Yeast exopolysaccharides and their physiological functions

Mounting evidence indicated the capability of various microorganisms in biosynthesis of exopolysaccharides (EPSs). A wide range of evidence extensively investigated the ability of bacterial species for EPS synthesis and their favorable effects, so little is known regarding yeast species. Many factors like composition of growth media and fermentation conditions are related to the structural and physical properties of EPSs. The EPS protects the producer yeast strain against extreme environment. Researchers proposed that yeast EPSs have priority over bacterial EPSs because of high yields of EPS biosynthesis and easy separation methods from growth media. Besides, they have drawn increasing attention due to their interesting biological activities, food, pharmaceutical, and cosmetics applications. Although a limited number of studies exist, this review aims to highlight the EPS structure and various applications of known yeast species in detail.

Automated summary

Mounting evidence suggests the significant potential of various microorganisms, especially bacteria and yeast, in synthesizing exopolysaccharides (EPS). The biosynthesis of EPS is influenced by various factors and can protect yeast strains from harsh environments. Yeast EPS, with high yields and easy separation methods, show promising applications in food, pharmaceuticals, and cosmetics.