2.6. Microbiological analysis
Salmon slices were diluted 10-fold with sterile 0.1% (wt/vol) peptone water solution and homogenized with a Stomacher 400
(A.J. Seward Ltd., London, UK). Decimal dilutions prepared in the same solution, spread on duplicated plates of PALCAM Listeria Selective Agar (Merck, Darmstadt, Germany) and incubated at 37 C for 48 h.