cellulase

[′sel·yə‚lās]

(biochemistry)

Any of a group of extracellular enzymes, produced by various fungi, bacteria, insects, and other lower animals, that hydrolyze cellulose.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Cellulase

an enzyme of the hydrolase class. Cellulase depolymerizes cellulose polysaccharides (including cellulose itself) and forms glucose or the disaccharide cellobiose. Cellulase is found in germinated grain and in many bacteria and fungi; it is especially active in house fungi that grow on wood. Cellulase is also found in certain animals that feed on wood; these animals include shipworms and Cossidae. Ruminants are able to digest cellulose because symbiotic microorganisms that release cellulase live in the compartments of their stomachs, especially in the rumen.

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References in periodicals archive

The present study demonstrates the production and characterization of recombinant thermostable cellulase from this hyperthermophile and the utilization of this cellulase for paper de-inking process.

Cloning, Expression and Characterization of Highly Active Recombinant Thermostable Cellulase from Thermotoga naphthophila

We have previously produced recombinant thermostable phytase and now we have characterized the cellulase.

A step for fulfilment of industrial requirement

Both fresh or wilted forages were then treated as follows: control (untreated), Acremonium cellulase (AC, Meiji Seika Pharma Co., Ltd, Tokyo, Japan): AC 0.0025%, AC 0.005%, AC 0.01%, Trichoderma cellulase (TC, Meiji Seika Pharma Co., Ltd, Japan): TC 0.0025%, TC 0.005%, and TC 0.01%.

Comparative analysis of silage fermentation and in vitro digestibility of tropical grass prepared with Acremonium and Tricoderma species producing cellulases

Kudanga & Mewenje (2005) found a higher growth in some filamentous fungi on CMC medium due to the ability of CMC to act as an indirect inducer of cellulase production.

Capacidad celulolitica de una cepa prometedora de Irpex lacteus (Basidiomycota: Polyporales) de la selva subtropical de la provincia de Misiones, Argentina

Enzymatic hydrolysis of the alkali-pretreated straw (2 M NOH-treated biomass) was carried out in a tube with a 30 ml reaction volume using Cellic CTec2 cellulase. 10% (w/v) pretreated biomass was soaked in phosphate buffer (pH 6.0) containing the cellulase with 10~50 FPU (filter paper unit) per gram of dry biomass.

Evaluation of Alkali-Pretreated Soybean Straw for Lignocellulosic Bioethanol Production

Taken together, these results showed that, although the cellulase gene expression profile is similar during T.

New Genomic Approaches to Enhance Biomass Degradation by the Industrial Fungus Trichoderma reesei

Enzymes included cellulase (15000 U/g; Fine Chemical Research Institute, Tianjin City, China), saccharifying enzyme (100000 U/g; Beijing Aoboxing Biotechnology, LLC), phytase (5000 U/g), and pectinase (10000 U/g; Shandong Sukahan Bio-technology Co., Ltd.).

Optimization of Ethanol Production from Garcinia Cambogia Residues and the Effects of its Medicinal Component on Production Yield

The results indicate that Trichoderma viride produces three cellulase enzymes i.e.

PRELIMINARY ISOLATION AND CHARACTERIZATION OF CELLULASES OF TRICHODERMA VIRIDE GROWN ON BANANA STEM WASTE AND BAGGASSE AS SUBSTRATES

Singhania, Sukumaran, and Pandey (2007) obtained total cellulase activity of 0.17 U [g.sup.-1] after 5 days of culture, using T.

Production of cellulases by Penicillium oxalicum through solid state fermentation using agroindustrial substrates/Producao de celulases por Penicillium oxalicum em fermentacao em estado solido usando diferentes substratos agroindustriais

The growing interest in cellulase production has been focused in improving the process economics of various biotechnological industries [7].

Cellulase Production by Trichosporon laibachii