1. Dainichiseika Color & Chemicals Mfg. Co., Ltd.; Tsukuba Ibaraki 305 Japan
2. National Food Research Institute; Ministry of Agriculture; Forestry and Fisheries, Kannondai, Tsukuba Ibaraki 305 Japan
3. Process Engineering Lab., National Food Research Institute; Ministry of Agriculture; Forestry and Fisheries 2-1-2, Kannondai, Tsukuba Ibaraki 305 Japan