Biosynthesis, Purification and Biotechnological Use of Exopolysaccharides Produced by Lactic Acid Bacteria

Werning, María Laura; Notararigo, Sara; Nacher, Montserrat; Palencia, Pilar Fernández de; Aznar, Rosa; López, Paloma

doi:10.5772/32412

Food Additive 2012

DOI: 10.5772/32412

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Biosynthesis, Purification and Biotechnological Use of Exopolysaccharides Produced by Lactic Acid Bacteria

María Laura Werning¹,

Sara Notararigo²,

Montserrat Nacher³

et al.

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Cited by 4 publications

(1 citation statement)

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“…UDP)-glucose pyrophosphorylase catalyzes conversion of glucose-1-phoshphate to UDP-glucose (key molecule in EPS synthesis)[58]. Direct precursors for bacterial EPS biosynthesis are formed intracellularly from intermediates of the central carbon metabolism.…”

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confidence: 99%

Exopolysaccharides from probiotic bacteria and their health potential

Angelin

Kavitha

2020

International Journal of Biological Macromolecules

360

225

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Exopolysaccharides (EPS) are extracellular macromolecules excreted as tightly bound capsule or loosely attached slime layer in microorganisms. They play most prominent role against desiccation, phagocytosis, cell recognition, phage attack, antibiotics or toxic compounds and osmotic stress. In the last few decades, natural polymers have gained much attention among scientific communities owing to their therapeutic potential. In particular the EPS retrieved from probiotic bacteria with varied carbohydrate compositions possess a plenty of beneficial properties. Different probiotic microbes have unique behavior in expressing their capability to display significant health promoting characteristics in the form of polysaccharides. In this new era of alternative medicines, these polysaccharides are considered as substitutes for synthetic drugs. The EPS finds applications in various fields like textiles, cosmetics, bioremediation, food and therapeutics. The present review is focused on sources, chemical composition, biosynthetic pathways of EPS and their biological potential. More attention has been given to the scientific investigations on antimicrobial, antitumor, anti-biofilm, antiviral, anti-inflammatory and immunomodulatory activities.

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confidence: 99%

Exopolysaccharides from probiotic bacteria and their health potential

Angelin

Kavitha

2020

International Journal of Biological Macromolecules

360

225

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Extracellular polysaccharides produced by bacteria of the Leuconostoc genus

Zikmanis

Brants²,

Koļesovs

et al. 2020

World J Microbiol Biotechnol

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Structurally diverse biopolymers, including extracellular polysaccharides (EPS), synthesized by bacteria can possess physicochemical and functional properties that make them important products of microbial synthesis with a broad and versatile biotechnological potential. Leuconostoc spp. belongs to the group of lactic acid bacteria as one of the predominant members and are relevant not only in varied food fermentations, but also can be employed in the production of extracellular homopolysaccharides (HoPS) such as α-glucans (dextran, alternan) and β-fructans (levan,inulin) from the sucrose-containing substrates. EPS are synthesized by specific Leuconostoc spp. extracellular glycosyltransferases [dextran sucrase, alternansucrase (ASR)] and fructosyltransferases (levansucrase, inulosucrase) and enzymatic reactions can be performed in whole culture systems as well as using cell-free enzymes. Both α-glucans and β-fructans have a wide range of properties, mostly depending on their pattern of linkages, which, although differing in some respects, make suitable prerequisites for their versatile application in many fields, especially in the food industry and biomedicine. As a rule, these properties (polymer type, molecular mass, rheological parameters), as well as the overall EPS yield, are strain-specific for the selected producers and depend to a large extent on the nutritional and growth conditions used, which in many cases remain not sufficiently optimized for Leuconostoc spp. This review summarizes the current knowledge on the potential of Leuconostoc spp. to produce commercially relevant EPS, including information on their applications in various fields, producer strains, production methods and techniques used, selected conditions, the productivity of bioprocesses as well as the possible use of renewable resources for their development.

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Stability mechanism of the silica suspension in the Sinorhizobium meliloti 1021 exopolysaccharide presence

Szewczuk-Karpisz

Wiśniewska

Pac-Sosińska

et al. 2016

Journal of Industrial and Engineering Chemistry

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Biosynthesis, Purification and Biotechnological Use of Exopolysaccharides Produced by Lactic Acid Bacteria

Cited by 4 publications

References 112 publications

Exopolysaccharides from probiotic bacteria and their health potential

Exopolysaccharides from probiotic bacteria and their health potential

Extracellular polysaccharides produced by bacteria of the Leuconostoc genus

Stability mechanism of the silica suspension in the Sinorhizobium meliloti 1021 exopolysaccharide presence

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