Review

Exopolysaccharide production by lactic acid bacteria: the manipulation of environmental stresses for industrial applications

  • Received: 02 September 2020 Accepted: 12 November 2020 Published: 17 November 2020
  • Exopolysaccharides (EPSs) are biological polymers secreted by microorganisms including Lactic acid bacteria (LAB) to cope with harsh environmental conditions. EPSs are one of the main components involved in the formation of extracellular biofilm matrix to protect microorganisms from adverse factors such as temperature, pH, antibiotics, host immune defenses, etc.. In this review, we discuss EPS biosynthesis; the role of EPSs in LAB stress tolerance; the impact of environmental stresses on EPS production and on the expression of genes involved in EPS synthesis. The evaluation results indicated that environmental stresses can alter EPS biosynthesis in LAB. For further studies, environmental stresses may be used to generate a new EPS type with high biological activity for industrial applications.

    Citation: Phu-Tho Nguyen, Tho-Thi Nguyen, Duc-Cuong Bui, Phuoc-Toan Hong, Quoc-Khanh Hoang, Huu-Thanh Nguyen. Exopolysaccharide production by lactic acid bacteria: the manipulation of environmental stresses for industrial applications[J]. AIMS Microbiology, 2020, 6(4): 451-469. doi: 10.3934/microbiol.2020027

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  • Exopolysaccharides (EPSs) are biological polymers secreted by microorganisms including Lactic acid bacteria (LAB) to cope with harsh environmental conditions. EPSs are one of the main components involved in the formation of extracellular biofilm matrix to protect microorganisms from adverse factors such as temperature, pH, antibiotics, host immune defenses, etc.. In this review, we discuss EPS biosynthesis; the role of EPSs in LAB stress tolerance; the impact of environmental stresses on EPS production and on the expression of genes involved in EPS synthesis. The evaluation results indicated that environmental stresses can alter EPS biosynthesis in LAB. For further studies, environmental stresses may be used to generate a new EPS type with high biological activity for industrial applications.


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    Acknowledgment



    Phu-Tho Nguyen is a graduate student researcher of Graduate University of Sciences and Technology, Vietnam Academy of Science and Technology, Vietnam. The authors would like to acknowledge the Science and Technology Program for the Southwestern Sustainable Development, Vietnam National University Ho Chi Minh City for the financial support. This publication's contents and interpretations are the sole responsibility of the authors.

    Conflicts of interest



    The authors declare no conflict of interest.

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