The topics from the results of the studies conducted by the author during the past three decades are reviewed. The studies are mainly related to oligo- and polysaccharides and include the following projects: 1. Glucobioses in Japanese rice wine (Sake) and Koji extract. 2. Chemical synthesis of kojibiose and nigerose. 3. Acetolysis of gluco-oligosaccharides and glucans. 4. Structural studies of Konjac glucomannan. 5. Biochemical studies of dextrans. 6. Biosynthesis of fungal glycogen. 7. Structural studies of cell wall polysaccharides. 8. Biochemical studies of plant cell wall polysaccharides. 9. Some polysaccharide degrading enzymes including an α-1, 3- glucanase of a Streptomyces species, a dextranase capable of splitting α-1, 2-linkage at the branch point, and a /3-glucosidase of Pyricularia rr yzae.
