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Chitin Oligosaccharide N , N ′-Diacetylchitobiose (GlcNAc 2 ) as Antimicrobial Coating against Listeria monocytogenes on Ready-to-Eat Shrimp

Author

Listed:
  • Munira Zainal Abidin

    (Department of Technology and Natural Resources, Faculty of Applied Sciences and Technology, KM1 UTHM Pagoh Campus, Universiti Tun Hussein Onn Malaysia, Pagoh 84600, Johor, Malaysia
    Department of Food and Nutritional Sciences, University of Reading, Whiteknights, Reading RG6 6AP, UK)

  • Konstantina Kourmentza

    (Department of Chemical and Environmental Engineering, The University of Nottingham, University Park, Nottingham NG7 2RD, UK)

  • Keshavan Niranjan

    (Department of Food and Nutritional Sciences, University of Reading, Whiteknights, Reading RG6 6AP, UK)

Abstract

N , N ′-diacetylchitobiose, also known as GlcNAc 2 , is a chitin oligosaccharide and is reported to possess antimicrobial activity against pathogenic bacteria. In this study, 1% ( w / v ) GlcNAc 2 solution was applied on ready-to-eat (RTE) shrimp and evaluated as an antimicrobial coating against Listeria monocytogenes during storage at 4 °C for 16 days. Texture properties, colour, TBARS values, moisture content and bacterial counts were monitored and analysed every four days. The results indicated that the GlcNAc 2 coating retarded the changes in texture properties, TBARS values and moisture content of the RTE shrimp during storage. The presence of GlcNAc 2 showed no significant changes in RTE shrimp colour in contrast to the control. However, the growth of L. monocytogenes inoculated on the GlcNAc 2 -coated RTE shrimp was slower than that of the control sample with the highest log reduction of 0.5 log CFU/mL being observed. This study showed that the GlcNAc 2 used as an antimicrobial coating was able to inhibit the growth of L. monocytogenes , while maintaining the quality of the RTE shrimp during refrigerated storage.

Suggested Citation

  • Munira Zainal Abidin & Konstantina Kourmentza & Keshavan Niranjan, 2023. "Chitin Oligosaccharide N , N ′-Diacetylchitobiose (GlcNAc 2 ) as Antimicrobial Coating against Listeria monocytogenes on Ready-to-Eat Shrimp," Sustainability, MDPI, vol. 15(13), pages 1-11, June.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:13:p:10099-:d:1179454
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