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Effects of UVC light‐emitting diodes on inactivation of Escherichia coli O157:H7 and quality attributes of fresh‐cut white pitaya

See The work aimed to evaluate the effects of ultraviolet-C light-emitting diodes (UVC-LEDs) at 275 nm against Escherichia coli O157:H7 on fresh-cut white pitaya. Besides, the influences of UVC-LED treatments on the quality of fresh-cut white pitaya were also investigated. The distance between the UVC-LEDs and the surface of the pitaya pieces was approximately 5 cm. The inactivation behavior of E. coli O157:H7 on fresh-cut pitaya began almost instantaneously and then tailed off as the fluence increased. The quantities of E. coli O157:H7 inoculated on fresh-cut white pitaya were reduced by 2.21 lg10 CFU/g after UVC-LED treatment at 1200 mJ/cm2 (33 min). The Weibull plus tail model was satisfactorily fitted…
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