Cellulase


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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.

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.

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.
We have previously produced recombinant thermostable phytase and now we have characterized the cellulase.
After that cellulose as fiber was converted to fermentable sugar by cellulase. RSM was employed to evaluate the effect of pH, enzyme, and cassava pulp concentration on ethanol production using mixed culture.
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%.
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.
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.
Taken together, these results showed that, although the cellulase gene expression profile is similar during T.
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.).
The growing interest in cellulase production has been focused in improving the process economics of various biotechnological industries [7].

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