1. Chair of Marine Chemical Resource Development, Graduate School of Fisheries Sciences; Hokkaido University; Hakodate Hokkaido Japan
2. Fisheries Research Department, Hokkaido Research Organization, Abashiri Fishries; Research Institute; Hokkaido Japan
3. Department of Research and Development; Hokkaido Industrial Technology Center; Hakodate Hokkaido Japan
4. Laboratory of Humans and the Ocean, Faculty of Fisheries Sciences; Hokkaido University; Hakodate Hokkaido Japan
5. Laboratory of Marine Chemical Resource Development, Faculty of Fisheries Sciences; Hokkaido University; Hakodate Hokkaido Japan