期刊
BIORESOURCE TECHNOLOGY
卷 101, 期 21, 页码 8429-8438出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.06.027
关键词
AFEX; Ammonolysis; Degradation products; Lignocellulosic corn stover; Dilute-acid pretreatment
资金
- DOE Great Lakes Bioenergy Research Center
- U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research [DE-FC02-07ER64494]
- Michigan State Research Foundation
- NREL
- NSF [DBI-0619489]
- U.S. Department of Agriculture, National Institute of Food and Agriculture
- National Research Initiative [2005-35504-16335, 2008-35504-04612]
Decomposition products formed/released during ammonia fiber expansion (AFEX) and dilute acid (DA) pretreatment of corn stover (CS) were quantified using robust mass spectrometry based analytical platforms. Ammonolytic cleavage of cell wall ester linkages during AFEX resulted in the formation of acetamide (25 mg/g AFEX CS) and various phenolic amides (15 mg/g AFEX CS) that are effective nutrients for downstream fermentation. After ammonolysis, Maillard reactions with carbonyl-containing intermediates represent the second largest sink for ammonia during AFEX. On the other hand, several carboxylic acids were formed (e.g. 35 mg acetic acid/g DA CS) during DA pretreatment. Formation of furans was 36-fold lower for AFEX compared to DA treatment; while carboxylic acids (e.g. lactic and succinic acids) yield was 100-1000-fold lower during AFEX compared to previous reports using sodium hydroxide as pretreatment reagent. (C) 2010 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据