O205 エタノール生産のための木質バイオマスの前処理・酵素糖化技術の開発(セッション2:技術〜生物化学〜,口頭発表)

概要

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Pretreatment is essential technology in the ethanol production system from woody biomass with enzymatic saccharification, but it often uses chemicals such as sulfuric acids, which can cause several problems. As non-acid or non-chemical pretreatment, we are investigating mechanical comminution technology. Woody biomass pulverized with a planetary ball mill showed high saccharification rates for both cellulose and hemicellulose after enzymatic digestion. Ball milling was effective for both hardwoods and softwoods and enabled saccharification at low cellulose loading, which leads to large reduction of enzyme costs. Consecutive ethanol fermentation by the addition of yeast to the enzymatic hydrolysate was possible and the ethanol yields were more than 90% of the theoretical value for eucalyptus and Japanese cypress. The result suggested that little inhibition for fermentation occurred even though the residues of the saccharification remained in the same vessel. Ball milling is effective in reducing enzyme costs and considered to be a promising pretreatment procedure for ethanol production from woody biomass.
一般社団法人日本エネルギー学会の論文
2007-01-16