scholarly journals Dilute acid hydrolysis of wheat straw hemicellulose at moderate temperature: A simplified kinetic model

1986 ◽  
Vol 28 (2) ◽  
pp. 288-293 ◽  
Author(s):  
G. González ◽  
J. López-Santín ◽  
G. Caminal ◽  
C. Solà
Keyword(s):  
Kinetic Model ◽  
Acid Hydrolysis ◽  
Wheat Straw ◽  
Moderate Temperature ◽  
Dilute Acid ◽  
Dilute Acid Hydrolysis ◽  
Hydrolysis Of ◽  
Simplified Kinetic Model

Dilute Acid Hydrolysis of Wheat Straw Oligosaccharides

2008 ◽  
Vol 153 (1-3) ◽  
pp. 116-126 ◽  
Author(s):  
Luís C. Duarte ◽  
Talita Silva-Fernandes ◽  
Florbela Carvalheiro ◽  
Francisco M. Gírio
Keyword(s):  
Acid Hydrolysis ◽  
Wheat Straw ◽  
Dilute Acid ◽  
Dilute Acid Hydrolysis ◽  
Hydrolysis Of

Effect of Dilute-Acid-Hydrolysis Treatments on the Utilization of Wheat Straw by Rumen Bacteria and Free Enzymes

1992 ◽  
Vol 1992 ◽  
pp. 212-212
Author(s):  
F.B. de Castro ◽  
P.M. Hotten ◽  
E.R. Ørskov
Keyword(s):  
Cell Wall ◽  
Acid Hydrolysis ◽  
Wheat Straw ◽  
Effect Of Temperature ◽  
Rumen Bacteria ◽  
Dilute Acid ◽  
Cell Wall Polysaccharides ◽  
Dilute Acid Hydrolysis ◽  
Physical Treatment ◽  
Hydrolysis Of

Extensive hydrolysis of cell wall polysaccharides by rumen bacteria or free enzymes has been reported when lignocellulosic materials had been treated with steam and pressure (Dekker & Wallis, 1983; Castro & Machado, 1989). This has mainly been explained by complete hydrolysis of hemicellulose, lignin depolymerization and redistribution within the cell wall and increasing accessible pore volume by swelling of the cell walls. Physical treatment based on use of steam and pressure alone (auto-hydrolysis) is always associated with the release of toxic levels of furfural and phenolic monomers. These chemicals are able to inhibit the activity of rumen microorganisms, yeasts and free enzymes. To overcome this effect, dilute-acid-hydrolysis at low temperatures and pressures has been proposed (Grohmann et al., 1985). The aim of this study was to evaluate the effect of temperature, sulphuric acid concentration and reaction time on the utilization of treated wheat straw by dilute-acid-hydrolysis, either by rumen bacteria and free enzymes.

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