期刊
BIORESOURCE TECHNOLOGY
卷 320, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.124306
关键词
Corn stover; Peracetic acid; Maleic acid; Fractionation; Delignification
资金
- National Natural Science Foundation of China [31671572]
- Innovation Team Project of the Education Ministry [IRT_17R105]
- National Key R&D Program of China [2016YFE0112800]
The study introduces a one-step lignocellulose fractionation method using peracetic acid and maleic acid, which efficiently extracts cellulose from corn stover and achieves a high glucose yield after enzymatic hydrolysis.
Lignocellulose fractionation is a primary treatment to enhance cellulose accessibility and multi-component use. Herein, the development of a one-step fractionation is reported for cellulose enrichment from corn stover using a low concentration of peracetic acid combined with maleic acid (PAM). The effects of pretreatment parameters on the contents of cellulose, hemicellulose, and lignin were investigated. After cooking for 1 h at 130 degrees C with 1.5 wt % peracetic acid and 3 wt% maleic acid, 86.83% of corn stover cellulose remained in the solid residue while 88.21% of hemicellulose and 87.77% of lignin dissolved into the aqueous liquid. Hemicellulose was primarily hydrolyzed into xylose with 84.58% recovered during the PAM process. The cellulose-rich residue was enzymatically hydrolyzed with a glucose yield of 89.65%, which was two to three times that of untreated substrate. Generally, the proposed process offers a promising approach for efficient fractionation of lignocellulose under mild and environmental-friendly conditions.
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