Document Type
Article
Publication Date
1-1-2019
Abstract
Antibacterial activity of high molecular weight water-soluble (HMWWS) chitosan (800 kDa) was investigated against four Gram-negative (Escherichia coli, Salmonella typhimurium, Vibrio cholerae and Vibrio parahaemolyticus) and two Gram-positive (Staphylococcus aureus and Listeria monocytogenes) bacteria. Catfish fillets were surface-inoculated with these food-borne pathogens and coated with chitosan dissolved in aspartic acid (AS) or acetic acid (AC) solution at different concentrations (1% or 3%). Samples were stored at 4 °C for 8 days, except for those inoculated with Vibrio species (10 °C for 6 days). Overall, the most effective coating treatment was the 3% HMWWS chitosan in AS solution (800AS3%). Compared with the control, significant (P < 0.05) reductions caused by 800AS3% were observed for all tested pathogens at the end of storage. The growth of V. parahaemolyticus was completely suppressed by 800AS3%. This study demonstrated that HMWWS chitosan in AS solution could be used as an alternative antimicrobial coating for catfish fillets.
Publication Source (Journal or Book title)
International Journal of Food Science and Technology
First Page
25
Last Page
33
Recommended Citation
Karsli, B., Caglak, E., Li, D., Rubio, N., Janes, M., & Prinyawiwatkul, W. (2019). Inhibition of selected pathogens inoculated on the surface of catfish fillets by high molecular weight chitosan coating. International Journal of Food Science and Technology, 54 (1), 25-33. https://doi.org/10.1111/ijfs.13897