1. Department of Chemistry, Biotechnology, and Food Science, Agricultural University of Norway, N-1430 Ås, Norway; MATFORSK, Norwegian Food Research Institute, N-1430 Ås, Norway; SINTEF Fisheries and Aquaculture, N-7465 Trondheim, Norway; and Norwegian Institute of Fisheries and Aquaculture Research, N-5141 Fyllingsdalen, Norway