Journal ArticleDOI
Characterization of acid catalytic domains for cellulose hydrolysis and glucose degradation.
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TLDR
Results show that acid catalyzed hydrolysis is proportional to H+ concentration, and overall yields of glucose obtained from cellobiose and cellulose are higher for the best carboxylic acid tested, maleic acid, when compared to sulfuric acid at equivalent solution pH.Abstract:
Cellulolytic enzymes consist of a catalytic domain, a linking peptide, and a binding domain. The paper describes research on carboxylic acids that have potential as catalytic domains for constructing organic macromolecules for use in cellulose hydrolysis that mimic the action of enzymes. The tested domains consist of the series of mono-, di-, and tricarboxylic acids with a range of pK(a)'s. This paper systematically characterizes the acids with respect to hydrolysis of cellobiose, cellulose in biomass, and degradation of glucose and compares these kinetics data to dilute sulfuric acid. Results show that acid catalyzed hydrolysis is proportional to H+ concentration. The tested carboxylic acids did not catalyze the degradation of glucose while sulfuric acid catalyzed the degradation of glucose above that of water alone. Consequently, overall yields of glucose obtained from cellobiose and cellulose are higher for the best carboxylic acid tested, maleic acid, when compared to sulfuric acid at equivalent solution pH.read more
Citations
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References
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The generation of fermentation inhibitors during dilute acid hydrolysis of softwood
Simona Larsson,Eva Palmqvist,Bärbel Hahn-Hägerdal,Charlotte Tengborg,Kerstin Stenberg,Guido Zacchi,Nils-Olof Nilvebrant +6 more
TL;DR: In this paper, the influence of dilute sulfuric acid hydrolysis of spruce (softwood) on sugar yield and on the fermentability of the hydrolysate by Saccharomyces cerevisiae (Baker's yeast) was investigated.
Journal ArticleDOI
Mechanisms of enzymatic glycoside hydrolysis
TL;DR: The determination of a large number of three-dimensional structures of Glycosidases, both free and in complex with ligands, has provided valuable new insights into glycosidase catalysis, especially when coupled with results from studies of specifically labelled glyCosidases and kinetic analyses of point mutants.
Journal ArticleDOI
Kinetics of Wood Saccharification - Hydrolysis of Cellulose and Decomposition of Sugars in Dilute Acid at High Temperature
Journal ArticleDOI
The three-dimensional crystal structure of the catalytic core of cellobiohydrolase I from Trichoderma reesei.
Christina Divne,Jerry Ståhlberg,Tapani Reinikainen,Laura Ruohonen,Göran Pettersson,J. Knowles,TT Teeri,T.A. Jones +7 more
TL;DR: The structure of the major cellobiohydrolase, CBHI, of the potent cellulolytic fungus Trichoderma reesei has been determined and refined and may account for many of the previously poorly understood macroscopic properties of the enzyme and its interaction with solid cellulose.
Journal ArticleDOI
Three-Dimensional Structure of Cellobiohydrolase II from Trichoderma reesei
TL;DR: The three-dimensional structure of a cellulase, the enzymatic core of CBHII from the fungus Trichoderma reesei reveals an alpha-beta protein with a fold similar to but different from the widely occurring barrel topology first observed in triose phosphate isomerase.
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