Abstract
Exopolysaccharides (EPS) are regular polymers released by microorganisms in the surrounding media that are climate friendly. Microbial extracellular polymeric substances (EPS) are a complex mixture of biopolymers that includes polysaccharides, proteins, nucleic acids, uronic acids, humic substances, lipids, and other biopolymers. Bacterial secretions, shedding of cell surface components, cell lysates, and adsorption of organic substances from the environment all contribute to the creation of EPS in a wide range of free-living bacteria, as well as microbial aggregates such as biofilms and bio granules. EPS may be loosely connected to the cell surface or bacteria may be contained in EPS, depending on its origin. There is compositional variability in EPS recovered from pure bacterial cultures and diverse microbial communities that are governed by organic and inorganic microenvironmental elements. Mostly lactic acid bacteria (LAB) are known to increase EPS production. Functionally, EPS aid in cell-to-cell aggregation, adhesion to a substratum, formation of flocs, protection from desiccation, and resistance to harmful exogenous materials because of the presence of the extraordinary primary organization, EPS shows different applications, for example, in food details, drug, makeup industry, and so on. As a result, comprehensive exopolysaccharide knowledge is required. This review provides an update about microbial exopolysaccharides, biosynthesis of exopolysaccharides, regulation of synthesis, and EPS production.