Immobilization of Yeast Cells by Radiation-Induced Polymerization

Abstract
A radiation-induced polymerization method was applied to the immobilization of yeast [Saccharomyces formosensis] cells. The effects of irradiation, cooling and monomer, which are neccessary for polymerization, were recovered completely by subsequent aerobic incubation of yeast cells. Ethanol productivity in immobilized yeast cells increased with the increase of the aerobic incubation period. The growth of yeast cells in immobilized yeast cells was indicated. The maximum ethanol productivity in the immobilized yeast cell system was around 3 times as much as that in a free yeast cell system.