Chemical characteristics and enzymatic saccharification of lignocellulosic biomass treated using high-temperature saturated steam: Comparison of softwood and hardwood
Chemical characteristics and enzymatic saccharification of lignocellulosic biomass treated using high-temperature saturated steam: Comparison of softwood and hardwood
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DOI：
10.1016/j.biortech.2015.02.005
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发表时间：
2015-04-01
影响因子：
11.4
通讯作者：
Nakamura, Yoshitoshi
中科院分区：
文献类型：
--
作者：
Asada, Chikako;Sasaki, Chizuru;Nakamura, Yoshitoshi
研究了高温饱和蒸汽处理对软木和硬木化学特性及酶解糖化的影响。测定了雪松和山毛榉木片在25、35和45 atm条件下处理5 min后的失重和化学改性情况。傅里叶变换红外和x射线衍射分析表明，蒸汽处理对半纤维素和木质素有增溶和去除作用。对蒸汽处理过的木材进行碾磨处理，增强了其酶解糖化作用。采用蒸汽处理的山毛榉在35atm下发酵5min，再进行磨粉处理1min，获得最大酶解糖化（即纤维素糖化率为94%）。然而，对有效的酶催化糖化进行碾磨处理的必要性取决于木材的种类。(c) 2015 Elsevier Ltd.版权所有。
This study investigated the effect of high-temperature saturated steam treatments on the chemical characteristics and enzymatic saccharification of softwood and hardwood. The weight loss and chemical modification of cedar and beech wood pieces treated at 25, 35, and 45 atm for 5 min were determined. Fourier transform infrared and X-ray diffraction analyses indicated that solubilization and removal of hemicellulose and lignin occurred by the steam treatment. The milling treatment of steam-treated wood enhanced its enzymatic saccharification. Maximum enzymatic saccharification (i.e., 94% saccharification rate of cellulose) was obtained using steam-treated beech at 35 atm for 5 min followed by milling treatment for 1 min. However, the necessity of the milling treatment for efficient enzymatic saccharification is dependent on the wood species. (c) 2015 Elsevier Ltd. All rights reserved.