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Phytochemical characterization and radical scavenging activity of Portulaca oleracea L. leaves and stems IPB - Escola Superior Agrária
Oliveira, I.; Valentão, P.; Lopes, R.; Andrade, P.B.; Bento, Albino; Pereira, J.A..
The present work aimed to proceed to the phytochemical characterization of purslane (Portulaca oleracea L.) and study of its antioxidant activity. Different samples were analyzed for their moisture and fat content, fatty acids, organic acids and phenolic compound composition and the scavenging effect of DPPH (2,2- diphenyl-1-picrylhydrazyl) radicals was evaluated. Water was the major constituent of purslane stems (average 90.5%) and leaves (average 91.8%), while fat values varied from 0.11% to 0.57%. Twenty seven fatty acids were found in the leaves samples, being linolenic acid the most abundant, ranging from 27.7 to 39.1%, followed by palmitic (19.3–24.3%) and oleic acids (11.6–19.5%). Five different organic acids were detected namely fumaric, aconitic,...
Tipo: Article Palavras-chave: Portulaca oleraceae L.; Fatty acids; Organic acids; Phenolic compounds; Antioxidant properties.
Ano: 2009 URL: http://hdl.handle.net/10198/3100
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