ATTACHMENT, GROWTH AND PERSISTENCE OF CRONOBACTER ON GRANULAR ACTIVATED CARBON FILTERS

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dc.contributor.advisorBuchanan, Robert Len_US
dc.contributor.authorLu, Junchaoen_US
dc.contributor.departmentFood Scienceen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2016-09-07T05:31:48Z
dc.date.available2016-09-07T05:31:48Z
dc.date.issued2016en_US
dc.description.abstractSeveral Cronobacter outbreaks have implicated contaminated drinking water. This study assessed the impact of granular activated carbon (GAC) on the microbial quality of the water produced. A simulated water filter system was installed by filling plastic columns with sterile GAC, followed by sterile water with a dilute nutrient flowing through the column at a steady rate. Carbon columns were inoculated with Cronobacter on the surface, and the effluent monitored for Cronobacter levels. During a second phase, commercial faucet filters were distributed to households for 4-month use. Used filters were backwashed with sterile peptone water, and analyzed for Cronobacter, total aerobic plate count, coliform bacteria and Enterobacteriaceae. Cronobacter colonized the simulated GAC and grew when provided minimal levels of nutrients. Backwashed used filters used in home settings yielded presumptive Escherichia coli, Pseudomonas and other waterborne bacteria. Presumptive Cronobacter strains were identified as negative through biochemical and genetic test.en_US
dc.identifierhttps://doi.org/10.13016/M2SN57
dc.identifier.urihttp://hdl.handle.net/1903/18637
dc.language.isoenen_US
dc.subject.pqcontrolledFood scienceen_US
dc.subject.pqcontrolledMicrobiologyen_US
dc.subject.pquncontrolledCronobacteren_US
dc.subject.pquncontrolledgranular activated carbonen_US
dc.subject.pquncontrolledwater filteren_US
dc.titleATTACHMENT, GROWTH AND PERSISTENCE OF CRONOBACTER ON GRANULAR ACTIVATED CARBON FILTERSen_US
dc.typeThesisen_US

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