Evaluation of Antiphytoviral and Antibacterial Activity of Essential Oil and Hydrosol Extracts from Five Veronica Species

Marija Nazlić, Valerija Dunkić (), Mia Dželalija, Ana Maravić, Mihaela Mandić, Siniša Srečec, Ivana Vrca, Elma Vuko and Dario Kremer
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Marija Nazlić: Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia
Valerija Dunkić: Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia
Mia Dželalija: Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia
Ana Maravić: Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia
Mihaela Mandić: Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia
Siniša Srečec: Department of Plant Production, Križevci University of Applied Sciences, Milislava Demerca 1, 48260 Križevci, Croatia
Ivana Vrca: Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia
Elma Vuko: Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia
Dario Kremer: Faculty of Pharmacy and Biochemistry, University of Zagreb, Ante Kovačića 1, 10000 Zagreb, Croatia

Agriculture, 2023, vol. 13, issue 8, 1-13

Abstract: Agricultural production without pollution is possible using bioactive plant compounds, which include essential oils as important substances of plant origin. The aim of this study was to evaluate the antiphytoviral and antibacterial potentials of lipid (essential oil, EO) and water (hydrosol, HY) extracts from five Veronica species (Plantaginaceae) obtained by Clevenger hydrodistillation (HD) and microwave-assisted extraction (MAE), with analysis by gas chromatography coupled with mass spectrometry. The antiphytoviral activities of both extracts were tested on local host plants infected with tobacco mosaic virus (TMV). The antibacterial potential was tested against ten strains of opportunistic pathogens using the broth microdilution test. Species V. chamaedrys EO-MAE extract, V. arvensis EO from both extractions and V. montana, V. serpyllifolia , and V. persica EO-HD extracts were more effective in inhibiting TMV infection. Furthermore, HY- HD extracts of V. arvensis , V. chamaedrys and V. persica showed significant antiphytoviral activity. HY fractions had no effect on bacterial growth, regardless of the Veronica species tested, likely due to the fact that the maximum concentrations of the HY fractions tested in this study were low (1.83 and 2.91 mg/mL). EOs showed significant antibacterial activity independent of the extraction method. Notably, V. chamaedrys EO-MAE fraction, showed significantly better activity against Listeria monocytogenes and Enterococcus faecalis . Also, the EO-HD fraction of V. arvensis showed slightly better antibacterial activity. By combining extracts and using different extraction methods, valuable bioproducts can be obtained from the investigated Veronica species for safe use in agricultural production and food conservation.

Keywords: Veronica; essential oil; hydrosol; antiphytoviral activity; tobacco mosaic virus; antibacterial activity (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
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