title: Use of E-beam radiation to eliminate Listeria monocytogenes from surface mould cheese.
abstract: Camembert and Brie soft cheese varieties were subjected to E-beam irradiation as a sanitation treatment. The effects of treatments on microbiota and selected physicochemical properties were also studied. The absorbed doses required to meet the food safety objective (FSO) according to EU and USDA criteria for Listeria monocytogenes were 1.27 and 2.59 kGy, respectively. The bacterial load, mainly lactic acid bacteria, was reduced by the treatment but injured cells were recovered during storage at 14°C. The radiation treatment gave rise to negligible changes in the pH and water activity at doses required to achieve microbial safety.
authors.affiliation: Department of Nutrition, Food Science and Food Technology. School of Veterinary, Complutense University of Madrid, Madrid, Spain.
authors.forename: Raquel
authors.initials: R
authors.lastname: Velasco
authors.affiliation: Department of Nutrition, Food Science and Food Technology. School of Veterinary, Complutense University of Madrid, Madrid, Spain.
authors.forename: Juan A
authors.initials: JA
authors.lastname: Ordóñez
authors.affiliation: Department of Nutrition, Food Science and Food Technology. School of Veterinary, Complutense University of Madrid, Madrid, Spain.
authors.forename: M Isabel
authors.initials: MI
authors.lastname: Cambero
authors.affiliation: Department of Nutrition, Food Science and Food Technology. School of Veterinary, Complutense University of Madrid, Madrid, Spain.
authors.forename: M Concepción
authors.initials: MC
authors.lastname: Cabeza
mesh_terms: D002611:Cheese / Q000382:microbiology*; D015169:Colony Count, Microbial; D005514:Food Irradiation / Q000379:methods / Q000592:standards*; D005516:Food Microbiology; D006863:Hydrogen-Ion Concentration / Q000528:radiation effects; D008089:Listeria monocytogenes / Q000528:radiation effects*
keywords: E-beam radiation; Listeria monocytogenes; food safety objective (FSO); soft mould-ripened cheeses