1. ; National Food Research Institute; Ministry of Agriculture, Forestry and Fisheries; 2-1-2, Kannondai 305-8642 Tsukuba, Ibaraki Japan
2. Nippon Lever B.V., Haga-gun; 321-3325 Tochigi Japan
3. ; University of Tsukuba; 305-8572 Tsukuba, Ibaraki Japan