P221 過酸化水素-触媒系による木粉のセルロース化(ポスター発表)

抄録

For the production of bioethanol and lactic acid from glucose for alternative petroleum fuel and biodegradative plastic the fermentation process is an important technique. To obtain glucose one of three major cell wall components, cellulose, is an inviting material. Cellulase is not able to converted wood including lignin into glucose easily. So some pretreatments for degradation of lignin are required before the enzymatic saccharification process. Here we apply a hydrogen peroxide-catalyst system to wood powder for delignification. This catalyst system is one of pulp-bleaching methods. Lignin in cell wall of Japanese cedar was decomposed by hydrogen peroxide, itself, but adding the catalyst improved a degradation of lignin drastically. This delignification method was very effective in case the concentration of hydrogen peroxide was more than 15%. Higher treatment temperature and longer treatment time increased in the degree of delignification. Lignin of hardwood powder was easily decomposed by the hydrogen peroxide-catalyst system.