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Sci Rep . Evaluation of the anti-SARS-CoV-2 properties of essential oils and aromatic extracts

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  • Sci Rep . Evaluation of the anti-SARS-CoV-2 properties of essential oils and aromatic extracts


    Sci Rep


    . 2022 Aug 20;12(1):14230.
    doi: 10.1038/s41598-022-18676-w.
    Evaluation of the anti-SARS-CoV-2 properties of essential oils and aromatic extracts


    Daniel Jan Strub 1 2 , Michał Talma 3 , Maria Strub 4 , Wioletta Rut 5 , Mikolaj Zmudzinski 5 , Władysław Brud 6 , Johan Neyts 7 , Laura Vangeel 7 , Linlin Zhang 8 , Xinyuanyuan Sun 8 , Zongyang Lv 9 10 , Digant Nayak 9 10 , Shaun K Olsen 9 10 , Rolf Hilgenfeld 8 11 , Dirk Jochmans 7 , Marcin Drąg 12



    Affiliations

    Abstract

    Essential oils and aromatic extracts (oleoresins, absolutes, concretes, resinoids) are often used as food flavorings and constituents of fragrance compositions. The flavor and fragrance industry observed significant growth in the sales of some natural materials during the COVID-19 outbreak. Some companies worldwide are making false claims regarding the effectiveness of their essential oils or blends (or indirectly point toward this conclusion) against coronaviruses, even though the available data on the activity of plant materials against highly pathogenic human coronaviruses are very scarce. Our exploratory study aimed to develop pioneering knowledge and provide the first experimental results on the inhibitory properties of hundreds of flavor and fragrance materials against SARS-CoV-2 main and papain-like proteases and the antiviral potential of the most active protease inhibitors. As essential oils are volatile products, they could provide an interesting therapeutic strategy for subsidiary inhalation in the long term.


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