The relationship between two aminopolysaccharide stereoisomers, namely α-(1→4)- and β-(1→4)-linked (N-acetyl)-D-glucosamine polymers, is of significant interest within the field of polysaccharide science, as they correspond to amino analogs of the representative abundant natural polysaccharides, viz. amylose and cellulose. While the latter glucosamine polymer is the basis of well-known natural ...

Chitosan is a partially deacetylated linear polysaccharide composed of ?-1,4-linked units d-glucosamine and N-acetyl glucosamine. As well as structural component fungal cell walls, chitosan potent antifungal agent. However, the mode action poorly understood. Here, we report that effective for control rice blast disease. application impairs growth fungus Magnaporthe oryzae has pronounced effect ...

Chitosan nanoparticles can be used in many types of applications such as food packaging, cosmetics and biomedical field. modified to form chitosan-based hydrogels for antiviral purpose. Chitosan-based are commonly wound healing, tissue engineering drug delivery. This study explains about the properties since there were not much paper or research agent. Usually, researchers did some studies appl...

Chitosan was prepared from crab shell. Different derivatives of chitosan e.g. phosphate, cyanoethyl and carboxymethyl chitosan are prepared. Molecular structure of chitosan and its derivatives was fallowed by infrared spectroscopy. A new band at 1715cm -1 (carboxyl group), at 2253cm -1 (cyano group) and at 1200cm -1 for (c-o-p) in spectra of carboxymethyl chitosan, cyanoethyl chitosan and chito...

Conventional studies on hydrogel properties such as viscosity, pH and swelling provide information without treating the components of hydrogel, viz., water and polymer individually. Water and hydrophilic polymers need to be studied individually to understand their relationship with each other to relate their influence on drug release. In this context, we have assigned the combination of porosit...

Представлены результаты исследования адсорбционных свойств сшитых эпихлоргидрином хитозановых сфер. В ходе была разработана методика получения и сшивки сфер, а также магнитно-разделяемых композитов на их основе. Адсорбционная способность сфер исследована примере водных растворов NiCl2 K2Cr2O7 при варьировании концентрации ионов Ni2+ Cr2О7 2- . Было показано, что адсорбционное равновесие в случа...