The effects of lighting type on fresh pork color were studied by displaying chops under delux cool white (DCW), cool white, Surlyn® coated (CWSC), or warm white (WW) fluorescent or cool flood (CF) incandescent lights. Initial color desirability was assessed. Hunter colorimeter values and percentage myoglobin (Mb), oxymyoglobin (OMb) aand metmyoglobin (MMb) were determined over 5 days of display. Light types CF and DCW provided the most desirable color rendition. Chops displayed under CF lights became darker, had less percentage OMb and greater Mb, and likely had greater microbial growth than other chops due to an increase in chop temperature. It appears that CF and DCW lights provide the most desirable color and that precautions against temperature elevation are needed.
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Calkins et al. (1986) studied this question.
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