Effects of high pressure processing on infectivity of Toxoplasma gondii oocysts for mice

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dc.contributor.authorLindsay, David S.en
dc.contributor.authorCollins, Marina V.en
dc.contributor.authorJordan, C. N.en
dc.contributor.authorFlick, George J. Jr.en
dc.contributor.authorDubey, Jitender P.en
dc.contributor.departmentBiomedical Sciences and Pathobiologyen
dc.contributor.departmentFood Science and Technologyen
dc.date.accessed2014-06-16en
dc.date.accessioned2014-06-20T14:13:12Zen
dc.date.available2014-06-20T14:13:12Zen
dc.date.issued2005-06en
dc.description.abstractHigh pressure processing (HPP) has been shown to be an effective non-thermal method of eliminating non-spore forming bacteria from a variety of food products. The shelf-life of the products is extended and the sensory features of the food are not or only minimally effected by HPP. The present study examined the effects of HPP using a commercial scale unit on the viability of Toxoplasma gondii oocysts. Oocysts were exposed from 100 to 550 MPa for I min in the HPP unit and then HPP treated oocysts were orally fed to groups of mice. Oocysts treated with 550 MPa or less did not develop structural alterations when viewed with light microscopy. Oocysts treated with 550 MPa, 480 MPa, 400 Mpa, or 340 MPa were tendered noninfectious for mice. Mice fed oocysts treated with no or 100 to 270 MPa became infected and most developed acute toxoplasmosis and were killed or died 7 to 10 days after infection. These results suggest that HPP technology may be useful in the removal of T. gondii oocysts from food products.en
dc.description.sponsorshipNOAA Office of Sea Granten
dc.description.sponsorshipU.S. Department of Commerce, under Grant No. NA56RG0141en
dc.description.sponsorshipVirginia Graduate Marine Science Consortiumen
dc.description.sponsorshipVirginia Sea Grant College Programen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationDavid S. Lindsay, Marina V. Collins, Carly N. Jordan, George J. Flick, and J. P. Dubey (2005). "Effects of High Pressure Processing on Infectivity of Toxoplasma gondii Oocysts for Mice," Journal of Parasitology, Vol. 91, No. 3, pp. 699-701. doi: http://dx.doi.org/10.1645/GE-425Ren
dc.identifier.doihttps://doi.org/10.1645/ge-425ren
dc.identifier.issn0022-3395en
dc.identifier.urihttp://hdl.handle.net/10919/49040en
dc.identifier.urlhttp://www.bioone.org/doi/abs/10.1645/GE-425Ren
dc.language.isoenen
dc.publisherAmerican Society of Parasitologyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjecthigh-hydrostatic-pressureen
dc.subjectunited-statesen
dc.subjectcongenital toxoplasmosisen
dc.subjecttrichinella-spiralisen
dc.subjectanisakis-simplexen
dc.subjectmicroorganismsen
dc.subjectparasitologyen
dc.titleEffects of high pressure processing on infectivity of Toxoplasma gondii oocysts for miceen
dc.title.serialJournal of Parasitologyen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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