Paracoccidioides brasiliensis is a dimorphic fungus pathogenic to humans, growing as yeast during infection and as mycelium in the environment. The cell wall of P. brasiliensis consists of chitin and glucan and is involved in pathogenesis (de Agostino Biella et al. 2006). The percentage of chitin in P. brasiliensis ranges from 37-48% in the yeast phase and from 7-18% in the mycelial phase, indi...

Abstract Research in healthcare involves the use of natural resources manufacture pharmaceutical products. Chito-oligosaccharides (CHOS) are described as homo- or heterooligomers N-acetylglucosamine and D-glucosamine. As a starting material for CHOS production chitin chitosan can be used. When it comes to medical field, there indications that may developed used drugs against asthma, antibacteri...

The aim of this work was to study a two-step chemoenzymatic method for production short chain chitooligosaccharides. Chitin chemically pretreated using sulphuric acid, sodium hydroxide and two different ionic liquids, 1-Ethyl-3-methylimidazolium bromide Trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl)phosphinate under mild processing conditions. Pretreated chitin further hydrolyzed empl...

The fast and sensitive detection of copper ions would be essential for water monitoring. Herein, we report a novel development an impedimetric sensor based on carbon dots/chitosan nanocomposite. Carbon dots (CDs) were synthesized by simple heating acidic aqueous solution glucose. prepared CDs characterized TEM, FTIR, XRD, UV-visible, PL. These measurements revealed that the possess mean size 3....

In this study, the effects of different temperatures, incubation times and types reducing sugars, including glucose low molecular weight (Mw) chito-oligosaccharides (COS) with varying acetylation degree (AD), on extent Maillard reaction (MR) chitosan-based films were studied. Interestingly, an improvement structural functional properties all MR-crosslinked was noted, which is more pronounced by...