Effect of Varying Feedstock-Pretreatment Chemistry Combinations on the Formation and Accumulation of Potentially Inhibitory Degradation Products in Biomass Hydrolysates

被引:168
作者
Du, Bowen [2 ]
Sharma, Lekh N. [3 ]
Becker, Christopher [3 ]
Chen, Shou-Feng [3 ]
Mowery, Richard A. [1 ]
van Walsum, G. Peter [1 ]
Chambliss, C. Kevin [2 ,3 ]
机构
[1] Univ Maine, Dept Chem & Biol Engn, Forest Bioprod Res Inst, Orono, ME 04469 USA
[2] Baylor Univ, Dept Environm Sci, Waco, TX 76798 USA
[3] Baylor Univ, Dept Chem & Biochem, Waco, TX 76798 USA
关键词
lignocellulose; biomass hydrolysates; pretreatment; degradation products; inhibitors; LIQUID HOT-WATER; CORN STOVER; SACCHAROMYCES-CEREVISIAE; WHEAT-STRAW; LIME PRETREATMENT; WET-OXIDATION; ENZYMATIC-HYDROLYSIS; ETHANOL-PRODUCTION; FERMENTATION INHIBITORS; LIGNOCELLULOSIC BIOMASS;
D O I
10.1002/bit.22829
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
A variety of potentially inhibitory degradation products are produced during pretreatment of lignocellulosic biomass. Qualitative and quantitative interrogation of pretreatment hydrolysates is paramount to identifying potential correlations between pretreatment chemistries and microbial inhibition in downstream bioconversion processes. In the present study, corn stover, poplar, and pine feedstocks were pretreated under eight different chemical conditions, which are representative of leading pretreatment processes. Pretreatment processes included: 0.7% H2SO4, 0.07% H2SO4, liquid hot water, neutral buffer solution, aqueous ammonia, lime, lime with oxygen pressurization, and wet oxidation. Forty lignocellulosic degradation products resulting from pretreatment were analyzed using high performance liquid chromatography in combination with UV spectroscopy or tandem mass spectrometry detection (HPLC-PDA-MS/MS) and ion chromatography (IC). Of these compounds, several have been reported to be inhibitory, including furfural, hydroxymethyl furfural, ferulic acid, 3,4-dihydroxybenzaldehyde, syringic acid among others. Formation and accumulation of monitored compounds in hydrolysates is demonstrated to be a function of both the feedstock and pretreatment conditions utilized. Biotechnol. Bioeng. 2010; 107: 430-440. (C) 2010 Wiley Periodicals, Inc.
引用
收藏
页码:430 / 440
页数:11
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