3-12-3 半流通型加圧熱水処理による木材の化学変換における酢酸添加の効果(3-12 水熱・超臨界,Session 3 バイオマス等,研究発表)

概要

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Effect of acetic acid addition on chemical conversion of Japanese beech (Fagus crenata) as one of the hardwoods and Japanese cedar (Cryptomeria japonica) as one of the softwoods was investigated as treated by semi-flow hot-compressed water with acetic acid aqueous solution. Compared with the treatment without acetic acid, acid addition did not help improve the hemicellulose hydrolysis, but slightly enhance the cellulose hydrolysis and lignin decomposition in Japanese beech. On the other hand, for Japanese cedar, the acid addition interestingly clarified a significant effect on improving the hemicellulose and cellulose hydrolysis, as well as, the lignin decomposition. The differences observed between these two woods clearly proved that, due to the lesser amount of acetyl group in softwood hemicellulose compared to hardwoods, additional acetic acid, as a result, played an important role in enhancing those hydrolysis and decomposition of cell wall components in Japanese cedar.
2010-08-02