Efficacy of cold atmospheric plasma for inactivation of viruses on raspberries

Velebit, Branko
Milojević, Lazar
Baltić, Tatjana
Grković, Nevena
Gummalla, Sanjay
Velebit, Marina
Škoko, Ines
Mojsova, Sandra
Putnik, Predrag

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Publication date

January 2022

DOI

10.1016/j.ifset.2022.103121

Publisher

Elsevier

Journal

Innovative Food Science & Emerging Technologies

Abstract

In this study, the effectiveness of cold atmospheric plasma (CAP) in inactivating murine norovirus (MNV/human norovirus surrogate) and hepatitis A virus (HAV) on aerosol-inoculated dark red Willamette raspberries was explored. Pulsed positive corona discharge system fed by synthetic air was used for the production of CAP. Raspberries were treated for 1, 3, 5, 7, and 10 min at 25 W. Application of CAP enabled a 4 log10 infectivity reduction in <5 min for MNV and approximately 10 min for HAV (from starting level of 6.91 and 7.84 log10 PFU/mL, respectively). Viral genome copies reduction of 3.18 log10 for MNV and 4.32 for HAV were found from starting level of 5.76 and 6.47 log10 gc/μL, respectively. CAP treatment did not result in significant ...