Xylanases (E.C.3.2.1.8) are key enzymes, which play an important role in the breakdown of xylan. Wheat bran and corn cob are a rich source of xylan (28%) and xylose (23%). Therefore these are attractive substrates for production of xylanase & ßxylosidase enzyme. Xylan, a major component of hemicelluloses, is a heterogeneous polysaccharides consisting of ß-1, 4 linked to D-xylosyl residues on th...

Abstract Microplastics (MP, plastic particles between 0.1 and 5000 ?m) contaminate agricultural soils through the application of organic fertilizers, sewage sludge, mulch. MP surfaces MP-soil interface provide specific habitats for soil microorganisms—the plastisphere. Microorganisms in plastisphere may benefit from utilizing as a carbon (C) source. Hydrolyzable with ester bonds are susceptible...

The main purpose of this study was to identify species of Parastagonospora in association with poaceous plants in Iran. Some species of Parastagonospora like P. nodorum causes a major loss to wheat production in the world. In the present research, two species including P. nodorum,and P. avenae were identified from different poaceous species. Parastagonospora nodorum was identifiedonPhalaris aru...

Thermomonospora fusca BD25 produces relatively high levels of activity of β-xylosidase and α-L-arabinofuranosidase. The aim of the work described in this study was to characterize some properties of β-xylosidase and α-L-arabinofuranosidase produced by T. fusca BD25 when growing on oat spelt xylan as the main carbon and energy sources. The substrates p-NPX and p-NPA reacted with β-xylosidase and...

Abstract This study evaluated the effects of inclusion raw, hydrobarothermally treated and fermented rapeseed cake (RRC, HRC FRC, respectively) in diets fed to laying hens. Hydrobarothermal treatment decreased hydroxyglucobrassicin neoglucobrassicin content (RC), whereas fermentation significantly reduced all glucosinolates (GLS) phytate phosphorus (PP) concentration. Both FRC increased serum c...

BACKGROUND β-Xylosidase is an important constituent of the hemicellulase system and it plays an important role in hydrolyzing xylooligosaccharides to xylose. Xylose, a useful monose, has been utilized in a wide range of applications such as food, light, chemical as well as energy industry. Therefore, the xylose-tolerant β-xylosidase with high specific activity for bioconversion of xylooligosacc...

Aspergillus ochraceus, a thermotolerant fungus isolated in Brazil from decomposing materials, produced an extracellular β-xylosidase that was purified using DEAE-cellulose ion exchange chromatography, Sephadex G-100 and Biogel P-60 gel filtration. β-xylosidase is a glycoprotein (39 % carbohydrate content) and has a molecular mass of 137 kDa by SDS-PAGE, with optimal temperature and pH at 70 °C ...

BACKGROUND Complete enzymatic hydrolysis of xylan to xylose requires the action of endoxylanase and β-xylosidase. β-xylosidases play an important part in hydrolyzing xylo-oligosaccharides to xylose. Thermostable β-xylosidases have been a focus of attention as industrially important enzymes due to their long shelf life and role in the relief of end-product inhibition of xylanases caused by xylo-...

The synthesis of the xylanolytic enzymes beta-xylanase and beta-xylosidase of Bacillus subtilis was studied. In contrast to many catabolic extracellular enzymes, beta-xylanase was synthesized constitutively during exponential growth and was not repressed by glucose. beta-Xylosidase synthesis was induced 100-fold by xylose and repressed 100-fold by glucose. Carbon catabolite repression was aboli...

beta-Xylosidase secreted by the shoyu koji mold, Aspergillus oryzae, is the key enzyme responsible for browning of soy sauce. To investigate the role of beta-xylosidase in the brown color formation, a major beta-xylosidase, XylA, and its encoding gene were characterized. beta-Xylosidase XylA was purified to homogeneity from culture filtrates of A. oryzae KBN616. The optimum pH and temperature o...