Recoverability of Listeria monocytogenes after coculture with Tetrahymena pyriformis

Bactivory by protozoa is a major factor that limits the number of bacteria in nature and may control the presence of Listeria monocytogenes. The effectiveness of Tetrahymena pyriformis destruction of L. monocytogenes was measured. Within 1 hr, 35–40 T. pyriformis cells ingested an average of 1,219 C...

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Bibliographic Details
Published in:Journal of food safety 2020-06, Vol.40 (3), p.n/a
Main Authors: Meinersmann, Richard J., Berrang, Mark E., Rigsby, Luanne L.
Format: Article
Language:English
Subjects:
Bacteria
Cell culture
Food irradiation
Food processing
Food safety
Gentamicin
Listeria
Listeria monocytogenes
Protozoa
Recoverability
Swimming
Tetrahymena pyriformis
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Summary:Bactivory by protozoa is a major factor that limits the number of bacteria in nature and may control the presence of Listeria monocytogenes. The effectiveness of Tetrahymena pyriformis destruction of L. monocytogenes was measured. Within 1 hr, 35–40 T. pyriformis cells ingested an average of 1,219 CFU of L. monocytogenes. Gentamicin was then added to kill un‐ingested Listeria. In 24 hr, the recoverable bacteria were reduced at an exponential rate to undetectable levels (
ISSN:0149-6085
1745-4565
DOI:10.1111/jfs.12778