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New biophenols in olive mill wastewaters

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dc.contributor.authorCardoso, Susana M.
dc.contributor.authorFalcão, Soraia
dc.contributor.authorPeres, António M.
dc.contributor.authorDomingues, Maria R.M.
dc.date.accessioned2012-07-11T08:46:59Z
dc.date.available2012-07-11T08:46:59Z
dc.date.issued2010
dc.description.abstractOlive mill wastewaters (OMW) have been attracting the attention of food and pharmaceutical industries, as it is a potential source of biophenols with a wide range of biological activities. This effluent produced in the olive oil industry contains approximately half of the total phenolic compounds of the olive fruit and it is currently exploited for industrial extraction of hydroxytyrosol [1]. Still, the phenolic composition of OMW is extremely complex, and many compounds are yet unidentified. In this context, the identification of unknown phenolic compounds can encourage the search of new bioactive compounds in OMW and contribute to further valorize this waste. In the present work, six new phenolic compounds were identified in Portuguese olive mill wastewaters. The phenolic extracts of OMW were obtained by methanol and were fractionated on Sep Pack C18 cartridges, by elution of the cartridges with 50% (v/v) methanol. The analysis of the purified fractions by electrospray mass spectrometry in the negative mode showed high relative abundant [M-H]− ions at m/z 539 and m/z 523, corresponding respectively to oleuropein and ligstroside isomers that contain the glucose unit linked to its hydroxytyrosol moiety. Glucoside derivatives of these compounds were also found in the two OMW samples. In particular, the fragmentation pathway of the [M-H]− ion at m/z 863 demonstrated the presence of a diglucoside derivative of the oleuropein isomer, while those of the ions at m/z 685 and m/z 847 were consistent with mono- and a di-glucosides of the ligstroside isomer, respectively. Moreover, the structure of an elenoic derivative of the ion at m/z 685 was also elucidated. Studies regarding the abundance and the iological activities of these compounds are now required to determine their possible industrial exploitation. [1] Agallias A., Magiatis P., Skaltsounis A.-P., Mikros E., Tsarbopoulos A., Gikas E., Spanos I., Manios T. (2007). J. Agric. Food Chem. 55: 2671-2676.por
dc.identifier.citationCardoso, Susana M.; Falcão, Soraia I.; Peres, António M.; Domingues, M. R. M. (2010). New biophenols in olive mill wastewaters. In 2010 EFFoST Annual Meeting - Food and Health. Dublin. PS2.47por
dc.identifier.urihttp://hdl.handle.net/10198/7176
dc.language.isoengpor
dc.peerreviewedyespor
dc.subjectPhenolic compoundspor
dc.subjectOlive mill wastewaterspor
dc.subjectOleuropeinpor
dc.subjectLigstrosidepor
dc.titleNew biophenols in olive mill wastewaterspor
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlace10-12 Novembro 2010, Dublin - Irlandapor
oaire.citation.endPagePS2.47por
oaire.citation.startPagePS2.47por
oaire.citation.title2010 EFFOST Annual Meeting - Food and Healthpor
person.familyNameFalcão
person.familyNamePeres
person.givenNameSoraia
person.givenNameAntónio M.
person.identifier711432
person.identifier107333
person.identifier.ciencia-idD41A-6BED-4CBB
person.identifier.ciencia-idCF16-5443-F420
person.identifier.orcid0000-0003-3735-6951
person.identifier.orcid0000-0001-6595-9165
person.identifier.ridI-8470-2012
person.identifier.scopus-author-id14832459200
person.identifier.scopus-author-id7102331969
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
relation.isAuthorOfPublication5746ab3e-8ffe-4e26-9a41-8392cf031f28
relation.isAuthorOfPublication7d93be47-8dc4-4413-9304-5b978773d3bb
relation.isAuthorOfPublication.latestForDiscovery7d93be47-8dc4-4413-9304-5b978773d3bb

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