Advisor(s)
Abstract(s)
Neste trabalho pretendeu-se determinar a composição em compostos
fenólicos de amostras de efluentes líquidos provenientes de diferentes lagares
de azeite do Norte de Portugal (Amarante, Mirandela, Castelo Rodrigo e
Frieira). Para tal, as águas ruças foram extraídas com acetato de etilo, o extracto
foi fraccionado por HPLC e as fracções foram analisadas por espectrometria de
massa (ESI-MS e ESI-MSn). Este procedimento permitiu verificar que o
composto maioritário era o hidroxitirosol, embora em concentração variável.
As amostras continham ainda outros compostos fenólicos comuns, tais como o
ácido clorogénico, o ácido cafeico, o ácido p-cumárico, o tirosol; secoiridoides
como o ácido elenólico, o oleosideo, o verbascosídeo, a oleuropeína, o
ligostrosídeo e alguns flavonóides como a luteolina, a quercetina e o glucosídeo
da luteolina.
This study intended to determine the composition of phenolic compounds in different olive wastewaters collected in the North of Portugal (Amarante, Mirandela, Castelo Rodrigo and Frieira). The samples were extracted with ethyl acetate, the extract was fractionated by HPLC and the fractions were analyzed by mass spectrometry (ESI-MS and ESI-MSn). Hydroxytyrosol was the main phenolic compound, although with variable concentrations. The samples also contained other common phenolic compounds such as chlorogenic acid, caffeic acid, p-coumaric acid, tyrosol; secoiridoids like elenolic acid, oleoside, verbascoside, oleuropein, ligostroside and some flavonoids like luteolin, quercetin and luteolin glycoside.
This study intended to determine the composition of phenolic compounds in different olive wastewaters collected in the North of Portugal (Amarante, Mirandela, Castelo Rodrigo and Frieira). The samples were extracted with ethyl acetate, the extract was fractionated by HPLC and the fractions were analyzed by mass spectrometry (ESI-MS and ESI-MSn). Hydroxytyrosol was the main phenolic compound, although with variable concentrations. The samples also contained other common phenolic compounds such as chlorogenic acid, caffeic acid, p-coumaric acid, tyrosol; secoiridoids like elenolic acid, oleoside, verbascoside, oleuropein, ligostroside and some flavonoids like luteolin, quercetin and luteolin glycoside.
Description
Keywords
Águas ruças Compostos fenólicos Hidroxitirosol Espectrometria de massa
Citation
Falcão, Soraia; Peres, António M.; Domingues, M.R.M.; Cardoso, Susana M. (2011). Valorização das águas ruças – Identificação de compostos antioxidantes. In V Simpósio Nacional de Olivicultura. Santarém
Publisher
Associação Portuguesa de Horticultura