Rediscovering bacterial exopolysaccharides of terrestrial and marine origins: novel insights on their distribution, biosynthesis, biotechnological production, and future perspectives

Zayed, Ahmed; Mansour, Mai K.; Sedeek, Mohamed S.; Habib, M. Hadj; Ulber, Roland; Farag, Mohamed A.

doi:10.1080/07388551.2021.1942779

Cited by 11 publications

(8 citation statements)

References 158 publications

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“…Several reviews have summarized the culture and fermentation conditions, distribution, biosynthesis, and biotechnological production of microbial EPS from marine sources [ 1 , 12 , 14 , 19 , 20 , 21 , 79 , 80 , 81 ]. In the past decade, with the development of separation and identification technology, numbers of new marine microorganisms have been identified.…”

Section: The Structural Characteristics Of Marine Epsmentioning

confidence: 99%

“…Joseph et al reported that the EPS produced by the marine psychrophilic bacterium Colwellia psychrerythraea strain 34H could affect the carbon cycle and nutrient transfer in the deep sea [ 161 ]. In the Antarctic environment, the EPS promote the accumulation of soil organic matter at the landscape level in depauperate Antarctic soil [ 79 , 162 ]. Antarctic green algae sequester 479,000 tons of carbon each season [ 163 ].…”

Section: Environmental Remediationmentioning

confidence: 99%

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Exopolysaccharides from Marine Microbes: Source, Structure and Application

Zheng

et al. 2022

Marine Drugs

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The unique living environment of marine microorganisms endows them with the potential to produce novel chemical compounds with various biological activities. Among them, the exopolysaccharides produced by marine microbes are an important factor for them to survive in these extreme environments. Up to now, exopolysaccharides from marine microbes, especially from extremophiles, have attracted more and more attention due to their structural complexity, biodegradability, biological activities, and biocompatibility. With the development of culture and separation methods, an increasing number of novel exopolysaccharides are being found and investigated. Here, the source, structure and biological activities of exopolysaccharides, as well as their potential applications in environmental restoration fields of the last decade are summarized, indicating the commercial potential of these versatile EPS in different areas, such as food, cosmetic, and biomedical industries, and also in environmental remediation.

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Section: The Structural Characteristics Of Marine Epsmentioning

confidence: 99%

Section: Environmental Remediationmentioning

confidence: 99%

Exopolysaccharides from Marine Microbes: Source, Structure and Application

Zheng

et al. 2022

Marine Drugs

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“…116 However, plant cells are relatively different from bacteria; plant cells are not encapsulated in extracellular polymeric substances (EPS), as in the case of bacteria that are used as an attachment tool to solid surfaces. 117,118 Additionally, plant cells lack pili and their biogenetic genes that promote aggregates and biofilm formation, as in case of Lactococcus lactis strain IL1403. 119 Atomic force microscopy (AFM) easily measures single bacterial cell (0.2-10 μm size ranges) adhesion interactions and biofilm formation.…”

Section: Synthetic Biofilms Of Plant Cells As Production Systemsmentioning

confidence: 99%

Productive biofilms: from prokaryotic to eukaryotic systems

Schmeckebier

Zayed

Ulber

2022

J of Chemical Tech & Biotech

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Biofilms have great potential for producing valuable products more efficiently than suspended cultivations when it comes to yield and productivity. In addition, biofilms have the advantage of cell protection and increased resistance to environmental influences. Therefore, productive biofilms are used in biofilm reactors to produce value‐added products. A summary of possible applications for biofilm reactors is given here. In addition, the surfaces on which biofilms are cultivated are briefly explained. The possibility of using biofilms is not limited to prokaryotic systems. Thus, eukaryotic systems can also be cultivated as biofilms to produce valuable products. Therefore, both prokaryotic and eukaryotic productive biofilms will be described in this review. In the case of eukaryotic systems, fungal biofilms and plant biofilms will be discussed. The biofilm formation of the different cell types is listed and the productivity of a cell line on a corresponding substrate is summarized. Finally, the investigation methods of biofilms are discussed, as these methods are essential to understanding biofilms. © 2022 The Authors. Journal of Chemical Technology and Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).

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“…Although some of these lipids were also reported to be constituents of the biofilm extracellular matrix, it has been proposed that their major participation in biofilm formation is more likely to be in direct interbacterial adhesion and involves their hydrophobicity (at least in the case of the less amphiphilic ones) [59]. While exopolysaccharides are abundant in the extracellular matrices of many microbes [60][61][62][63][64], evidence of these complex carbohydrates in mycobacterial biofilms have been lacking. Very recently, a rapidly inducible surface-attached in vitro biofilm model was devised for M. tuberculosis [47,65].…”

Section: Adhesive Interactions In Mycobacterial Biofilmsmentioning

confidence: 99%

Mycobacterial Adhesion: From Hydrophobic to Receptor-Ligand Interactions

2022

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Adhesion is crucial for the infective lifestyles of bacterial pathogens. Adhesion to non-living surfaces, other microbial cells, and components of the biofilm extracellular matrix are crucial for biofilm formation and integrity, plus adherence to host factors constitutes a first step leading to an infection. Adhesion is, therefore, at the core of pathogens’ ability to contaminate, transmit, establish residency within a host, and cause an infection. Several mycobacterial species cause diseases in humans and animals with diverse clinical manifestations. Mycobacterium tuberculosis, which enters through the respiratory tract, first adheres to alveolar macrophages and epithelial cells leading up to transmigration across the alveolar epithelium and containment within granulomas. Later, when dissemination occurs, the bacilli need to adhere to extracellular matrix components to infect extrapulmonary sites. Mycobacteria causing zoonotic infections and emerging nontuberculous mycobacterial pathogens follow divergent routes of infection that probably require adapted adhesion mechanisms. New evidence also points to the occurrence of mycobacterial biofilms during infection, emphasizing a need to better understand the adhesive factors required for their formation. Herein, we review the literature on tuberculous and nontuberculous mycobacterial adhesion to living and non-living surfaces, to themselves, to host cells, and to components of the extracellular matrix.

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Rediscovering bacterial exopolysaccharides of terrestrial and marine origins: novel insights on their distribution, biosynthesis, biotechnological production, and future perspectives

Cited by 11 publications

References 158 publications

Exopolysaccharides from Marine Microbes: Source, Structure and Application

Exopolysaccharides from Marine Microbes: Source, Structure and Application

Productive biofilms: from prokaryotic to eukaryotic systems

Mycobacterial Adhesion: From Hydrophobic to Receptor-Ligand Interactions

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