4 documents found, page 1 of 1
Distinct fatty acid profile of ten brown macroalgae
Silva,Graça; Pereira,Renato B.; Valentão,Patrícia; Andrade,Paula B.; Sousa,CarlaIt is widely accepted that the consumption of ω-3 polyunsaturated fatty acids has beneficial effects on human health. In this work, ten brown macroalgae species collected along the Portuguese west coast were studied for their fatty acids composition by GC-MS after alkaline hydrolysis and derivatization. The results of this survey showed that different macroalgae from the same region display distinct fatty acids...
Influence of Tunisian Ficus carica fruit variability in phenolic profiles and i...
Faleh,Emna; Oliveira,Andreia P.; Valentão,Patrícia; Ferchichi,Ali; Silva,Branca M.; Andrade,Paula B.Ficus carica L., Moraceae, is one of the first plants that were cultivated by humans, being the fruit an important crop worldwide for dry and fresh consumption. In this work, phenolics and antioxidant potential of dried fruits of seventeen Tunisian F. carica varieties, from green, red and black phenotypes, were assessed for the first time. HPLC-DAD analysis was performed. All samples presented a similar qualita...
Metabolic and biological prospecting of Coreopsis tinctoria
Gaspar,Luís; Oliveira,Andreia P.; Silva,Luís R.; Andrade,Paula B.; Pinho,Paula Guedes de; Botelho,João; Valentão,PatríciaCoreopsis tinctoria Nutt., Asteraceae, flowering tops infusion has been traditionally used in many countries to control hyperglycaemia. In this work we report for the first time fatty acids and volatile compounds in this species. Fifteen fatty acids and sixteen volatile compounds were determined by GC-ITMS, being saturated fatty acids and monoterpenes the main compounds. The antioxidant and antibacterial potent...
Chemical composition and biological screening of Capsella bursa-pastoris
Grosso,Clara; Vinholes,Juliana; Silva,Luís R.; Pinho,Paula Guedes de; Gonçalves,Rui F.; Valentão,Patrícia; Jäger,Anna K.; Andrade,Paula B.Capsella bursa-pastoris (L.) Medik. (Brassicaceae) is a wild herb with high nutritional value that can be eaten raw or cooked. A metabolomic study was performed with different extracts of its aerial parts that were tested concerning their antiradical, acetylcholinesterase inhibitory and antibacterial activities. Phenolic compounds were identified and quantified by HPLC-DAD, organic acids and amino acids were de...