Enzymatic hydrolysis ofxylan, and isolation ofhydrolysis products. Cotton-seed cake, lOOOg of air-dried matter (containing 458g of total pentose analyzed by the orcinol-HCl method),1) was soaked in 600 ml of2% NaOH solution at room temperature for 4 days, to promote the enzymatic susceptibility of xylan in the cake. The alkali-treated cake (790g of air-dried matter containing 394g of total pent...

bacillus subtilis k40b was isolated from rice rhizospheres and its potential for production of xylanase was evaluated using biochemical methods. the gene for xylanase in b. subtilis k40b was amplified, sequenced and assigned to the ncbi genebank. the gene size was estimated to be 563 bp encoding 413 amino acids. comparison of the xylanase gene with reference sequences showed that the xylanase o...

background and objectives: research on xylanase has markedly increased due to its potential applications in pulping and bleaching processes using cellulose free preparations, textile processes, the enzymatic saccharification of lignocellulosic materials and waste treatment. the present study was aimed at isolation and characterization of xylan degrading strain of bacillus cereus from soil for p...

Enzymes are biological catalysts and very specific, catalyzing either a single chemical reaction or limited number of closely related reactions. For example, xylanases enzymes that catalyze the cleavage polymeric xylan thereby break down this hemicellulose. The first xylanase enzyme preparations used in bleaching process pulp also contained cellulase, which catalyzes hydrolysis cellulose. This ...

Xylanase is an enzyme that catalyzes the hydrolysis of 1,4-beta-D-xylosidic linkages in xylans that are constituents of hemicellulose, a structural component of plant cell walls. Arabinoxylans (also known as pentosans) are highly branched xylans that occur in wheat and rye flour. Several xylanases from fungal and bacterial sources are currently marketed for use in baking (Amfep; Pariza and John...

The current study aimed to isolate xylanase-producing marine actinobacteria, which is a novel idea; ascribed the challenges associated with culturing of microorganisms. A total 5 actinobacterial colonies were isolated from Kanyakumari sediments. Among them only one isolate, A1 indicated elevated xylanase activity manifesting zone hydrolysis around 20 mm during primary screening. On other hand, ...

exogenous enzymes such as xylanase can cause recovery of efficiency in poultry. in this study we investigated the effects of xylanase supplementation on small intestine histomorphometry in broilers chicken. two levels of xylanase supplementation (with or without 0.07% xylanase) was used in 4 treatment groups (two repetitions for each group and 15 chicks per group). after 42 days, 10 chicks from...