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Growth of Listeria monocytogenes on vacuum-packaged horsemeat for human consumption

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Title: Growth of Listeria monocytogenes on vacuum-packaged horsemeat for human consumption
Authors: Bonilauri, P.1 reggioem@bs.izs.it, Liuzzo, G.2, Merialdi, G.1, Bentley, S.3, Poeta, A.4, Granelli, F.1, Dottori, M.1
Source: Meat Science. Dec2004, Vol. 68 Issue 4, p671-674. 4p.
Subjects: Packaging, Meat industry, Cattle industry, Animal industry
Abstract: In order to investigate the likelihood of Listeria monocytogenes (serotype 4b, ATCC 19115) growth on vacuum-packaged horsemeat at refrigeration temperature, fourteen horsemeat surface/volume homogeneous 150 g weight pieces were superficially inoculated with serotype 4b L. monocytogenes and vacuum packaged. The samples were stored at 4 ± 1 °C. Two pieces (one for pH determination and one for L. monocytogenes counts) were examined at days 0, 7, 14, 21, 28, 35 and 42. Surface pH did not show significant variations during the experiment. The average L. monocytogenes initial contamination level was 1.77log10 CFU/g. A lag phase of 7 days was recorded. The exponential growth rate between day 7 to day 35 was 0.125log10 CFU/day, corresponding to 3.51log10 CFU/g in 28 days. At the end of the experiment the mean L. monocytogenes log10 CFU/g was 5.78. [Copyright &y& Elsevier]
Copyright of Meat Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 14102535
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Growth of Listeria monocytogenes on vacuum-packaged horsemeat for human consumption
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  Data: <searchLink fieldCode="JN" term="%22Meat+Science%22">Meat Science</searchLink>. Dec2004, Vol. 68 Issue 4, p671-674. 4p.
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  Data: <searchLink fieldCode="DE" term="%22Packaging%22">Packaging</searchLink><br /><searchLink fieldCode="DE" term="%22Meat+industry%22">Meat industry</searchLink><br /><searchLink fieldCode="DE" term="%22Cattle+industry%22">Cattle industry</searchLink><br /><searchLink fieldCode="DE" term="%22Animal+industry%22">Animal industry</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: In order to investigate the likelihood of Listeria monocytogenes (serotype 4b, ATCC 19115) growth on vacuum-packaged horsemeat at refrigeration temperature, fourteen horsemeat surface/volume homogeneous 150 g weight pieces were superficially inoculated with serotype 4b L. monocytogenes and vacuum packaged. The samples were stored at 4 ± 1 °C. Two pieces (one for pH determination and one for L. monocytogenes counts) were examined at days 0, 7, 14, 21, 28, 35 and 42. Surface pH did not show significant variations during the experiment. The average L. monocytogenes initial contamination level was <f>1.77log10</f> CFU/g. A lag phase of 7 days was recorded. The exponential growth rate between day 7 to day 35 was <f>0.125log10</f> CFU/day, corresponding to <f>3.51log10</f> CFU/g in 28 days. At the end of the experiment the mean L. monocytogenes <f>log10</f> CFU/g was 5.78. [Copyright &y& Elsevier]
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  Data: <i>Copyright of Meat Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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