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Preparation and characterization of chitosan oligosaccharide derivatives containing cinnamyl moieties with enhanced antibacterial activities

LWT, ISSN: 0023-6438, Vol: 147, Page: 111663
2021
  • 34
    Citations
  • 0
    Usage
  • 22
    Captures
  • 0
    Mentions
  • 0
    Social Media
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Metrics Details

  • Citations
    34
    • Citation Indexes
      34
  • Captures
    22

Article Description

The novel chitosan oligosaccharide derivatives modified with cinnamyl onto the NH 2 position were synthesized through a one-step reaction and their in vitro antibacterial activities were ascertained. The structural characterization and properties of derivatives were verified by UV–vis, FT-IR, 1 H, 13 C NMR, TGA, XRD, and elemental analysis. The degrees of substitution (DS) of derivatives were from 0.255 to 0.366 with yields up to 82%. The in vitro antibacterial activities for the novel chitosan oligosaccharide derivatives against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ) were greatly improved compared to COS, sodium benzoate, and potassium sorbate. Moreover, their antibacterial activities were DS-dependent and more sensitive to S. aureus than E. coli. This study demonstrated that the new derivatives were expected to be a promising potential antimicrobial agent in the food industry.

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