Volume 2 Issue 4
Nov.  2017
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Jun Xu, Guoqiang Zhou, Jun Li, Li-huan Mo. Effects of steam explosion pretreatment on the chemical composition and fiber characteristics of cornstalks[J]. Journal of Bioresources and Bioproducts, 2017, 2(4): 153-157. doi: 10.21967/jbb.v2i4.100
Citation: Jun Xu, Guoqiang Zhou, Jun Li, Li-huan Mo. Effects of steam explosion pretreatment on the chemical composition and fiber characteristics of cornstalks[J]. Journal of Bioresources and Bioproducts, 2017, 2(4): 153-157. doi: 10.21967/jbb.v2i4.100

Effects of steam explosion pretreatment on the chemical composition and fiber characteristics of cornstalks

doi: 10.21967/jbb.v2i4.100
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The authors are grateful for the financial support from the Special Support Plan for High-Level Talent Cultivation of Guangdong Province (No. 2014TQ01N603), Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education of China (No.KF201508) and Guangdong province science & technology plan projects (No.2015B020241001).

  • This paper investigated the influence of steam explosion pretreatment with or without acid as the catalyst on the chemical composition and sugar contents of corn stalks. The fiber characteristics of the pretreated corn stalks were analyzed with a scanning electron microscope, a FS-300 automatic fiber analyzer and a fully automatic surface and pore analyzer. The results showed that the steam explosion pretreatment did not change the cellulose content of the corn stalks. However, hemicellulose was degraded and a portion of lignin was solubilized in the steam explosion pretreatment process. When acid was added in the steam explosion process, the fiber surface and cell wall structure of corn stalks were damaged, the specific surface area and pore size increased, and fiber length decreased, all of which were beneficial to subsequent enzymatic hydrolysis with cellulase. However, content of polysaccharides decreased after acid steam explosion pretreatment.

     

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