The size and shape of three water-soluble, non-ionic polysaccharides produced by lactic acid bacteria: A comparative study
Open accessAbstract
Three water-soluble, non-ionic extracellular polysaccharides (EPS) obtained from lactic acid bacteria (S. thermophilus THS, L. helveticus K16 and S. thermophilus ST1) were subjected to a comparative study by means of multidetector size-exclusion chromatography, providing distributions and averages of molar masses, radii of gyration and intrinsic viscosities. All polysaccharides displayed random coil character. Further analysis of the data reveals differences in chain stiffness and extension that could be well correlated to structural features. The calculated persistence lengths ranged from 5 to 10nm and fall within the range typical for many single-stranded bacterial or plant polysaccharides. The ST1 polysaccharide had the highest molar mass but the lowest persistence length, which is attributed to the presence of the flexible (1→6)-linkage in the main chain.
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LAB inoculants have a long history and have been incorporated into silage making as an effective technique to increase lactic acid production.
“LAB inoculants have a long history and have been incorporated into silage making as an effective technique to increase LA production [14].”
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References 50 · Cited by 19
- Authors
- Dalheim, M. Ø., Arnfinnsdottir, N. B., Widmalm, G., & Christensen, B. E.
- Affiliations
- Norwegian University of Science and Technology (NO)
- Stockholm University (SE)
- Corresponding author
- Christensen, Bjørn E.
- Venue
- Carbohydrate Polymers
- Publisher
- Elsevier BV
- Published
- 2016-05
- Volume
- 142
- Pages
- 91-97
- ISSN
- 0144-8617 (ISSN-L)
- OpenAlex
- W2243227322
- Cited by
- 19
- References
- 50
- Citations by year
- 2024: 1 · 2023: 4 · 2021: 4 · 2020: 2 · 2019: 2 · 2018: 3 · 2017: 2 · 2016: 1
- FWCI
- 3.36
- Type
- journal article
- Language
- en
- Open access
- green
- urn.kb.se
- Licence
- Locations
- Carbohydrate Polymers (publishedVersion)
- PubMed (publishedVersion)
- KTH Publication Database DiVA (KTH Royal Institute of Technology) (submittedVersion, other-oa)
- 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
- Physical Sciences › Chemical Engineering › Fluid Flow and Transfer Processes › Rheology and Fluid Dynamics Studies
- Keywords
- exopolysaccharides, lactic acid bacteria, Streptococcus thermophilus, Lactobacillus helveticus, molecular weight distribution, radius of gyration, intrinsic viscosity, persistence length, chain stiffness, random coil
- MeSH terms
- Carbohydrate Conformation, Lactobacillus, Polysaccharides, Bacterial, Solubility, Streptococcus, Viscosity, Water
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