1. ATO.BV, P.O. Box 17, NL-6700 AA Wageningen, The Netherlands; Nestle Research Center Lausanne, P.O. Box 44, Vers-chez les Blanc, CH1000 Lausanne 26, Switzerland; Findus Research and Development, P.O. Box 530, SE-267 25 Bjuv, Sweden; and Diosynth BV, P.O. Box 20, 5340 BH Oss, The Netherlands