Journal
JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY
Volume 36, Issue 3, Pages 192-204Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/02773813.2015.1112403
Keywords
Degradation profiles; non-lignin constituents; biomass-based chemicals; dilute sulfuric acid pretreatment; corn stover
Categories
Funding
- National Natural Science Funding of China [31370573]
- Key Research and Development Program of Jiangsu [BE2015758]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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Corn stover was separated into four derived streams: ethanol extractives (EE), hot water extractives (HWE), extracted cellulose, and extracted hemicelluloses. They were separately treated with 0.75% dilute sulfuric acid at 180 degrees C for 40 minutes. Over 100 degradation products were separated and identified using gas chromatography-mass spectrometry (GC-MS) and liquid chromatography (LC). These products contained compounds from several chemical classes, including sugars, aromatics, carboxylic acids, furans, alcohols, aldehydes, and cyclenes. Itaconic acid, succinic acid, fumaric acid, azelaic acid, DL-isoborneol, and 3-methyl-2-furoic acid were detected in the dilute sulfuric acid pretreated corn stover for the first time. Potential microbial fermentation inhibitors and valuable chemical building blocks were evaluated. In an effort to identify and develop inhibitors which are useful for controlling and improving the lignocellulosic biorefinery process, how they originated from the corn stover constituents was examined.
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