Inactivation Methods for Human Coronavirus 229E on Various Food-contact Surfaces and Foods

Overview

Journal Food Control

Date 2022 Jul 25

PMID 35875338

Authors

Eun Seo Choi

Sangha Han

Jeong Won Son

Gyeong Bae Song

Sang-Do Ha

Affiliations

Soon will be listed here.

Abstract

Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), the cause of the COVID-19 outbreaks, is transmitted by respiratory droplets and has become a life-threatening viral pandemic worldwide. The aim of this study was to evaluate the effects of different chemical (chlorine dioxide [ClO] and peroxyacetic acid [PAA]) and physical (ultraviolet [UV]-C irradiation) inactivation methods on various food-contact surfaces (stainless steel [SS] and polypropylene [PP]) and foods (lettuce, chicken breast, and salmon) contaminated with human coronavirus 229E (HCoV-229E). Treatments with the maximum concentration of ClO (500 ppm) and PAA (200 ppm) for 5 min achieved >99.9% inactivation on SS and PP. At 200 ppm ClO for 1 min on lettuce, chicken breast, and salmon, the HCoV-229E titers were 1.19, 3.54, and 3.97 log TCID/mL, respectively. Exposure (5 min) to 80 ppm PAA achieved 1.68 log reduction on lettuce, and 2.03 and 1.43 log reductions on chicken breast and salmon, respectively, treated with 1500 ppm PAA. In the carrier tests, HCoV-229E titers on food-contact surfaces were significantly decreased (p < 0.05) with increased doses of UV-C (060 mJ/cm) and not detected at the maximum UV-C dose (Detection limit: 1.0 log TCID/coupon). The UV-C dose of 900 mJ/cm proved more effective on chicken breast (>2 log reduction) than on lettuce and salmon (>1 log reduction). However, there were no quality changes (p > 0.05) in food samples after inactivation treatments except the maximum PAA concentration (5 min) and the UV-C dose (1800 mJ/cm).

Citing Articles

Investigating the microbial inactivation effect of low temperature high pressure carbon dioxide and its application in frozen prawn ().

Lian Z, Yang D, Wang Y, Zhao L, Rao L, Liao X Food Control. 2022; 145:109401.

PMID: 36186659 PMC: 9512252. DOI: 10.1016/j.foodcont.2022.109401.

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