| Autor: |
Polen B; Department of Food Science, University of Tennessee, Knoxville, TN 37996, USA., Pendyala B; Department of Food and Animal Sciences, Tennessee State University, Nashville, TN 37209, USA., Patras A; Department of Food and Animal Sciences, Tennessee State University, Nashville, TN 37209, USA., D'Souza DH; Department of Food Science, University of Tennessee, Knoxville, TN 37996, USA. |
| Jazyk: |
angličtina |
| Zdroj: |
Foods (Basel, Switzerland) [Foods] 2024 Sep 12; Vol. 13 (18). Date of Electronic Publication: 2024 Sep 12. |
| DOI: |
10.3390/foods13182892 |
| Abstrakt: |
Food contact surfaces can harbor and transmit pathogens leading to outbreaks. Decontamination strategies that are user- and environmentally-friendly without toxic by-product formation are needed. Novel UV-C light-emitting diode (LED) technologies are being explored to deliver the required dose to inactivate viruses in food-processing environments. The objective of this study was to compare the effects of 279 nm UV-C LED to 254 nm UV-C against hepatitis A virus (HAV) and feline calicivirus (FCV, a cultivable human norovirus surrogate) on stainless-steel, ceramic, and glass surfaces. Viruses were surface spread on sterile stainless-steel or ceramic coupons (100 μL on 2 × 2 cm 2 ), or glass discs (50 μL on 1 × 1 cm 2 ), air-dried, and UV-C-treated for up to 3.75 min (surface dose = 0-49.2 mJ/cm 2 for HAV and 0-24.6 mJ/cm 2 for FCV). Each triplicate treatment was assayed in duplicate, and data were statistically analyzed. The D 10 -values for HAV treated with UV-C at 254 nm on stainless-steel, ceramic, and glass were 9.48 ± 0.34, 14.53 ± 2.52, and 6.91 ± 1.93 mJ/cm 2 , while with UV-C LED at 279 nm were 19.53 ± 2.45, 26.05 ± 0.60, and 8.77 ± 2.08 mJ/cm 2 , respectively. The D 10 -values for FCV treated with UV-C at 254 nm on stainless-steel, ceramic, and glass were 3.65 ± 0.06, 6.25 ± 1.90, and 4.69 ± 0.03 mJ/cm 2 , while with UV-C LED at 279 nm were 7.097 ± 2.11, 8.31 ± 2.12, and 7.88 ± 0.86 mJ/cm 2 , respectively. Higher 279 nm UV-C doses were needed to inactivate HAV and FCV compared to 254 nm UV-C on the tested surfaces. Novel UV-C LED systems using appropriate doses show promise to inactivate foodborne viruses on food contact surfaces. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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