1. Danish Institute for Fisheries Research, Department of Seafood Research, Building 221, Technical University of Denmark, DK-2800 Lyngby, Denmark, Institute for Food Science, University of Hannover, Wunstorfer Strasse 14, D-30453, Hannover, Germany, and Department of Biotechnology, Building 221, Technical University of Denmark, DK-2800 Lyngby, Denmark