What question did this study set out to answer?

To evaluate the growth and survival of Listeria monocytogenes and background spoilage bacteria on beef fillets under different packaging environments, film permeabilities, and oregano essential oil supplementation at 5 °C.

December 1, 2000Journal of Applied MicrobiologyOpen Access

Behaviour of Listeria monocytogenes and autochthonous flora on meat stored under aerobic, vacuum and modified atmosphere packaging conditions with or without the presence of oregano essential oil at 5 oC

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To evaluate the growth and survival of Listeria monocytogenes and background spoilage bacteria on beef fillets under different packaging environments, film permeabilities, and oregano essential oil supplementation at 5 °C.
Inoculated sterile and naturally contaminated beef fillets stored under aerobic, vacuum packaging (VP), and modified atmosphere packaging (MAP: 40% CO2, 30% O2, 30% N2) at 5 °C.
Tested high-permeability versus low-permeability packaging films, with and without the addition of 0.8% (v/w) oregano essential oil.
Aerobic storage and high-permeability MAP/VP allowed pseudomonads to dominate, which accelerated the growth of L. monocytogenes earlier than observed on sterile meat.
Low-permeability film under MAP/VP favored Brochothrix thermosphacta dominance and completely prevented L. monocytogenes growth on both sterile and naturally contaminated fillets.
Supplementation with 0.8% (v/w) oregano essential oil induced an immediate 2 to 3 log10 reduction in total bacterial counts, restricting aerobic growth and driving pathogen inactivation under MAP and VP regardless of film permeability.

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Implication

Laboratory study demonstrates that oregano essential oil and low-permeability packaging suppress Listeria monocytogenes on refrigerated beef, indicating effective combined preservation strategies.

Cite This Study

Tsigarida et al. (2000) studied this question.

synapsesocial.com/papers/6a70b07075498292b70a275c https://doi.org/10.1046/j.1365-2672.2000.01170.x

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Implication

Laboratory study demonstrates that oregano essential oil and low-permeability packaging suppress Listeria monocytogenes on refrigerated beef, indicating effective combined preservation strategies.

Behaviour of Listeria monocytogenes and autochthonous flora on meat stored under aerobic, vacuum and modified atmosphere packaging conditions with or without the presence of oregano essential oil at 5 oC

Key Points

Discussion

Implication

Cite This Study

Behaviour of Listeria monocytogenes and autochthonous flora on meat stored under aerobic, vacuum and modified atmosphere packaging conditions with or without the presence of oregano essential oil at 5 oC

Key Points

Discussion

Implication

Cite This Study

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