Cited by 84Polysaccharides Composition and ApplicationsProbiotics and Fermented FoodsBiopolymer Synthesis and Applications

Biosynthesis of Dextran by Weissella confusa and Its In Vitro Functional Characteristics

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Rosca, Irina, Petrovici, Anca Roxana, Peptanariu, Dragos, Nicolescu, Alina, Dodi, Gianina, Avadanei, Mihaela, Ivanov, Iuliu Cristian, Bostanaru, Andra Cristina +2 more·2018·International Journal of Biological Macromolecules

Abstract

The aim of this study was to monitor the influence of the fermentation conditions on the exopolysaccharides (EPS) biosynthesis. For this, different culture media compositions were tested on an isolated lactic acid bacteria (LAB) strain, identified by 16S rDNA sequence as being Weissella confusa. It was proved that this bacterial strain culture in MRS medium supplemented with 80g/L sucrose and dissolved in UHT milk produced up to 25.2g/L of freeze-dried EPS, in static conditions, after 48h of fermentative process. Using FTIR and NMR analysis, it was demonstrated that the obtained EPS is a dextran. The thermal analysis revealed a dextran structure with high purity while GPC analysis depicted more fractions, which is normal for a biological obtained polymer. A concentration up to 3mg/mL of dextran proved to have no cytotoxic effect on normal human dermal fibroblasts (NHDF). Moreover, at this concentration, dextran breaks up to 70% of the biofilms formed by the Candida albicans SC5314 strain, and has no antimicrobial activity against standard bacterial strains. Due to their characteristics, these EPS are suitable as hydrophilic matrix for controlled release of drugs in pharmaceutical industry.

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Crossref · 10.1016/j.ijbiomac.2017.10.048

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Authors
Rosca, I., Petrovici, A. R., Peptanariu, D., Nicolescu, A., Dodi, G., Avadanei, M., Ivanov, I. C., Bostanaru, A. C., Mares, M., & Ciolacu, D.
Affiliations
  • Institutul de Chimie Macromoleculară Petru Poni (RO)
  • Institutul Regional de Oncologie (RO)
Corresponding author
  • Petrovici, Anca Roxana
  • Ciolacu, Diana
Venue
International Journal of Biological Macromolecules
Publisher
Elsevier BV
Published
2018-02
Volume
107
Issue
Pt B
Pages
1765-1772
ISSN
0141-8130 (ISSN-L)
OpenAlex
W2763968901
Cited by
84
References
38
Citations by year
2026: 7 · 2025: 6 · 2024: 14 · 2023: 14 · 2022: 11 · 2021: 13 · 2020: 10 · 2019: 5 · 2018: 4
FWCI
5.85
Type
journal article
Language
en
Open access
Locations
  • International Journal of Biological Macromolecules (publishedVersion)
  • PubMed (publishedVersion)
  • Zenodo (CERN European Organization for Nuclear Research) (submittedVersion, other-oa)
Funders
  • Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii (PN-II-RU-TE-2014-4-0558)
  • Corporation for National and Community Service
  • Horizon 2020 (667387 WIDESPREAD 2-2014)
  • Horizon 2020 Framework Programme
  • Autoritatea Natională pentru Cercetare Stiintifică
Topics
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Polysaccharides Composition and Applications
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Biopolymer Synthesis and Applications
Keywords
dextran synthesis, Weissella confusa, exopolysaccharides, lactic acid bacteria, fermentation conditions, culture medium composition, UHT milk, sucrose supplementation, MRS medium, cytotoxicity, human dermal fibroblasts, biofilm eradication, Candida albicans, controlled drug release, hydrophilic matrix
MeSH terms
Antifungal Agents, Calorimetry, Differential Scanning, Cell Survival, Chromatography, Gel, Dextrans, Fermentation, Humans, Microbial Sensitivity Tests, Molecular Weight, Magnetic Resonance Spectroscopy, Thermogravimetry, Cell Death, Spectroscopy, Fourier Transform Infrared, Weissella

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