The Antimicrobial Effect of Benzoic Acid or Propyl Paraben Treatment combined with UV-A Light on Escherichia Coli O157:H7

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dc.contributor.advisorTikekar, Rohan Ven_US
dc.contributor.authorDing, Qiaoen_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.accessioned2017-06-22T06:33:20Z
dc.date.available2017-06-22T06:33:20Z
dc.date.issued2017en_US
dc.description.abstractThe antimicrobial effect of the combined UV-A light and benzoic acid (BA) or propyl paraben (PP) treatment was evaluated using Escherichia Coli O157:H7. Factors affecting the efficacy of antimicrobial treatments were examined through various microbial and biochemical approaches. A combined 15 mM BA and UV-A treatment exhibited more than 5 log (CFU/mL) reduction in antimicrobial activity via production of reactive oxygen species (ROS), membrane damage and decreasing intracellular pH. Similarly, the combined 3 mM PP and UV-A treatment also caused more than 5 log reduction contributed by membrane damage. UV-A and BA treatment was also found to be effective in a scaled-up, continuous system, while a combined UV-A and PP was able to significantly reduce the likelihood of cross-contamination in simulated fresh produce washing study. The findings from this study have revealed the potential for the combined treatments that help to improve the safety and quality of fresh produce.en_US
dc.identifierhttps://doi.org/10.13016/M27P3V
dc.identifier.urihttp://hdl.handle.net/1903/19521
dc.language.isoenen_US
dc.subject.pqcontrolledFood scienceen_US
dc.subject.pquncontrolledBenzoic Aciden_US
dc.subject.pquncontrolledFood Safetyen_US
dc.subject.pquncontrolledIndustry Applicationen_US
dc.subject.pquncontrolledNon-thermal Treatmenten_US
dc.subject.pquncontrolledPropyl Parabenen_US
dc.titleThe Antimicrobial Effect of Benzoic Acid or Propyl Paraben Treatment combined with UV-A Light on Escherichia Coli O157:H7en_US
dc.typeThesisen_US

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