1. Fish Muscle Research Group, Gatty Marine Laboratory, School of Biology, University of St. Andrews, Fife, Scotland, KY16 8LB, United Kingdom, BioMar UK Limited, North Shore Road, Grangemouth Docks, Grangemouth, Scotland FK38UL, United Kingdom, and Uniq Prepared Foods Limited, Annan Dumfriesshire, Scotland DG126RX, United Kingdom