P40 Evaluating the efficiency of commercial inhibitors in preventing blueing in snow crab

P40 Evaluating the efficiency of commercial inhibitors in preventing blueing in snow crab

Diana Lindberg1, Sten Siikavuopio1, Kersti Øverbø1, Grete Lorentzen1 and Ragnhild Whitaker1

1Nofima AS, NOR

The snow crab fisheries in the Barents Sea are well established with demonstrated harvestable biomass, and provides enormous potential for creating a profitable industry for northern Norway. In terms of quality, one of the largest problems for this industry is discoloration of the crab, also known as melanosis, or blueing. Snow crabs are generally regarded as more susceptible to melanosis than e.g. king crab, and discolorations results from a cascade of events initiated by polyphenol oxidases. In this project, different commercially available inhibitors previously tried on other crustaceans have been examined on parts of, and whole, snow crabs. Results show that a lowering of the pH, as well as the well-known inhibitor 4-hexylresorcinol, are efficient inhibitors in prevention of blueing in snow crabs.