Behaviour of Listeria monocytogenes in artisanal raw milk Pecorino Umbro cheese: a microbiological challenge test

In the present study, a microbiological challenge test in artificially contaminated raw milk <em>Pecorino Umbro</em> cheese during cheese-making was carried out. Raw ewe milk was contaminated by a suspension of particular <em>Listeria monocytogenes</em> strains. The number of...

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Main Authors: Roberta Ortenzi, Raffaella Branciari, Sara Primavilla, David Ranucci, Andrea Valiani
Format: Article
Language:English
Published: PAGEPress Publications 2015-09-01
Series:Italian Journal of Food Safety
Subjects:
Online Access:http://www.pagepressjournals.org/index.php/ijfs/article/view/5370
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author Roberta Ortenzi
Raffaella Branciari
Sara Primavilla
David Ranucci
Andrea Valiani
author_facet Roberta Ortenzi
Raffaella Branciari
Sara Primavilla
David Ranucci
Andrea Valiani
author_sort Roberta Ortenzi
collection DOAJ
description In the present study, a microbiological challenge test in artificially contaminated raw milk <em>Pecorino Umbro</em> cheese during cheese-making was carried out. Raw ewe milk was contaminated by a suspension of particular <em>Listeria monocytogenes</em> strains. The number of <em>L. monocytogenes</em> and <em>L. monocytogenes</em> dynamic growth were evaluated during cheese-making and storage. A significant decrease of the viable count of <em>L. monocytogenes</em> was observed during ripening and<em> L. monocytogenes</em> viable count was below the limit of quantification during storage. The results show that the product is unable to support the growth of the pathogen.
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spelling doaj.art-8f5edd81b37f49348513263be86d89f32022-12-21T23:47:12ZengPAGEPress PublicationsItalian Journal of Food Safety2239-71322015-09-014310.4081/ijfs.2015.53704460Behaviour of Listeria monocytogenes in artisanal raw milk Pecorino Umbro cheese: a microbiological challenge testRoberta Ortenzi0Raffaella Branciari1Sara Primavilla2David Ranucci3Andrea Valiani4Institute for Experimental Veterinary Medicine of Umbria and Marche, PerugiaDepartment of Veterinary Medicine, University of PerugiaInstitute for Experimental Veterinary Medicine of Umbria and Marche, PerugiaDepartment of Veterinary Medicine, University of PerugiaInstitute for Experimental Veterinary Medicine of Umbria and Marche, PerugiaIn the present study, a microbiological challenge test in artificially contaminated raw milk <em>Pecorino Umbro</em> cheese during cheese-making was carried out. Raw ewe milk was contaminated by a suspension of particular <em>Listeria monocytogenes</em> strains. The number of <em>L. monocytogenes</em> and <em>L. monocytogenes</em> dynamic growth were evaluated during cheese-making and storage. A significant decrease of the viable count of <em>L. monocytogenes</em> was observed during ripening and<em> L. monocytogenes</em> viable count was below the limit of quantification during storage. The results show that the product is unable to support the growth of the pathogen.http://www.pagepressjournals.org/index.php/ijfs/article/view/5370Listeria monocytogenesMicrobiological challeng testEwe cheese
spellingShingle Roberta Ortenzi
Raffaella Branciari
Sara Primavilla
David Ranucci
Andrea Valiani
Behaviour of Listeria monocytogenes in artisanal raw milk Pecorino Umbro cheese: a microbiological challenge test
Italian Journal of Food Safety
Listeria monocytogenes
Microbiological challeng test
Ewe cheese
title Behaviour of Listeria monocytogenes in artisanal raw milk Pecorino Umbro cheese: a microbiological challenge test
title_full Behaviour of Listeria monocytogenes in artisanal raw milk Pecorino Umbro cheese: a microbiological challenge test
title_fullStr Behaviour of Listeria monocytogenes in artisanal raw milk Pecorino Umbro cheese: a microbiological challenge test
title_full_unstemmed Behaviour of Listeria monocytogenes in artisanal raw milk Pecorino Umbro cheese: a microbiological challenge test
title_short Behaviour of Listeria monocytogenes in artisanal raw milk Pecorino Umbro cheese: a microbiological challenge test
title_sort behaviour of listeria monocytogenes in artisanal raw milk pecorino umbro cheese a microbiological challenge test
topic Listeria monocytogenes
Microbiological challeng test
Ewe cheese
url http://www.pagepressjournals.org/index.php/ijfs/article/view/5370
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