Chemical Composition, Antioxidant, Antifungal and Herbicidal Activities of Essential Oils from Three Thymus Species

Authors : Ayşe USANMAZ BOZHÜYÜK, Şaban KORDALI

Pages : 424-433

Doi:10.47115/bsagriculture.1117312

View : 16 | Download : 8

Publication Date : 2022-10-01

Article Type : Research Paper

Abstract :The current study aimed to research the chemical composition, antioxidant, herbicidal and antifungal effect three essential oils, as obtained from Thymus canoviridis Jalas., Thymus eriocalyx insert ignore into journalissuearticles values(Ronni.); Jalas. and Thymus fallax Fisch. et C.A. Mey. Antioxidant capacities of essential oils were determined by 1.1dipheny1-2-picrylhydrazyl insert ignore into journalissuearticles values(DPPH); method. The antifungal potential was tested in-vitro against Fusarium equiseti insert ignore into journalissuearticles values(Corda); Sacc., Fusarium graminearum Schwab., Fusarium moniliforme J. Sheld and Fusarium oxysporum Schlec. Bioherbicidal effect was studied in-vivo and in-vitro against weed seeds of Amaranthus retroflexus L., Convolvulus arvensis L. and Chenopodium album L. Essential oils were assayed in laboratory three concentrations insert ignore into journalissuearticles values(5, 10 and 20 µL/petri); and one insert ignore into journalissuearticles values(20 µL/pot); concentration in the greenhouse. The chemical composition of essential oils was analyzed by insert ignore into journalissuearticles values(GC); and insert ignore into journalissuearticles values(GC/MS);. The major constituents were p-cymene, 1,8-cineole and γ-terpinene. As a result of the antioxidant study, it was determined that Thymus essential oils had remarkable antioxidant activity. On the other hand, oils decreased mycelial growth of pathogens at different rates due to increasing doses and inhibited 9.33-100% in-vitro conditions. In the bioherbicidal study assays showed that tested essential oils had inhibitory effects on the seed germination and seedling growth of weeds. The study concludes that Thymus essential oils might has the potential use as bioherbicide and biofungicide can constitute an alternative process of weed control and fungus.
Keywords : Antioxidant effect, Antifungal effect, Bioherbicidal effect, Essential oil, Thymus