抄録
Intact pyridoxine glucoside showed about 20% of microbiological activity of equivalent mole of pyridoxine for Saccharomyces carlsbergensis 4228 ATCC 9080. The activity was gradually increased accompanied with the prolonged incubation. It seems that pyridoxine glucoside is hydrolyzed to pyridoxine and glucose by α-glucosidase of Saccharomyces carlsbergensis 4228 ATCC 9080 and can be bioassayed as pyridoxine. Hydrolysis of pyridoxine glucoside by autoclaving in 0.055 N sulfuric acid yielded pyridoxine quantitatively. Pyridoxine glucoside was found to be as stable as pyridoxine-borate complex against irradiation of ultraviolet light and heating, while pyridoxine was less stable.
