1. Department of Biological Production, Faculty of Bioresource Sciences, Akita Campus, Akita Prefectural University, 241-438 Kaidobata-Nishi, Shimoshinjo-Nakano, Akita 010-0195, Japan
2. Department of Biotechnology, Faculty of Bioresource Sciences, Akita Campus, Akita Prefectural University, 241-438 Kaidobata-Nishi, Shimoshinjo-Nakano, Akita 010-0195, Japan