Long Term Virucidal Activity of Rosin Soap on Surfaces
Bamford, C. G. G.; Bell, S. H.; Fairley, D. J.; Kettunen, H.; Vuorenmaa, J.; Orte, J.; McGrath, J.
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Microbiocidal products for decontaminating both animate and inanimate surfaces that may act as vectors for disease transmission are a well-established method for inactivating viruses of clinical significance. There are a wide variety of such microbiocidal products that can be purchased commercially, many with different active ingredients. We have recently shown that Rosin soap (derived from Tall Oil that has been produced by trees) is a highly effective virucidal product against enveloped viruses like influenza A virus and SARS-CoV-2 when tested in solution. Here we further demonstrate that Rosin soap retains its virucidal activity against influenza A virus and SARS-CoV-2 when applied to surfaces, such as plastic, glass and steel, either before or after virus inoculation. The virucidal activity extended out to seven days post administration. Together, our results show the potential for Rosin soap-based disinfectants to be used as a surface coating to protect against clinically relevant enveloped viruses, such as influenza viruses and coronaviruses.
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