Xylanase treatment can be an environmentally friendly way to improve the formability and drainability of chemi-mechanical pulp (CMP). Improvements in xylanase treatment efficiency are possible with application of an ultrasonic wave via the cavitation effect. Results showed that the specific surface area (SSA) of the combined treated pulp increased by 14.6% at an ultrasonic treatment of 30 min a...

This study focuses on screening and identification of bacteria, which can produce alkaline xylanase at alkaline pH and high temperature. Bacterial isolates from corncob decaying soil, capable of hydrolyzing xylan were screened. Selected and purified 108 bacterial colonies grown on xylannutrient agar slants were activated and transferred into the fermentation medium. Six highest xylanase produci...

This study focused on the optimization of xylitol production from sugarcane bagasse by using response surface methodology. Xylitol was produced through a series processes, firstly, ultrasound-assisted mild alkaline pretreatment for xylan extraction followed enzymatic hydrolysis to xylose enzyme β-1,4-xylanase and finally microbial fermentation yeast (Candida guilliermondii), bacteria (Corynebac...

Three experiments were conducted to study the property of xylanase and the effects of xylanase in wheat-based diets on growth performance of broilers, respectively. Experiment 1 was performed in vitro to evaluate the effect of different pH and temperature on xylanase activity, and to evaluate the enzymic stability under different conditions. The results indicated that the optimum temperature an...

In this study, the immobilization of xylanase using a protein-inorganic hybrid nanoflower system, was assessed to improve the enzyme properties. The synthesis of hybrid xylanase nanoflowers was very effective at 4°C for 72 h, using 0.25 mg/mL protein, and efficient immobilization of xylanase was observed with a maximum encapsulation yield and relative activity of 78.5% and 148%, respectively. I...

Providencia sp. strain X1 showing the highest xylanase activity among six bacterial isolates was isolated from saw-dust decomposing site. Strain X1 produced cellulase-free extracellular xylanase, which was higher in wheat bran medium than in xylan medium, when cultivated at pH 8.0 and 35°C. Zymogram analysis of crude preparation of enzymes obtained while growing on wheat bran and birchwood xyla...

BACKGROUND The search for novel thermostable xylanases for industrial use has intensified in recent years, and thermophilic fungi are a promising source of useful enzymes. The present work reports the heterologous expression and biochemical characterization of a novel thermostable xylanase (GH10) from the thermophilic fungus Malbranchea pulchella, the influence of glycosylation on its stability...

BACKGROUND Cellulases and xylanases are the key enzymes involved in the conversion of lignocelluloses into fermentable sugars. Western Ghat region (India) has been recognized as an active hot spot for the isolation of new microorganisms. The aim of this work was to isolate new microorganisms producing cellulases and xylanases to be applied in brewer's spent grain saccharification. RESULTS 93 ...

The xylanase production by Cochliobolus sativus strain Cs6 was improved under solid state fermentation (SSF). High xylanase activity (1079 U/g) was obtained when wheat straw was used after 8 days of incubation. Combinations of sodium nitrate with peptone or yeast extract resulted in an increased xylanase production (1543 and 1483 U/g, respectively). The Cs6 strain grown in SSF in a simple mediu...

Research background. The development of a novel process for the production xylooligosaccharides based on 4R concept is made possible by integration numerous techniques, especially enzymatic modification, together with physical pretreatment renewable materials. This study aims to integrate use agricultural wastes xylanase new strain Penicillium sp. and value-added products, xylooligosaccharides....