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Portable Hyperspectral Imaging Device for Surface Sanitation Verification in the Produce Industry

dc.contributor.advisorLo, Y. Martinen_US
dc.contributor.authorWiederoder, Michaelen_US
dc.description.abstractProduce processors must clean and sanitize surfaces before production to reduce the risk of foodborne illness. Current surface hygiene verification methods require direct surface sub-sampling at selected locations and a wait time. To augment these methods, a portable hyperspectral imaging device was developed to find potential contaminants in real-time and increase sub-sampling effectiveness. Analysis of hyperspectral fluorescence images showed that fresh-cut produce processing exudates in the regions of 460-540 and 670-680 nm are detectable from background materials, while select cleaning agents are not. The portable single operator imaging system includes a charge coupled device (CCD) camera, tunable optical filter, laptop, light emitting diodes (LED's) for fluorescence excitation, and a touchscreen display. Within a commercial plant, fluorescence imaging identified produce processing residuals following routine cleaning procedures that were not readily visible to the naked eye. These tests demonstrate the system's potential to enhance post-cleaning inspection, and helped improve routine cleaning procedures.en_US
dc.titlePortable Hyperspectral Imaging Device for Surface Sanitation Verification in the Produce Industryen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.contributor.departmentFood Scienceen_US
dc.subject.pqcontrolledFood scienceen_US
dc.subject.pqcontrolledAgriculture engineeringen_US
dc.subject.pquncontrolledFood Safetyen_US
dc.subject.pquncontrolledFresh-cut Produceen_US
dc.subject.pquncontrolledHyperspectral Imagingen_US

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