[1] Commiss European Communities, Joint Res Ctr, Inst Hlth & Consumer Proct, I-21020 Ispra, VA, Italy
[2] Minist Agr Fisheries & Food, Cent Sci Lab, York YO41 1LZ, N Yorkshire, England
[3] State Univ Ghent, Dept Food Technol & Nutr, B-9000 Ghent, Belgium
[4] Univ Hohenheim, Dept Food Chem, D-70599 Stuttgart, Germany