1. Department of Biological Chemistry, College of Bioscience and Biotechnology, Chubu University, 1200 Matsumoto, Kasugai, Aichi 487-8501, Japan
2. San-Ei Gen F.F.I., Inc., 1-1-11 Miwa, Toyonaka, Osaka 561-8588, Japan
3. National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki, Kawasaki, Kanagawa 210-9501, Japan
4. Fuji Baking Group Research Laboratory, 1-50 Matsuzono, Mizuho, Nagoya 467-0065, Japan