Journal
ULTRASONICS SONOCHEMISTRY
Volume 29, Issue -, Pages 455-460Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ultsonch.2015.10.017
Keywords
Cellulose; Enzymatic saccharification; Lignocellulose; Pretreatment; Ultrasound
Categories
Funding
- Japan Society for the Promotion of Science KAKENHI [25820396]
- JST A-STEP program [241FT0189]
- Grants-in-Aid for Scientific Research [25820396, 15K18273] Funding Source: KAKEN
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Ultrasound (US) can be used to disrupt microcrystalline cellulose to give nanofibers via ultrasonic cavitation. Sodium percarbonate (SP), consisting of sodium carbonate and hydrogen peroxide, generates highly reactive radicals, which cause oxidative delignification. Here, we describe a novel pretreatment technique using a combination of US and SP (US-SP) for the efficient saccharification of cellulose and hemicellulose in lignocellulosic corn stover. Although US-SP pretreatment was conducted under mild condition (i.e., at room temperature and atmospheric pressure), the pretreatment greatly increased lignin removal and cellulose digestibility. We also determined the optimum US-SP treatment conditions, such as ultrasonic power output, pretreatment time, pretreatment temperature, and SP concentration for an efficient cellulose saccharification. Moreover, xylose could be effectively recovered from US-SP pre-treated biomass without the formation of microbial inhibitor furfural. (C) 2015 Elsevier B.V. All rights reserved.
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