Utilization of waste cellulose. VI. Pretreatment of lignocellulosic materials with sodium hypochlorite and enzymatic hydrolysis by Trichoderma viride

Journal Article · Tue Oct 01 04:00:00 EDT 1985 · Appl. Biochem. Biotechnol.; (United States)

DOI:https://doi.org/10.1007/BF02798669· OSTI ID:5296264

David, C; Fornasier, R; Thiry, P

A pretreatment of lignocellulosic materials with sodium hypochlorite-hypochlorous acid at controlled pH (between 7 and 9) considerably increases the accessibility of the cellulosic part of the substrate to chemical and biochemical reactants. As a consequence, the yield and rate of the enzymatic hydrolysis to glucose is largely increased. Wheat straw and spruce sawdust have been investigated. The increase in accessibility is assigned to degradation and (or) detachment of the lignin network. The loss in cellulose and hemicellulose is not important, lignin being preferentially degraded under carefully controlled pH conditions. When applied to pure cellulose, the pretreatment decreases the yield of enzymatic hydrolysis; in the absence of lignin, oxidation of the anhydroglucose units is important and results in the inhibition of the enzymatic hydrolysis. 12 references.

• Research Organization: Univ. Libre de Bruxelles, Belgium
• OSTI ID: 5296264
• Journal Information: Appl. Biochem. Biotechnol.; (United States), Journal Name: Appl. Biochem. Biotechnol.; (United States) Vol. 11:5; ISSN ABIBD
• Country of Publication: United States
• Language: English

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ACID HYDROLYSIS
ALDEHYDES
CARBOHYDRATES
CELLULOSE
CHEMICAL REACTIONS
DECOMPOSITION
ENZYMATIC HYDROLYSIS
FUNGI
GLUCOSE
HEXOSES
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
HYDROLYSIS
INHIBITION
INORGANIC ACIDS
KINETICS
LIGNIN
LYSIS
MONOSACCHARIDES
ORGANIC COMPOUNDS
PH VALUE
PLANTS
POLYSACCHARIDES
REACTION KINETICS
SACCHARIDES
SOLID WASTES
SOLVOLYSIS
SPRUCES
STRAW
SUBSTRATES
TREES
TRICHODERMA
TRICHODERMA VIRIDE
WASTES
WOOD WASTES