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The effect of storage temperature and inoculum level on the time of onset of `blown pack' spoilage

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Moschonas, G., Bolton, D. J., Sheridan, J. J. and McDowell, DA (2010) The effect of storage temperature and inoculum level on the time of onset of `blown pack' spoilage. JOURNAL OF APPLIED MICROBIOLOGY, 108 (2). pp. 532-539. [Journal article]

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URL: http://dx.doi.org/10.1111/j.1365-2672.2009.04455.x

DOI: 10.1111/j.1365-2672.2009.04455.x

Abstract

Aims: To examine the effect of storage temperature and inoculum level on the time of onset of 'blown pack' spoilage (BPS) caused by psychrotolerant bacteria in vacuum-packed (VP) meats.Methods and Results:  Gas-producing species and strains (n = 11), recovered in our laboratory or reported as associated with BPS, were inoculated onto beef or lamb meat pieces at final levels of <10, 10, 102 and 103 CFU cm22122, VP and stored at 22121·5, 1 or 4°C. Six strains produced observable amounts of gas within 42 days and a further four strains produced gas within 100 days. BPS was observed earliest in VP meats inoculated with Clostridium estertheticum ssp. estertheticum at all inoculum levels/storage temperature combinations examined. Storage temperature and inoculum level significantly affected (P < 0·001 and P < 0·05 respectively) the onset of BPS in all cases.Conclusions:  Controlling contamination levels and lowering the storage temperature delay the onset of BPS.Significance and Impact of the Study:  The study demonstrates the positive effects of low contamination2013low temperature as control interventions preventing/delaying BPS in VP chilled meats and identifies some of the contaminants most likely to cause BPS in chilled stored VP meat products.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Health Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Infection and Immunity/Microbiology
ID Code:10969
Deposited By:Professor David McDowell
Deposited On:30 Jan 2010 17:34
Last Modified:12 Mar 2013 14:04

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