Journal
BIORESOURCE TECHNOLOGY
Volume 102, Issue 20, Pages 9788-9793Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.08.004
Keywords
Liquid hot water; Pretreatment; Biomass; White rot fungi; Soybean straw
Funding
- North Central Sun Grant Program [GRT00013735]
- U.S.Department of Agriculture [USDA CSREES 2008-38814-04729]
- Ohio Agricultural Research and Development Center
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Exhaustive hot water extraction (HWE) and liquid hot water (LHW) pretreatment were evaluated for their effects on degradation of biomass feedstocks (i.e., corn stover, wheat straw, and soybean straw) by Ceriporiopsis subvermispora. HWE (85 degrees C for 10 min) partially removed water soluble extractives and subsequently improved fungal degradation on wheat straw while it had little or no effect on the fungal degradation of corn stover and soybean straw. In contrast, LHW pretreatment at 170 degrees C for 3 min improved the fungal degradation of soybean straw; thus, lignin removal of 36.70% and glucose yield of 64.25% were obtained from the combined LHW and fungal pretreatment. However, corn stover, which was effectively degraded by fungal pretreatment alone, was less affected by this combined pretreatment. Our results indicated that a HWE or LHW pretreatment conducted under mild conditions worked synergistically with fungal degradation for some recalcitrant feedstocks. (C) 2011 Elsevier Ltd. All rights reserved.
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