Ethanol production with β-xylosidase, xylose isomerase, and Saccharomyces cerevisiae from the hydrolysate of Japanese beech after hot-compressed water treatment

Abstract

Ethanol was produced from the hydrolysate collected as the water-soluble (WS) portion after hot-compressed water (HCW) treatment of Japanese beech. The process involved saccharification with β-xylosidase followed by isomerization with xylose isomerase and fermentation with Saccharomyces cerevisiae. Several process schemes were compared to investigate the effect of process integration of saccharification, isomerization and fermentation. Higher ethanol yields were obtained for the processes that integrated isome…