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dc.contributor.authorByrne, Robert Duaneen_US
dc.date.accessioned2012-11-21en_US
dc.date.accessioned2014-03-14T21:50:25Z
dc.date.available2012-11-21en_US
dc.date.available2014-03-14T21:50:25Z
dc.date.issued1989-12-05en_US
dc.date.submitted2012-11-21en_US
dc.identifier.otheretd-11212012-040107en_US
dc.identifier.urihttp://hdl.handle.net/10919/45943
dc.description.abstract

A study was conducted to investigate the use of bacterial numbers and metabolites for their Value in predicting potential shelf-life of pasteurized fluid milk. The study consisted of two phases. In the first phase, chemical inhibitors were evaluated for their ability to allow growth of gram-negative psychrotrophic bacteria while inhibiting growth of gram-positive organisms. Crystal violet, benzalkonium chloride, a mixture of crystal violet and benzalkonium chloride, and alkylaryl sulfonate were tested. These were incubated with milk samples separately inoculated with gram-negative and gram-positive bacteria, at 2l°C for 18 hours. Alkylaryl sulfonate allowed growth of gram-positive organisms. Crystal violet inhibited gram-positive organisms but was not as effective as the mixture of crystal violet and benzalkonium chloride, The inhibitor of choice was benzalkonium chloride as it inhibited growth of all gram-positive organisms tested and allowed growth of the gram-negative psychrotrophic organisms.

en_US
dc.format.mediumBTDen_US
dc.publisherVirginia Techen_US
dc.relation.haspartLD5655.V855_1989.B976.pdfen_US
dc.subjectMilken_US
dc.subject.lccLD5655.V855 1989.B976en_US
dc.titleAssessment of dairy product quality by selective incubation and rapid techniquesen_US
dc.typethesisen_US
dc.contributor.departmentFood Science and Technologyen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
dc.contributor.committeechairBishop, J. Russellen_US
dc.contributor.committeememberEigel, William N. IIIen_US
dc.contributor.committeememberJones, Gerald M.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11212012-040107/en_US


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