1. Cerealia R & D AB, SE-153 81 Järna, Sweden.
2. Corresponding author. Phone: +46851978950. Fax: +46851978965. E-mail: helena.fredriksson@cerealia.se
3. Swedish University of Agricultural Sciences, Department of Food Science, PO Box 7051, SE-750 07 Uppsala, Sweden.
4. National Food Administration, PO Box 622, SE-751 26 Uppsala, Sweden.