Application of the curcumin-mediated photodynamic inactivation for preserving the storage quality of salmon contaminated with L. monocytogenes

•The Curcumin-mediated photodynamic inactivation killed L. monocytogenes on salmon.•The photodynamic inactivation decreased the growth rate of survival L. monocytogenes.•The photodynamic inactivation decelerated the protein degradation of salmon.•The photodynamic inactivation reduced the lipid oxidation and loss of water in salmon. The effect of curcumin-mediated blue light-emitting diode (LED) photodynamic inactivation (PDI) for preserving the quality of salmon contaminated with Listeria monocytogenes was investigated by microbiological, physical, chemical and histological methods during sample storage at 4 ℃ and 25 ℃. The results showed that PDI decelerated the proliferation of L. monocytogenes on salmon during storage at 25 ℃, with the maximum inhibition reaching 4.0 log10 CFU/g (99.99%), compared to the negative control. Moreover, PDI greatly retarded the increase in pH (P