engleski

Antifungal activity of selenium nanoparticles modified with polyphenolic-rich olive pomace extract

Antifungal activity of selenium nanoparticles (SeNPs) has been reported previously [1, 2]. In this study, synthetic coatings and polyphenols derived from olive pomace extract (OPE) were used in the synthesis of SeNPs, which antifungal activity was evaluated in vitro. Four different types of SeNPs were synthesized – polyvinylpyrrolidone stabilized (PVP SeNPs), Polysorbate stabilized (PS SeNPs), polyvinylpyrrolidone stabilized and OPE modified (fPVP SeNPs) and Polysorbate stabilized and OPE modified SeNPs (fPS SeNPs). The antifungal activity was evaluated on common phytopathogenic fungi - Botrytis cinerea, Macrophomina phaseolina, Sclerotinia sclerotiorum and Fusarium graminearum. Control groups were non-treated fungi while sodium selenite was used as the reference compound known to exhibit antimicrobial activity. Taken together, the effects were dependent on the fungal species and the form of selenium applied. fPVP SeNPs showed stronger antifungal activity compared to PVP SeNPs against Botrytis cinerea, Macrophomina phaseolina and Fusarium graminearum, while fPS SeNPs showed improved antifungal activity compared to PS SeNPs against Sclerotinia sclerotiorum and Fusarium graminearum. The results indicate that surface modification using OPE can enhance the antifungal activity of SeNPs. In addition, this study provides new evidence of the effectiveness and usage of possible new “green pesticides'' in agricultural production. [1] K. Vrandečić et. al., Pest Manag. Sci. 76 (2020) 2021–2029. [2] A.-W. Ismail et al., Br. Biotechnol. J. 12 (2016) 1–11.

Antifungal activity, selenium nanoaprticles, in vitro

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