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Free-Living Protozoa Found In Meat-Cutting Plants

Date:
September 30, 2008
Source:
American Society for Microbiology
Summary:
A first time survey of free-living protozoa in meat-cutting plants showed high diversity rates of various species including those that could harbor food-borne pathogens say researchers from Belgium.

A first time survey of free-living protozoa in meat-cutting plants showed high diversity rates of various species including those that could harbor food-borne pathogens say researchers from Ghent University, Belgium.

Protozoa are unicellular microorganisms that feed on bacteria. Sometimes the bacteria survive and replicate within the protozoa. Although bacterial presence in meat-processing environments has been previously examined, no studies of protozoan communities in these environments and their role in food contamination have been conducted.

In the study researchers used a series of methods to screen for protozoa in five meat-cutting plants and found communities of amoebae, ciliates, and flagellates to be present in all. Protozoa were detected in floor drains, standing water on the floor, soiled bars of cutting tables, plastic pallets and out-of-use hot water knife sanitizers. In addition, protozoa were identified on surfaces which come into direct contact with meat, such as conveyor belts, surfaces of cutting tables, and needles of meat tenderizers.

Cultures were then refrigerated for seven days, after which protozoa were still detected in half of the samples. Through microscopic observations researchers identified up to 61 morphospecies.

"This survey showed that there is high protozoan species richness in meat-cutting plants and that the species included species related to known hosts of food-borne pathogens," say the researchers.


Story Source:

The above story is based on materials provided by American Society for Microbiology. Note: Materials may be edited for content and length.


Journal Reference:

  1. Vaerewijck et al. Microscopic and Molecular Studies of the Diversity of Free-Living Protozoa in Meat-Cutting Plants. Applied and Environmental Microbiology, 2008; 74 (18): 5741 DOI: 10.1128/AEM.00980-08

Cite This Page:

American Society for Microbiology. "Free-Living Protozoa Found In Meat-Cutting Plants." ScienceDaily. ScienceDaily, 30 September 2008. <www.sciencedaily.com/releases/2008/09/080926162142.htm>.
American Society for Microbiology. (2008, September 30). Free-Living Protozoa Found In Meat-Cutting Plants. ScienceDaily. Retrieved April 18, 2014 from www.sciencedaily.com/releases/2008/09/080926162142.htm
American Society for Microbiology. "Free-Living Protozoa Found In Meat-Cutting Plants." ScienceDaily. www.sciencedaily.com/releases/2008/09/080926162142.htm (accessed April 18, 2014).

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