Journal
MARINE DRUGS
Volume 13, Issue 11, Pages 6723-6739Publisher
MDPI AG
DOI: 10.3390/md13116723
Keywords
exopolysaccharide; Vibrio alginolyticus; amino acids; ingredient
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Funding
- Brittany Regional Council
- OSEO as part of the FUI-AAP14 Poly-mer project
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Vibrio alginolyticus (CNCM I-4994) secretes an exopolysaccharide that can be used as an ingredient in cosmetic applications. The structure was resolved using chromatography and one- and two-dimensional NMR spectroscopy experiments. The results show that the carbohydrate backbone is made of two residues: d-galacturonic acid and N-acetyl-d-glucosamine (GlcNac), which together constitute a tetrasaccharide repetition unit: [3)--d-GalA-(14)--d-GalA-(13)--d-GalA-(13)--GlcNAc(1]. Two amino acids, alanine and serine, are linked to GalA residues via amido linkages. The position and the distribution of the amino acids were characterized by two-dimensional NMR spectroscopy. To our knowledge, this is the first description of a structure for a marine exopolysaccharide decorated with an amino acid.
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