Enhanced polysaccharide recovery from agricultural residues and perennial grasses treated with alkaline hydrogen peroxide

Journal Article · Sat Jun 01 00:00:00 EDT 1985 · Biotechnol. Bioeng.; (United States)

DOI:https://doi.org/10.1002/bit.260270622· OSTI ID:6415494

Gould, J M

Pretreatment of lignocellulosic materials with alkaline hydrogen peroxide greatly increases their susceptibility to enzymatic cellulose hydrolysis. During the course of the pretreatment reaction (18 hours), the pH rises slowly, increasing from pH 11.5 to a final pH greater than 12. As a result, most of the hemicellulose in the lignocellulosic substrate becomes solubilized. Maintaining the reaction pH near the optimum of 11.5 prevents hemicellulose solubilization and decreases the time required for effective pretreatment to about 6 hours. Alkaline peroxide pretreatment is most effective on lignocellulose from monocotyledonous plants, especially members of the family Gramineae. Enzymatic saccharification efficiencies greater than 90% of theoretical were attained from high yielding perennial grasses such as big bluestem (Andropogon gerardi) and Indian grass (Sorghastrum nutans) after alkaline peroxide pretreatment. 13 references.

• Research Organization: Northern Regional Research Center, Peoria, IL
• OSTI ID: 6415494
• Journal Information: Biotechnol. Bioeng.; (United States), Vol. 27:6
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
CELLULOSE
ALKALINE HYDROLYSIS
HEMICELLULOSE
ENZYMATIC HYDROLYSIS
GRASS
HYDROGEN PEROXIDE
LIGNIN
OPTIMIZATION
PH VALUE
SACCHARIFICATION
CARBOHYDRATES
CHEMICAL REACTIONS
DECOMPOSITION
HYDROGEN COMPOUNDS
HYDROLYSIS
LYSIS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PEROXIDES
PLANTS
POLYSACCHARIDES
SACCHARIDES
SOLVOLYSIS
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