Ethanol from lignocellulose hydrolysate

The unfavorable energy balance notwithstanding, the fermentation of ethanol, as well as other chemicals, from lignocellulose hydrolysate is considered highly desirable by some to avoid competition with food production. We note, however, that the large scale processing of waste lignocellulose runs counter to sensible... 

Ethanol from Lignocellulosic Materials Pretreatment, Acid and Enzymatic Hydrolyses, and Fermentation... 

Fujitomi K, Sanda T, Hasunuma T, Kondo A. (2012). Deletion of the PH013 gene in Sac-charomyces cerevisiae improves ethanol production from lignocellulosic hydrolysate in the presence of acetic and formic acids, and furfural. Bioresour Technol, 111, 161-166. 

Katahira S, Mizuike A, Eukuda H, Kondo A. (2006). Ethanol fermentation from lignocellulosic hydrolysate by a recombinant xylose- and cellooligosacchaiide-assimilating yeast strain. Appl Microbiol Biotechnol, 72, 1136-1143. 

Fig. 8 a, b. a PCA classification of lignocellulose hydrolysates from pine, spruce, aspen and birch using a combination of MOS, MOSFET and CP sensors, b Prediction of the ferment-ability of the same hydrolysates expressed as specific ethanol production rate using ANNs with topologies adapted to the sensor array (from [34] with permission of ACS)... 

As a result, a substantial fraction of the monosaccharides in lignocellulose hydrolysates from hardwood and agricultural residues consists of xylose. Consequently, ethanolic fermentation of xylose is of major concern for the efficient utilization of lignocellulosic hydrolysates to produce fuel ethanol. 

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