Publication
Bioactive potential of Rosa micrantha Borrer ex Sm. and Castanea sativa Mill. flowers as functional food ingredients: antioxidant and antifungal activity
| dc.contributor.author | Barros, Lillian | |
| dc.contributor.author | Ferreira, Isabel C.F.R. | |
| dc.date.accessioned | 2015-10-29T10:00:31Z | |
| dc.date.available | 2015-10-29T10:00:31Z | |
| dc.date.issued | 2014 | |
| dc.description.abstract | Natural products represent a rich source of biologically active compounds and are an example of molecular diversity, with recognized potential in drug discovery and development. Particularly, the plant kingdom offers a wide range of natural antioxidants, recognized by having remarkable medicinal properties [1,2]. These beneficial effects could be related to the high content in phenolic compounds, known for being strong scavengers of free radicals, which have key roles in ageing and various diseases, such as coronary heart disease, cancer or neurodegenerative diseases [3]. Phenolic compounds of Castanea sativa Mill. and Rosa micrantha Borrer ex Sm. flowers from Northeastern Portugal were characterized by our research group using HPLC-DAD-ESI/MS. Furthermore, it was performed a screening of their antifungal potential against Candida species (C. albicans, C. glabrata, C. parapsilosis and C. tropicalis) and the antioxidant activity was accessed by four in vitro assays: scavenging effects on DPPH (2,2-diphenyl-1-picrylhydrazyl) radicals, reducing power (ferricyanide Prussian blue assay), inhibition of β-carotene bleaching and inhibition of lipid peroxidation in brain cell homogenates by TBARS (thiobarbituric acid reactive substances) assay. The detailed results and all the authors that contributed to the studies are available in references [1-3]. Hydrolysable tannins (e.g. tri and digalloyl HHDP glucose) were the main group of phenolic compounds in C. sativa, while flavonoids (e.g. (+)-catechin and procyanidin dimers and trimers) were the most abundant group in R. micrantha. Thus, the stronger effect showed by this latter against all the Candida species and, particularly its fungicide effects in C. glabrata, might be related to the mentioned flavonoids that were inexistence in C. sativa sample. Otherwise, C. sativa showed the highest antioxidant activity (EC50 values between 30-110 μg/mL of extract). Therefore, these flowers may be incorporated as functional ingredients in food matrices to promote health benefits, but also to increase the products shelf life, through the observed antioxidant and antifungal properties. | pt_PT |
| dc.identifier.citation | Barros, Lillian; Ferreira, Isabel C.F.R. (2014). Bioactive potential of Rosa micrantha Borrer ex Sm. and Castanea sativa Mill. flowers as functional food ingredients: antioxidant and antifungal activity. In 5e Journées Scientifiques sur la Valorisation des Bioressources. Monastir, Tunisie | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10198/12214 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.relation | PRODER 46576- PlantLact | pt_PT |
| dc.relation | Strategic Project - UI 690 - 2011-2012 | |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt_PT |
| dc.title | Bioactive potential of Rosa micrantha Borrer ex Sm. and Castanea sativa Mill. flowers as functional food ingredients: antioxidant and antifungal activity | pt_PT |
| dc.type | conference object | |
| dspace.entity.type | Publication | |
| oaire.awardTitle | Strategic Project - UI 690 - 2011-2012 | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FAGR%2FUI0690%2F2011/PT | |
| oaire.citation.title | Cinquiènes Journées Scientifiques sur La Valorization des Bioresources | pt_PT |
| oaire.fundingStream | 6817 - DCRRNI ID | |
| person.familyName | Barros | |
| person.familyName | Ferreira | |
| person.givenName | Lillian | |
| person.givenName | Isabel C.F.R. | |
| person.identifier | 469085 | |
| person.identifier | 144781 | |
| person.identifier.ciencia-id | 9616-35CB-D001 | |
| person.identifier.ciencia-id | 9418-CF95-9919 | |
| person.identifier.orcid | 0000-0002-9050-5189 | |
| person.identifier.orcid | 0000-0003-4910-4882 | |
| person.identifier.rid | J-3600-2013 | |
| person.identifier.rid | E-8500-2013 | |
| person.identifier.scopus-author-id | 35236343600 | |
| person.identifier.scopus-author-id | 36868826600 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | conferenceObject | pt_PT |
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