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dc.date.accessioned2016-08-24T17:53:47Z
dc.date.available2016-08-24T17:53:47Z
dc.date.issued1996-06-18
dc.identifier.urihttp://hdl.handle.net/10919/72318
dc.description.abstractViral contamination in water samples is detected using a medium which includes both a substrate for .beta.-galactosidase and E. coli with elevated levels of intracellular .beta.-galactosidase. The substrate is chosen to undergo a detectable change (e.g., colorimetric, fluorometric, photometric, etc.) upon cleavage by .beta.-galactosidase. A water sample to be tested for viral contamination is added to the medium. If coliphages are present in the water sample, they will infect, multiply within, and subsequently lyse the E. coli host. Lysis of the E. coli will allow the release of the intracellular .beta.-galactosidase into the media, whereupon the enzyme will cleave the substrate for a detectable reaction. In one particular application, a colorimetric reagent that serves as a substrate for .beta.-galactosidase is dissolved or dispersed within an agar medium, and in another particular application, a colorimetric reagent that serves as a substrate for .beta.-galactosidase is dissolved or dispersed within a liquid medium. Color changes which result from lytic cell infection of the E. coli hosts are easily monitored by researchers or laboratory technicians. The presence of coliphages in a water sample is indicative of the presence of harmful human and animal enteric viruses in the water.
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherUnited States Patent and Trademark Office
dc.titleWater sample viral contamination detection system
dc.typePatent
dc.identifier.urlhttp://pimg-fpiw.uspto.gov/fdd/67/276/055/0.pdf
dc.date.accessed2016-08-19
dc.type.dcmitypeText
dc.contributor.assigneeCenter for Innovative Technology
dc.contributor.assigneeVirginia Polytechnic Institute and State University
dc.contributor.assigneeVirginia Tech Intellectual Properties, Inc.
dc.contributor.inventorIjzerman, M. Marian
dc.contributor.inventorHagedorn, Charles
dc.contributor.inventorFalkinham, III, Joseph O.
dc.date.filed1993-05-25
dc.identifier.applicationnumber8066865
dc.subject.uspc435/5
dc.subject.uspcother435/4
dc.subject.uspcother435/18
dc.subject.uspcother435/34
dc.subject.uspcother435/38
dc.subject.uspcother435/39
dc.subject.cpcC12Q1/34
dc.subject.cpcC12Q1/54
dc.subject.cpcG01N2333/924
dc.type.patenttypeutility
dc.identifier.patentnumber5527667


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