Effects of modified atmosphere packaging on an extended-spectrum beta-lactamase-producing Escherichia coli, the microflora, and shelf life of chicken meat.
Poult Sci 2020;
99:7004-7014. [PMID:
33248617 PMCID:
PMC7704958 DOI:
10.1016/j.psj.2020.09.021]
[Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 09/03/2020] [Accepted: 09/04/2020] [Indexed: 11/21/2022] Open
Abstract
The effects of modified atmosphere packaging on an extended-spectrum beta-lactamase-producing Escherichia coli strain and product quality characteristics of skinless chicken meat were determined. The samples were packed separately in air, 100% N2, and prefabricated gas mixtures with 75% O2 + 25% CO2 and 70% CO2 + 15% O2 + 15% N2 and incubated at 3°C for 7 d. To investigate the influence of the headspace ratio, samples were packed in identical trays to 600 g and 120 g. After 0, 2, 5, and 7 d of incubation, the samples were analyzed microbiologically and photometrically, and pH was measured. The results show that the development of the microorganisms depends on the atmosphere, with the 70% CO2 + 15% O2 + 15% N2 atmosphere having the highest development-inhibiting effect. This effect is increased with increased headspace. No significant effects on the pH and color of the samples were observed.
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