Abstract
This study determined the ability of psychrotrophic Clostridium strains isolated from vacuum-packaged beefs and abattoir environments to cause ‘blown-pack’ spoilage of vacuum-packaged beef stored at 2 and 15°C. The influence of shrinking temperatures (83, 84 and 87°C) and vacuum pressure (6 and 9mbar) on the occurrence of such spoilage as well as the effects of simulated transportation (500km) on the integrity of packages was determined. At 15°C and 2°C, twelve and six strains caused ‘blown-pack’ spoilage, respectively. The combination of vacuum pressure (9mbar) combined with shrinking temperature (87°C) retarded the occurrence of spoilage. The simulated transportation under the experimental conditions did not affect the integrity of packages. More studies that assess the factors that may contribute for the occurrence of ‘blown-pack’ spoilage should be performed to avoid the occurrence of such spoilage during its shelf-life.
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