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Antimicrobial and antifungal activities of a coloring extract rich in betacyanins obtained from the flowers of Gomphrena globosa L

2018Conference object Open access
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dc.contributor.authorRoriz, Custódio Lobo
dc.contributor.authorBarros, Lillian
dc.contributor.authorPrieto Lage, Miguel A.
dc.contributor.authorMorales, Patricia
dc.contributor.authorSoković, Marina
dc.contributor.authorBarreiro, M.F.
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2018-05-23T10:36:43Z
dc.date.available2018-05-23T10:36:43Z
dc.date.issued2018
dc.description.abstractThere is a huge diversity of pigments from natural origin that can be exploited as colorants in the food industry. Nonetheless, they can additionally provide several bioactive properties, which represent an added-value for food products. Carotenoids, chlorophylls, anthocyanins and betalains are some of the most studied plant-based pigments. Betalains, can be subdivided according to their chemical structure into betacyanins and betaxanthins [1]. Although less exploited than Beta vulgaris L., Gomphrena globosa L. is an important source of betacyanins [2], with antimicrobial and antifungal activity [3]. Thus, the aim of this study was to obtain a pigmented extract from G. globosa with a high antimicrobial and antifungal activity. This objective was implemented by the application of the response surface methodology (RSM), a robust optimization technique that allows to study jointly the effects of several variables and responses, namely in extraction procedures (in this case ultrasound assisted extraction (UAE)). To evaluate the antimicrobial and antifungal properties, the responses were the minimum inhibitory (MIC), minimum bactericidal (MBC) and minimum fungicidal (MFC) concentrations. The optimized UAE conditions were: 10.8 min, 410.5 W, 57.8% ethanol content (ethanol-water mixtures were used) and 5 g/L as solid-liquid ratio, providing the following responses: 1) antibacterial activity: MIC of ~0.15-0.35 g/L) and MBC of ~0.30-0.65 g/L; and 2) antifungal activity: MIC of ~0.20-0.30 g/L and MFC of ~0.40-0.65 g/L. In conclusion, the obtained results evidenced the potential application of the extracts from G. globosa as sources of betacyanins (natural colorants), but also as important antimicrobial and antifungal agents.pt_PT
dc.description.sponsorshipThe Foundation for Science and Technology and FEDER under Programme PT2020 for financial support to CIMO (UID/AGR/00690/2013); Project POCI-01-0145-FEDER-006984 – Associate Laboratory LSRE-LCM funded by FEDER through COMPETE 2020; C. Lobo Roriz (SFRH/BD/117995/2016) grant and L. Barros contract. This work is funded by the European Structural and Investment Funds (FEEI) through the Regional Operational Program North 2020, within the scope of Project NORTE-01-0145-FEDER-023289: DeCodE and project Mobilizador ValorNatural®.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRoriz, Custódio L.; Barros, Lillian; Prieto, M.A.; Morales, Patricia; Soković, Marina Barreiro, M.F.; Ferreira, Isabel C.F.R. (2018). Antimicrobial and antifungal activities of a coloring extract rich in betacyanins obtained from the flowers of Gomphrena globosa L. In 6PYCheM – 6th Portuguese Young Chemists Meeting. Setúbalpt_PT
dc.identifier.urihttp://hdl.handle.net/10198/17674
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationDevelopment of a new colouring agent from Gomphrena globosa L.: optimization of the extraction process, stability studies and proof-of-concept in a food matrix
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.titleAntimicrobial and antifungal activities of a coloring extract rich in betacyanins obtained from the flowers of Gomphrena globosa Lpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleDevelopment of a new colouring agent from Gomphrena globosa L.: optimization of the extraction process, stability studies and proof-of-concept in a food matrix
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FAGR%2F00690%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_NORTE/SFRH%2FBD%2F117995%2F2016/PT
oaire.citation.conferencePlaceSetúbal, Portugalpt_PT
oaire.citation.title6PYCheM – 6th Portuguese Young Chemists Meetingpt_PT
oaire.fundingStream5876
oaire.fundingStreamPOR_NORTE
person.familyNameRoriz
person.familyNameBarros
person.familyNamePrieto Lage
person.familyNameBarreiro
person.familyNameFerreira
person.givenNameCustódio Lobo
person.givenNameLillian
person.givenNameMiguel A.
person.givenNameFilomena
person.givenNameIsabel C.F.R.
person.identifier469085
person.identifier107688
person.identifier144781
person.identifier.ciencia-id9519-D97C-6B17
person.identifier.ciencia-id9616-35CB-D001
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person.identifier.ciencia-id3418-47D5-5746
person.identifier.ciencia-id9418-CF95-9919
person.identifier.orcid0000-0002-4021-1078
person.identifier.orcid0000-0002-9050-5189
person.identifier.orcid0000-0002-3513-0054
person.identifier.orcid0000-0002-6844-333X
person.identifier.orcid0000-0003-4910-4882
person.identifier.ridJ-3600-2013
person.identifier.ridG-4516-2011
person.identifier.ridL-9802-2014
person.identifier.ridE-8500-2013
person.identifier.scopus-author-id56151637600
person.identifier.scopus-author-id35236343600
person.identifier.scopus-author-id35937495700
person.identifier.scopus-author-id57188719717
person.identifier.scopus-author-id36868826600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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