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Antimicrobial activity of rosemary, eucalyptus and propolis individual and mixed extracts

2022Documento de conferência Acesso aberto
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dc.contributor.authorAbir, Tebai
dc.contributor.authorOliveira, Izamara
dc.contributor.authorFalcão, Soraia
dc.contributor.authorBen Rejeb, Ines
dc.contributor.authorBarros, Lillian
dc.contributor.authorHeleno, Sandrina A.
dc.date.accessioned2023-03-16T16:47:25Z
dc.date.available2023-03-16T16:47:25Z
dc.date.issued2022
dc.description.abstractPreservative-free meals and the use of natural products as natural alternatives are becoming more popular as consumers become more aware of the potential health problems associated with artificial food preservatives. The current study focused on exploring the potential of plant extracts (rosemary and eucalyptus) and propolis, or their mixtures, to develop a highly bioactive formulation. Extracts were prepared individually and mixtures of eucalyptus/propolis, eucalyptus/rosemary, and rosemary/propolis using hydroethanolic extracts (80% ethanol) in different ratios of 50:50, 60:40, and 40:60, respectively., were also prepared. The selected matrices were prepared by two different maceration processes: i) 1 g of the sample was macerated in 30 mL of 80% hydroethanolic solution using magnetic stirring; ii) 1 g of sample in 10 mL of hydroethanolic solution was macerated in a water bath at 70°C, this being, the recommended protocol for extraction of phenolic compounds from propolis [1]. The extracts were further analyzed for their antimicrobial ability by microdilution method using pathogenic microorganisms. The individual extracts of rosemary and eucalyptus showed remarkably strong antibacterial activity against most bacterial strains, often equivalent to that obtained with the common antibiotic’s streptomycin, methicillin, and ampicillin. Both mixtures, eucalyptus/rosemary (60:40) collected from maceration by magnetic stirring and eucalyptus/propolis (60:40) derived from maceration with water bath, showed the most promising results, with inhibition ability against all bacteria. As for the antifungal ability, no inhibition was obtained at the maximum tested concentration of 10 mg/mL. In addition to these encouraging results for antimicrobial activity, further bioactivity assays will be performed to evaluate the properties of the different extracts.pt_PT
dc.description.sponsorshipThe authors are grateful to the Foundation for Science and Technology (FCT, Portugal) for financial support through national funds FCT/MCTES (PIDDAC) to CIMO (UIDB/00690/2020 and UIDP/00690/2020) and SusTEC (LA/P/0007/2021). L. Barros and S. Falcão thank the national funding by FCT through the institutional scientific employment program-contract for her contract, while S. Heleno thank FCT through the individual scientific employment program-contracts (CEECIND/03040/2017). I. Oliveira thanks FCT for her PhD grant (BD/06017/2020).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAbir, Tebai; Oliveira, Izamara; Falcão, Soraia; Rejeb, Ines Bem; Barros, Lillian; Heleno, Sandrina A. (2022). Antimicrobial activity of rosemary, eucalyptus and propolis individual and mixed extracts. In XXVI Encontro Galego-Portugues de Química: Book of Abstracts. Santiago de Compostelapt_PT
dc.identifier.isbn978-84-09-45895-0
dc.identifier.urihttp://hdl.handle.net/10198/27797
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherUniversidade de Santiago de Compostelapt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectRosemarypt_PT
dc.subjectEucalyptuspt_PT
dc.subjectPropolispt_PT
dc.subjectResearch Subject Categories::TECHNOLOGY::Chemical engineering::Food technologypt_PT
dc.titleAntimicrobial activity of rosemary, eucalyptus and propolis individual and mixed extractspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceSantiago de Compostelapt_PT
oaire.citation.endPage81pt_PT
oaire.citation.startPage81pt_PT
oaire.citation.titleXXVI Encontro Galego-Portugues de Química: Book of Abstractspt_PT
person.familyNameOliveira
person.familyNameFalcão
person.familyNameBarros
person.familyNameHeleno
person.givenNameIzamara
person.givenNameSoraia
person.givenNameLillian
person.givenNameSandrina A.
person.identifier711432
person.identifier469085
person.identifier.ciencia-id7E1C-E181-938C
person.identifier.ciencia-idD41A-6BED-4CBB
person.identifier.ciencia-id9616-35CB-D001
person.identifier.ciencia-id8B18-3095-6FC9
person.identifier.orcid0000-0002-2274-2166
person.identifier.orcid0000-0003-3735-6951
person.identifier.orcid0000-0002-9050-5189
person.identifier.orcid0000-0001-7224-1098
person.identifier.ridJ-3600-2013
person.identifier.ridL-5951-2014
person.identifier.scopus-author-id14832459200
person.identifier.scopus-author-id35236343600
person.identifier.scopus-author-id30067731800
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublication96ebaa07-2d7d-42c2-974c-ae73a42376a2
relation.isAuthorOfPublication5746ab3e-8ffe-4e26-9a41-8392cf031f28
relation.isAuthorOfPublication3af07ffe-f914-48ba-a5d5-efcf70fdce01
relation.isAuthorOfPublicatione89b5bf5-d315-49b6-871e-fa8eb6030676
relation.isAuthorOfPublication.latestForDiscoverye89b5bf5-d315-49b6-871e-fa8eb6030676

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