Recent Trends in the Characterization of Microbial Exopolysaccharides

Abstract

Bacterial polysaccharides that are secreted into the environment are termed as exopolysaccharides (EPSs). Depending on the monosaccharide composition, EPSs can be classified into homo (HoPSs) and heteropolysaccharides (HePSs). HoPSs consist of only one type of monosaccharide, mostly glucose or fructose. In the recent years, EPSs have drawn increasing attention of the researchers worldwide, not only for their thickening, texturizing and viscosifying properties, but also for their health promoting applications. These EPSs constitute an alternative class of biothickeners, which have also been proved to have good emulsifying property, apart from their texture promoting ability in various foods. The biochemical properties of the EPSs depend on the primary structure of the EPSs. Hence it is very important to know the monomeric composition of the EPSs and their gycosidic bonds. HPLC, GC, GC-MS, NMR, Capillary electrophoresis and various bioinformatics tools can be used to determine the chemical characteristics of the EPSs.

Articulating the exuberant intricacies of bacterial exopolysaccharides to purge environmental pollutants

“…In acid hydrolysis of exopolysaccharide, the critical factors are acid concentration, temperature, and time duration. A high concentration of acid promotes monosaccharide degradation, and low temperature leads to incomplete polymer hydrolysis [ 41 ]. Conversion of less volatile sugar monomer to the volatile and stable derivative is an essential step in Gas Chromatography (GC) analysis.…”

Liquid Chromatography Analysis of Common Nutritional Components, in Feed and Food

“…Bai and coworkers analyzed mono- and oligosaccharides from Hakka rice [319] as a measure of quality for sugars such as isomaltotriose, isomaltose, panose, maltose, and glucose. Finally, the determination of bacterial exopolysaccharides has also been reported [320,331].…”

Влияние способа подачи газов в камеру на процессы реактивного магнетронного распыления Ti-Al составной мишени

“…Одной из актуальных проблем современной микроэлектроники является внедрение в технологические процессы новых материалов со специальными свойствами [1][2][3][4][5][6]. К группе таких материалов относятся сложные многокомпонентные оксиды, которые в зависимости от состава и структуры обладают уникальными свойствами.…”

“…Улучшение функциональных свойств пленок сложных оксидов сейчас в основном происходит за счет расширения их спектра и усложнения состава [2]. Однако практика показывает, что свойства таких материалов крайне чувствительны к элементному составу и структурному устройству.…”