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Authentication of vegetable oils.
Cunha, S.C.; Amaral, J.S.; Oliveira, M.B.P.P.Authenticity of vegetable oils continues to be a challenge and the target of many studies. Consumers expectancy on healthier products that conform to the labelled information, and the vast amount of legislation a bout the correct characterisation and classification of vegetable oils have boosted a number of scientific works on this subject. Analytical t echniques to face this challenge are, at least, as manifol...
Tratamento hipofracionado de radioterapia em felinos portadores de carcinoma ep...
Cunha,S.C.S.; Carvalho,L.A.V.; Canary,P.C.; Reisner,M.; Corgozinho,K.B.; Pereira,A.N.; Holguin,P.G.; Souza,H.J.M.; Ferreira,A.M.R.Avaliou-se a eficácia do protocolo radioterápico hipofracionado no tratamento de felinos portadores de carcinoma epidermóide facial. Um protocolo hipofracionado de radioterapia foi aplicado em cinco gatos portadores de um ou mais carcinomas epidermóides faciais, em um total de 10 lesões neoplásicas, confirmadas por meio de análise histológica. Duas lesões foram classificadas como T1, quatro como T2, duas como T...
Chemometric characterization of three varietal olive oils (Cvs. cobrancosa, mad...
Matos, L.C.; Cunha, S.C.; Amaral, J.S.; Pereira, J.A.; Andrade, P.B.; Seabra, R.M.; Oliveira, M.B.P.P.This paper evaluates the usefulness of three chemical parameters (compositions on tocopherols, sterols and fatty acids) as a tool to discriminate three varietal olive oils (Cvs. Cobrançosa, Madural and Verdeal Transmontana), which are permitted cultivars for the production of ‘‘Trás-os-Montes olive oil’’, a Portuguese protected designation of origin (PDO) product. The olives were collected during the year crop ...
Quantification of tocopherols and tocotrienols in Portuguese olive oils using H...
Cunha, S.C.; Amaral, J.S.; Fernandes, J.O.; Oliveira, M.B.P.P.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 suppo...
Classification PDO olive oils on the basis of their sterol composition by multi...
Alves, M.R.; Amaral, J.S.; Cunha, S.C.; Pereira, J.A.; Oliveira, M.B.P.P.The sterol compositions (GLC/FID/capillary column) of monovarietal olive oils (51 samples) from the most important cultivars of northeastern Portugal (Cvs. Cobranc¸osa, Madural and Verdeal Transmontana) and 27 commercial samples of olive oils with protected denomination of origin (PDO) from the same region and cultivars were evaluated. Δ-sitosterol, Δ5-avenasterol and campesterol were the most representative st...
Simultaneous determination of tocopherols and tocotrienols in virgin olive oils...
Cunha, S.C.; Amaral, J.S.; Fernandes, J.O.; Oliveira, M.B.P.P.
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