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Evaluation of the Enzymatic Saccharification Efficiency of an Energy Crop, <i>Erianthus arundinaceus</i>, Pretreated with Ca(OH)<sub>2</sub> Using both Countercurrent Washing System and pH Adjustment by Nonpressurized CO<sub>2</sub>
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- Yamagishi Kenji
- Bioresource Conversion Unit, Food Research Institute, National Agriculture and Food Research Organization
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- Ike Masakazu
- Bioresource Conversion Unit, Food Research Institute, National Agriculture and Food Research Organization
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- Gau Mitsuru
- Japan Agriculture Design Institute
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- Tokuyasu Ken
- Bioresource Conversion Unit, Food Research Institute, National Agriculture and Food Research Organization
Bibliographic Information
- Other Title
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- Evaluation of the Enzymatic Saccharification Efficiency of an Energy Crop, Erianthus arundinaceus, Pretreated with Ca(OH)₂ Using both Countercurrent Washing System and pH Adjustment by Nonpressurized CO₂
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Description
<p>Erianthus arundinaceus (ER) is greatly appreciated among domestic energy crops in Japan for the production of fermentable sugars from lignocellulosic polysaccharides. In this study, we developed an efficient Ca(OH)2-based pretreatment of both stems and leaves of ER at ambient temperature with the addition of a washing step for enzymatic saccharification. The recoveries of glucans and xylans in the pretreated ER after four countercurrent washing cycles were 91 and 76 %, respectively, the former being considerably higher than that of rice straw (RS) (72 %). Their saccharification ratios in the washed sample under the pressure of 1 atm CO2 were 80 and 92.5 %, respectively. The application of this simple sugar production process from ER would further support the domestic bioprocess development. ER is also foreseen to provide the additional feedstock favorable for harvesting from winter to spring in Japan, preventing a risk for feedstock shortage generated by single harvesting such as RS.</p>
Journal
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- Journal of Applied Glycoscience
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Journal of Applied Glycoscience 68 (3), 63-67, 2021-08-20
The Japanese Society of Applied Glycoscience