Publication
Bioactive compounds and biological properties of oils from three camelia species
| dc.contributor.author | Salinero, Carmen | |
| dc.contributor.author | Garcia–Santal, Carmen | |
| dc.contributor.author | Tolentino, Georgina Santos | |
| dc.contributor.author | Estevinho, Leticia M. | |
| dc.date.accessioned | 2018-04-23T10:20:35Z | |
| dc.date.available | 2018-04-23T10:20:35Z | |
| dc.date.issued | 2014 | |
| dc.description.abstract | The concentration of polyphenols and antimicrobial and antioxidant properties of oils obtained from seeds of Camellia japonica, Camellia sasanqua and Camellia grijsii, grown in Pontevedra (NW Spain), were studied. Oils were obtained by cold-pressed extraction. Standard methods for moisture, density and acid and iodine values were used to analyse the stability of the fresh oils. Strains of Klebsiella pneumonia, Salmonella sp., Staphylococcus epidermidis and Cryptococcus neoformans, all infectious pathogens in humans, were used to assess the antimicrobial properties of the oils. The concentration of polyphenols ranged from 0.02± 0.006 to 0.04 ± 0.001 mg of gallic acid per g in oils from C. japonica and C. grijsii, respectively. Concerning the antioxidant activity, determined using the DPPH• scavenging activity and the β-carotene bleaching assay. The highest value was found in C. grijsii and the lowest in C. japonica. All the oils showed antimicrobial activity, and exhibited different selectivity and Minimum Inhibitory Concentrations (MIC) for each microorganism under study. The most sensitive was K. pneumonia, followed by Salmonella sp., S. epidermidis and C. neoformans, the highest MIC value being found for C. neoformans. For all the microorganisms, the higher antimicrobial activity was obtained from the oil of C. grijsii, followed by C. sasanqua and C. japonica. Since the highest biological properties were found in the oil containing the highest concentration of polyphenols, it can be hypothesised that these bioactive compounds might play a role in those properties. | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10198/17160 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.publisher | Universidad de Salamanca | pt_PT |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt_PT |
| dc.subject | Antimicrobial activity | pt_PT |
| dc.subject | Antioxidantwe activity | pt_PT |
| dc.subject | Phenolic compounds | pt_PT |
| dc.title | Bioactive compounds and biological properties of oils from three camelia species | pt_PT |
| dc.type | conference object | |
| dspace.entity.type | Publication | |
| oaire.citation.conferencePlace | Pontevedra | pt_PT |
| oaire.citation.title | 2014 International Camellia Congress. | pt_PT |
| person.familyName | Estevinho | |
| person.givenName | Letícia M. | |
| person.identifier.ciencia-id | BA14-09D6-A406 | |
| person.identifier.orcid | 0000-0002-9249-1948 | |
| person.identifier.scopus-author-id | 6506577664 | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | conferenceObject | pt_PT |
| relation.isAuthorOfPublication | 4a1d5ba2-1854-4ca5-89a4-73f35e964df9 | |
| relation.isAuthorOfPublication.latestForDiscovery | 4a1d5ba2-1854-4ca5-89a4-73f35e964df9 |