首页|Evaluation of the persistence of SARS-CoV-2 (ATCC (R) VR-1986HK (TM)) on two different food contact materials: flow pack polyethylene and polystyrene food trays

Evaluation of the persistence of SARS-CoV-2 (ATCC (R) VR-1986HK (TM)) on two different food contact materials: flow pack polyethylene and polystyrene food trays

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  • NSTL
  • Elsevier
Even though SARS-CoV-2's primary transmission pathway is person-to-person, the role played by surfaces and food contact materials in carrying viral RNA should be further explored. For this purpose, the study aimed to investigate the persistence of SARS-CoV-2 using the strain ATCC (R) VR-1986HKTM on flow pack polyethylene (FPP) and polystyrene food trays (PFT). Samples of FPP and PFT were contaminated with heat-inactivated SARSCoV-2 and were incubated at a temperature of 24 +/- 1 degrees C and at controlled relative humidity (RH 65%). The experimental design included analyses at the time 0, 3, 6, 12, 24, 36, 48 and after every 24 h until the viral RNA was no longer detectable. The results showed a significant decrease (P < 0.001) in viral copy numbers on PFT within 3 h (24% reduction) and, at 72 h, the viral RNA had fallen below the limit of detection. Regarding the FPP, it was necessary to wait 24 h for a significant decrease (P = 0.015) in the viral load (14% reduction), while the detection threshold was reached at 96 h. These findings showed that the viral RNA persists longer on flow pack polyethylene samples than on polystyrene food trays, thus highlighting the importance of material characteristics in the persistence of SARS-CoV-2.

COVID-19Food packagingFomiteSurface-mediated transmissionViral RNA detection

Castrica, Marta、Balzaretti, Claudia、Miraglia, Dino、Lorusso, Patrizio、Pandiscia, Annamaria、Tantillo, Giuseppina、Massacci, Francesca Romana、Terio, Valentina

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Univ Milan, Dept Hlth Anim Sci & Food Safety Carlo Cantoni, Via Univ 6, I-90026 Milan, Italy

Univ Perugia, Dept Vet Med, Via San Costanzo 4, I-06126 Perugia, Italy

Univ Bari, Dept Vet Med, Str Prov Casamassima Km 3, I-70010 Bari, Italy

Univ Bari, Dept Interdisciplinary Med, Piazza Giulio Cesare 11, I-70124 Bari, Italy

Ist Zooprofilatt Sperimentale Umbria & Marche Tog, Via Gaetano Salvemini 1, I-06126 Perugia, Italy

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2021

10.1016/j.lwt.2021.111606

LWT-Food Science & Technology

LWT-Food Science & Technology

ISSN：0023-6438
年,卷(期)：2021.146
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