URASHIMA Tadasu Professor

ThemeComparative study of milk oligosaccharides and clarication of its biological function, Development of high functional dairy lactic acid bacteria

My DreamThe clarification why the mammalian has evoluved during the study of milk oligosaccharides
  • Dairy Chemistry
Field Strucural biochemistry, Functional biochemistry, Glycobiology, Dairy science
Keyword Milk oligosaccharides, Milk, Dairy lactic acid bacteria, Milk products


I have studied milk oligosaccharides of many mammalian species including monotremes (platypus and echidna), monotremes (kangaroo, wallaby, koala, possum, quoll etc), and eutherians (primates, carnivoras,artiodactyla, cetacea, etc)for more than 30 years. There are homology and heterogeneity of milk oligosaccharide structures among mammalian species with respect of species evolution and their living strategies. I try to know how milk oligosaccharides have evolved during the mammalian evolution.The strains of dairy lactic acid bacteria sometimes produce extracellular polysaccharide, which causes the viscosity of fermented product.In a few case, such polysaccharide has the beneficial functions such as immuno modulation. I have been studing the chamical structures and functions of these polysaccharides.

List of current research topics

  • Comparative aspect of milk oligosaccharides
  • Sugar nucleotides in milk
  • Structure and function of extracellular polysaccharides produced by dairy lactic acid bacteria.
Academic degree D. Agr
Self introduction

I was born in Hiroshima. I have been studied oligosaccharides in several mammlian milk with respect of evolution. I have published a popular scientific book entitled "Evolution of milk and mammary glands".

Room addressGeneral Research Building 3
Mail address urashima atmark obihiro.ac.jp


Research Department/Department of Life and Food Sciences/Division of Food Science/Section of Biomolecular Structure and Function
Faculty (Unit)Food Science Program
Related industries Milk products technology, Dairy industry, Dairy science, Food
Affiliated academic society Dairy Science Association, Glycoscience Association, Bioscience and Biotechnology Association, Applied Glycoscience Association, Zootechnical Science Association
Academic background 1980 Tokyo University of Agriculture & Technology
1982 Tohoku University, Master course of Agriculture
1986 Tohoku University, Doctor course of Agriculture
1986 Obihiro University of Agriculture and Veterinary Medicine, Assistant Professor
1994 Obihiro University of Agriculture and Veterinary Medicine, Associate Professor
2003- present
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