Aspergillus sydowii MG49 produces a 30-kDa exosplitting xylobiohydrolase during growth on xylan. A specific chemical modification and substrate protection analysis of purified xylanase provided evidence that tryptophan and carboxy and amino groups are present at the catalytic site of this enzyme. Thermal inactivation of the xylanase occurs because of irreversible polymolecular aggregation, whic...

Glycerol has become an attractive carbon source in the biotechnology industry owing to its low price and reduced state. However, glycerol is rarely used as a carbon source in Saccharomyces cerevisiae because of its low utilization rate. In this study, we used glycerol as a main carbon source in S. cerevisiae to produce 1,2-propanediol. Metabolically engineered S. cerevisiae strains with overexp...

The growing demand for Spirulina ( Arthrospira platensis ) as a dietary supplement suggests that rapid and reliable method to determine its saccharides polyols content would be of great interest. Additionally, the impact these microalga conditions may have on such really useful producers. This manuscript presents development validation new analytical microwave-assisted extraction (MAE) first st...

food packaging extensively uses plastic films and containers of petroleum-based polymers for their excellent functional properties and competitive price. plastic packaging has become a central focus of waste reduction efforts, particularly in aesthetic terms of damage to flora and fauna. presently, consumers require greater quality and longer shelf lives for their foodstuffs, while they demand ...

Bioethanol production is in high demand due to its potential replace transportation fuel and ability be renewable long-lasting. Therefore, the bioconversion of fermentable sugars ethanol central importance. The work aimed explore yeast properties changes during fermentation at different pHs temperature conditions. Biomass production, specific growth rate (SGR), products, metabolite composition ...

The effect of dry material, glycerol and ratio of water to seed in alyssum homalocarpum films on their thickness, transparency, moisture content, tensile strength, elongation and water vapor permeability was investigated using mixture response surface methods. Dry material and glycerol were important factors influencing tensile strength, elongation and water vapor permeability. Ratio of water t...

The effect of dry material, glycerol and ratio of water to seed in Alyssum homalocarpum films on their thickness, transparency, moisture content, tensile strength, elongation and water vapor permeability was investigated using mixture response surface methods. Dry material and glycerol were important factors influencing tensile strength, elongation and water vapor permeability. Ratio o...

Raw glycerol fraction (also called bioglycerol) is the second product of fatty acids triglycerides alcoholysis. However, by many biodiesel producers it is treated as a waste, unwanted material. Due to overproduction of the glycerol fraction there have been many attempts to find its proper utilization, especially that it can comprise up to 30% of the whole biodiesel production. Finding proper ap...

Confocal Raman microspectroscopy (CRM) with 633- and 785-nm excitation wavelengths combined optical clearing (OC) technique was used for ex-vivo study of porcine skin in the fingerprint region. The has been performed on samples by applying a mixture glycerol distilled water glycerol, chemical penetration enhancer dimethyl sulfoxide (DMSO) during 30[Formula: see text]min 60[Formula: treatment. I...