*3.3. Configurational Analysis of Natural Alloxanthin*

## 3.3.1. Animal Materials

Scallop *Mizuhopecten yessoensis* was provided from Hokkaido Research Organization, Abashiri Fisheries Research Institute, Hokkaido, Japan. Oyster *Crassostrea gigas*, and sea squirt *Halocynthia roretzi* were purchased from fisheries market at Kyoto city. Pacific pearl oyster *Pinctada margaritifera* was provided from a pearl aquaculture industry, Ishigaki city, Okinawa Prefecture. Freshwater bivalve *Unio douglasiae*, crucian carp *Carassius auratus grandoculis*, and catfish *Silurus asotus* were purchased from Katata fisheries cooperative, Shiga Prefecture. Biwa trout *Oncorhynchus masou rhodurus* was purchased from Nango Fisheries Center, Shiga Prefecture. Biwa goby *Gymnogobius isaza* and lake shrimp *Palaemon paucidens* were purchased from fisheries market at Maibara city.
