1. ; Department of Food Science; Obihiro University of Agriculture and Veterinary Medicine; Obihiro 080-8555 Japan
2. ; Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan
3. ; Food and Biotechnology Innovation Project, New Industry Creation Hatchery Center (NICHe); Tohoku University; Sendai 980-8579 Japan
4. ; Food and Health Science Research Unit, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan