear guidelines for the design and construction of industrial equipment for automatic removal of black film which both makes the road to developed technology as short as possible and which satisfies requirements from the industry in terms of quality and capacity.
• To build a laboratory model that is as realistic as possible for industrial use, and at the same time be as close to a production version as possible.
Keywords
Process efficiency;
Fish;
Cod;
Engineering;
Fish products;
Prototype;
Fish quality;
Marine Region
76
Not associated to marine areas
0
Marine Region Map
