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Please use this identifier to cite or link to this item: http://hdl.handle.net/10198/1483

Título: Quantification of tocopherols and tocotrienols in Portuguese olive oils using HPLC with three different detection systems
Autor: Cunha, S.C.
Amaral, J.S.
Fernandes, J.O.
Oliveira, M.B.P.P.
Palavras-chave: Tocopherols
Tocotrienols
Olive oil
NP-HPLC
Issue Date: 2006
Editora: ACS
Citação: Cunha, S.C.; Amaral, J.S.; Fernandes, J.O.; Oliveira, M.B.P.P. (2006) - Quantification of tocopherols and tocotrienols in Portuguese olive oils using HPLC with three different detection systems. Journal of Agricultural and Food Chemistry. ISSN 0021-8561. 54:9, p.3351–3356
Resumo: Three different HPLC detection systems were compared for the determination of tocopherols and tocotrienols in olive oil: fluorescence and diode array connected in series, ultraviolet, and evaporative light scattering. The best results were obtained with the fluorescence detector, which was successfully applied in the quantification of tocopherols and tocotrienols in 18 samples of Portuguese olive oils. To support the validity of the method, the parameters evaluated were linearity, detection limits, repeatability, and recovery. All of the studied samples showed similar qualitative profiles with six identified compounds: R-T, -T, γ-T, δ-T, R-T3, and γ-T3. R-Tocopherol (R-T) was the main vitamin E isomer in all samples ranging from 93 to 260 mg/kg. The total tocopherols and tocotrienols ranged from 100 to 270 mg/kg. Geographic origin did not seem to influence the tocopherol and tocotrienol composition of the olive oils under evaluation.
URI: http://hdl.handle.net/10198/1483
ISSN: 0021-8561
Versão do Editor: http://pubs.acs.org/journal/jafcau
Appears in Collections:DTQB - Artigos em Revistas Indexados ao ISI

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