Production and Functional Properties of Exopolymers

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Biomacromolecules, Biobased and Biodegradable Polymers".

Deadline for manuscript submissions: closed (31 March 2024) | Viewed by 1140

Special Issue Editors


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Guest Editor
The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Department of General Microbiology, 26 Acad. Georgi Bonchev Str., 1113 Sofia, Bulgaria
Interests: extremophiles; еxopolysaccharides; biosynthesis; fermentation processes; mass transfer coefficients; structure; biological role; thermostable enzymes

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Guest Editor
Department of Bio-Engineering, Istanbul Medeniyet Universitesi, Kadıköy/İstanbul, Turkey
Interests: systems biology; genomics; exopolysaccharides; glycobiology; metabolic modeling; bioprocess engineering

Special Issue Information

Dear Colleagues,

It is a well-known fact that polymers are an important part of modern society. Along with the benefits, synthetic polymers are also a major environmental pollutant. One of the possible solutions to this problem is offered by exopolysaccharides (EPS), synthesized by microorganisms due to their non-toxicity, biodegradability, and biocompatibility, which makes them desirable for use in pharmacy, biomedicine, the food industry, cosmetics, etc. Moreover, they are an eco-friendly and quickly renewable resource compared to that produced by plants. Exopolymers have a markedly important biological role for cells and a wide variety in monosaccharide composition, suggesting different physico-chemical properties. Hence, it is important to describe new species that are able to produce exopolysaccharides, as well as to gain knowledge about the fundamental understanding of genes and mechanisms involved in EPS biosynthesis and regulation of their structures.

The aim of this Special Issue is to encourage the publication of new studies on the production, biological role, functional properties, and possible applications of exopolysaccharides produced by microorganisms.

Dr. Nadja Stoicheva Radchenkova
Dr. Songül Yaşar Yıldız
Guest Editors

Manuscript Submission Information

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Keywords

  • exopolysaccharides
  • biosynthesis
  • fermentation processes
  • structure
  • biological role
  • biotechnological importance

Published Papers (1 paper)

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Review

21 pages, 2183 KiB  
Review
Exploring Extremophiles from Bulgaria: Biodiversity, Biopolymer Synthesis, Functional Properties, Applications
by Songül Yaşar Yıldız and Nadja Radchenkova
Polymers 2024, 16(1), 69; https://doi.org/10.3390/polym16010069 - 25 Dec 2023
Viewed by 840
Abstract
Bulgaria stands out as a country rich in diverse extreme environments, boasting a remarkable abundance of mineral hot waters, which positions it as the second-largest source of such natural resources in Europe. Notably, several thermal and coastal solar salterns within its territory serve [...] Read more.
Bulgaria stands out as a country rich in diverse extreme environments, boasting a remarkable abundance of mineral hot waters, which positions it as the second-largest source of such natural resources in Europe. Notably, several thermal and coastal solar salterns within its territory serve as thriving habitats for thermophilic and halophilic microorganisms, which offer promising bioactive compounds, including exopolysaccharides (EPSs). Multiple thermophilic EPS producers were isolated, along with a selection from several saltern environments, revealing an impressive taxonomic and bacterial diversity. Four isolates from three different thermophilic species, Geobacillus tepidamans V264, Aeribacillus pallidus 418, Brevibacillus thermoruber 423, and Brevibacillus thermoruber 438, along with the halophilic strain Chromohalobacter canadensis 28, emerged as promising candidates for further exploration. Optimization of cultivation media and conditions was conducted for each EPS producer. Additionally, investigations into the influence of aeration and stirring in laboratory bioreactors provided valuable insights into growth dynamics and polymer synthesis. The synthesized biopolymers showed excellent emulsifying properties, emulsion stability, and synergistic interaction with other hydrocolloids. Demonstrated biological activities and functional properties pave the way for potential future applications in diverse fields, with particular emphasis on cosmetics and medicine. The remarkable versatility and efficacy of biopolymers offer opportunities for innovation and development in different industrial sectors. Full article
(This article belongs to the Special Issue Production and Functional Properties of Exopolymers)
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