Effect of combinations of high-pressure treatment and bacteriocin-producing lactic acid bacteria on the survival of Listeria monocytogenes in raw milk cheese |
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| Affiliation: | 1. INRA, UMR1253 Science et Technologie du Lait et de l''?uf, 65 rue de Saint Brieuc, 35000 Rennes, France;2. AGROCAMPUS OUEST, UMR1253 Science et Technologie du Lait et de l''?uf, 65 rue de Saint Brieuc, 35000 Rennes, France;3. Laboratoires Standa, 14000 Caen, France;1. Department of Food Science, Faculty of Food Engineering, University of Campinas, Campinas, SP, Brazil;2. Department of Clinical, Toxicological and Bromatological Analyses, Faculty of Pharmaceutical Sciences, University of São Paulo, Ribeirão Preto, SP, Brazil;3. Department of Food Engineering, Faculty of Food Engineering, University of Campinas, Campinas, SP, Brazil;1. Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Bari 70126, Italy;2. Faculty of Science and Technology, Libera Università di Bolzano, Bolzano, Italy;3. Technologie et Analyses Laitières, INRA, Poligny UR 342, France;1. Faculty of Engineering, Jujuy National University – GIDANO-INSIBIO-CONICET, 4600 San Salvador de Jujuy, Jujuy, Argentina;2. CERELA-CONICET, Chacabuco 145, 4000 San Miguel de Tucumán, Tucumán, Argentina |
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| Abstract: | The combined effect of high-pressure (HP) treatment and bacteriocin-producing lactic acid bacteria (BP-LAB) on the survival of Listeria monocytogenes Scott A in cheeses made from raw milk that was inoculated with the pathogen at 4.80 log cfu mL?1, a commercial starter and one of seven strains of BP-LAB was investigated. On day 3, the counts of L. monocytogenes were 7.03 log cfu g?1 in a control cheese (without BP-LAB, not HP treated), 6.06–6.74 log cfu g?1 in cheeses with BP-LAB, 6.13 log cfu g?1 in a cheese without BP-LAB and treated on day 2 at 300 MPa, 2.01 log cfu g?1 in a cheese without BP-LAB and treated on day 2 at 500 MPa, 3.83–5.43 log cfu g?1 in cheeses with BP-LAB and treated on day 2 at 300 MPa, and 1.81 log cfu g?1 or less in cheeses with BP-LAB and treated on day 2 at 500 MPa. HP treatment was more effective on day 51 than on day 2. |
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