Our laboratory aims to improve understanding of marine product constituents such as enzymes, blood components, glycoproteins and oligosaccharides that have effects on its quality and hygiene. Our specific interests are reactions of these components that occur in marine products during storage and processing, and how they could be controlled for quality improvement. Recent research topics are as follows: (1) Comparative pharmacology of fish drugs in cultured fish. (2) Study on glycoproteins of fish red blood cell membranes. (3) Exploring novel biocatalysts from marine bioresources for high value-added chemicals production and developing their application for marine products.