Paper Title:
Impact of Hemicellulose on Cellulose Simultaneous Saccharification and Fermentation
  Abstract

Hemicellulose is generally considered a negative factor for enzymatic cellulose hydrolysis, but it was proved to be a positive one for the enzymatic action of delignified pulp in this study. Alkaline wheat straw pulp (AWSP) with different hemicellulose proportion was obtained by treating AWSP with 1 M H2SO4 at 100°C for different time. The soluble fractions of the hydrolyzed mixtures neutralized with Ca (OH)2 together with the insoluble fractions were used for simultaneous saccharification and fermentation (SSF). The ethanol yields reduced while the hemicellulose content of AWSP decreased. The crystallinity increasing after hemicelluloses removal suggested that amorphous hemicellulose interweaving with cellulose prevented cellulose fibers to aggregate compactly and improved the access of cellulases to cellulose. However, the yeast unfermented reducing sugar derived from hemicellulose was inhibitory to SSF.

  Info
Periodical
Chapter
Chapter 2: Future Materials Technology and Biomedicine
Edited by
Barry Tan
Pages
403-408
DOI
10.4028/www.scientific.net/AMR.365.403
Citation
X. H. Zhou, H. Chen, Z. Li, "Impact of Hemicellulose on Cellulose Simultaneous Saccharification and Fermentation", Advanced Materials Research, Vol. 365, pp. 403-408, 2012
Online since
October 2011
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Price
$32.00
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