Inactivation of Listeria monocytogenes by pulsed light in packaged and sliced salpicão, a ready-to-eat traditional cured smoked meat sausage

نویسندگان

چکیده

The efficacy of pulsed light (PL) for the surface decontamination a sliced ready-to-eat cured meat product, salpicão, was studied. slices inoculated with Listeria monocytogenes (107 cfu/g), and then PL treatment applied. Microbial analyses (L. monocytogenes, coagulase-negative Staphylococci (CNS), Lactic acid bacteria (LAB) Enterobacteriaceae) were performed immediately after treatment. pH, aw, colour volatile profile also evaluated. Response Surface experimental Design applied regarding factors voltage (ranging from 1828 to 3000 V) distance 2.6 5 cm) source, maximum 16.11 J/cm2 energy dose achieved. A reduction 1.58 log cfu/g in L. count obtained when fluence 5.31 Enterobacteriaceae, LAB CNS endogenous microbial populations not influenced by application reduced a* values b* without impacting sample ΔE or L* values. potential oxidative effect this technology evaluated solid-phase microextraction (SPME) gas chromatography-mass spectrometry (GC-MS), no significant changes verified its product.

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ژورنال

عنوان ژورنال: Lebensmittel-Wissenschaft & Technologie

سال: 2023

ISSN: ['1096-1127', '0023-6438']

DOI: https://doi.org/10.1016/j.lwt.2023.114641