cellulase


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cellulase

 [sel´u-lās]
a concentrate of cellulose-splitting enzymes derived from Aspergillus niger and other sources; used as a digestive aid.

cel·lu·lase

(sel'yū-lās),
Enzyme catalyzing the hydrolysis of 1,4-β-glucoside links in cellulose, lichenin, and other β-d-glucans; found in a variety of microorganisms in soil and in the digestive tracts of herbivores. Used to produce digestive tablets and in the removal of cellulose from foods for special diets.

cellulase

(sĕl′yə-lās′, -lāz′)
n.
Any of several enzymes produced chiefly by fungi, bacteria, and protozoans that catalyze the hydrolysis of cellulose.

cel·lu·lase

(sel'yū-lās)
An enzyme catalyzing the hydrolysis of 1,4-β-glucoside links in cellulose. Used to produce digestive tablets and in the removal of cellulose from foods for special diets.

cellulase

an ENZYME capable of splitting CELLULOSE into glucose, used particularly in the softening or digestion of plant cell walls. Most animals are not capable of producing cellulase and therefore of digesting plant material themselves, relying instead on a variety of gut microorganisms to produce the enzyme and then absorbing the glucose product (see CAECUM). Cellulase is also produced in large quantities in the ABSCISSION layer formed in leaf stalks of higher plants, causing a weakening of cell walls prior to leaf fall.
References in periodicals archive ?
The soluble and insoluble production of cellulase was examined by activity assay and SDS-PAGE analysis (Laemmli, 1970).
The parameters used in the experimental design were pH (4-8, A), cassava pulp percentage (13%-20%, B), and cellulase enzyme-concentration (0.1%-1% w/v, C) with a Box-Behnken design for three factors that enabled the construction of a second-order polynomial model to be used with Design Expert software version 7.15 (Stat-Ease, Inc.).
The IVDMD and IVOMD of 0.01% cellulase treated silage at 6 and 48 h after incubation were greater (p<0.05) than those of 0.0025%.
Among the 38 bacterial isolates, 17 isolates showed a caseinase activity, 11 isolates showed amylase activity, 28 isolates showed esterase activity, 17 isolates showed cellulase activity and 12 isolates identified as L-asparaginase producers as shown in table 1.
To prepare a seed culture for ethanol fermentation, 1% (v/v) seed culture was inoculated in a medium containing enzymatic hydrolysis solution, in which 10% (w/v) pretreated soybean straw was hydrolyzed by the cellulase for 48 h as carbon sources, 2% Bacto peptone, and 1% Bacto yeast extract as nutrient sources.
Conversely, cultures with cellulose or sophorose promoted the expression of MFS permeases at similar expression levels, including crt1 (ID 3405), required for cellulase induction by cellulose and lactose, besides mediating the cellulose sensing process in T.
There were four kinds of enzymes in the experiment, named glucoamylase, cellulase, phytase and pectinase.
The data indicates that there was a large variation in cellulase activity in the different assays carried out; this variation increases the importance of the experimental design used in this study because it may contribute to achieving higher enzyme production by adjusting the variables involved in SSF.
Screening of fermentation medium for cellulase production
Supplementation of 2% OPFP treated with 20 U xylanase, 20 U cellulase, and 10 U cellulase/10 U xylanase increased the EPS production by strain SLC 13.

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