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Antifungal activity of poly(ε‐caprolactone) nanoparticles incorporated with Eucalyptus essential oils against Hemileia vastatrix

Caetano, A.R.S. ; Cardoso, M.G. ; Resende, M.L.V. ; Chalfuon, S.M. ; Martins, M.A. ; Gomes, H.G. ; Andrade, M.E.R. ; Brandão, R.M. ; Campolina, G.A. ; Nelson, D.L. ; Oliveira, J.E.

Letters in applied microbiology, 2022-10, Vol.75 (4), p.1028-1041 [Periódico revisado por pares]

Oxford: Oxford University Press

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  • Título:
    Antifungal activity of poly(ε‐caprolactone) nanoparticles incorporated with Eucalyptus essential oils against Hemileia vastatrix
  • Autor: Caetano, A.R.S. ; Cardoso, M.G. ; Resende, M.L.V. ; Chalfuon, S.M. ; Martins, M.A. ; Gomes, H.G. ; Andrade, M.E.R. ; Brandão, R.M. ; Campolina, G.A. ; Nelson, D.L. ; Oliveira, J.E.
  • Assuntos: Antifungal activity ; Biodegradability ; Biodegradation ; Citronellal ; Coffea ; Coffee ; coffee tree rust ; Contamination ; Essential oils ; Eucalyptus ; Eucalyptus camaldulensis ; Eucalyptus citriodora ; Eucalyptus grandis ; Fourier transforms ; Fungi ; Fungicides ; Hemileia vastatrix ; Infrared analysis ; microbiological activity ; Nanoparticles ; Natural products ; Oils & fats ; polymeric nanoparticles ; Rust fungi ; α-Pinene
  • É parte de: Letters in applied microbiology, 2022-10, Vol.75 (4), p.1028-1041
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: Coffee (Coffea L.) is one of the main crops produced globally. Its contamination by the fungus Hemileia vastatrix Berkeley and Broome has been economically detrimental for producers. The objective of this work was to extract and characterize the essential oils from Eucalyptus citriodora Hook, Eucalyptus camaldulensis Dehn and Eucalyptus grandis Hill ex Maiden, produce and characterize nanoparticles containing these essential oils and evaluate the in vivo and in vitro antifungal activity of free and nanoencapsulated essential oils. The principal constituent of the essential oil from E. citriodora was citronellal; that from E. grandis was α‐pinene; and that from E. camaldulensis was 1,8‐cineol. The in vitro antifungal activity against the fungus H. vastatrix was 100% at a concentration of 1000 μl l−1 for all the oils and nanoparticles containing these natural products. The sizes of the nanoparticles produced with the essential oils from E. citriodora, E. camaldulensis and E. grandis were 402·13 nm, 275·33 nm and 328·5 nm, respectively, with surface charges of −11·8 mV, −9·24 mV and − 6·76 mV, respectively. Fourier transform infrared analyses proved that the encapsulation of essential oils occurred in the polymeric matrix of poly(ε‐caprolactone). The incorporation of essential oils into biodegradable poly(ε‐caprolactone) nanoparticles increased their efficiency as biofungicides in the fight against coffee rust, decreasing the severity of the disease by up to 90·75% after treatment with the nanoparticles containing the essential oil from E. grandis. Significance and Impact of the Study: The fungus Hemileia vastatrix Berkeley and Broome is one of the main vectors responsible for the decrease in coffee production by causing economic losses to the producers of this commodity. This work details the potential for the application of biodegradable poly(ε‐caprolactone) nanoparticles containing essential oils from Eucalyptus to combat the fungus that causes coffee rust (Hemileia vastatrix). Promising results were found in this work, which indicate the feasibility of applying nanostructured systems for controlled release of essential oils to combat phytopathogenic fungi in coffee cultures.
  • Editor: Oxford: Oxford University Press
  • Idioma: Inglês
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