Encontrados 27 documentos, a visualizar página 1 de 3
Bryonia dioica, Tamus communis and Lonicera periclymenum fruits: characterizati...
Barreira, João C.M.; Pereira, Eliana; Dueñas, Montserrat; Carvalho, Ana Maria; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R.Plants are being increasingly used in dermatological formulations, since their collateral effects are lower than those caused by synthetic products. Hydrogels represent efficient formulations to incorporate plant extracts, providing good percutaneous absorption, non-greasy texture and easy application. Bryonia dioica Jacq. (white-bryony), Tamus communis L. (black-bryony) and Lonicera periclymenum L. (honeysuckl...
Relevance of the mention to antioxidant properties in yogurts label: in vitro e...
Pereira, Eliana; Barros, Lillian; Ferreira, Isabel C.F.R.The purpose of the inclusion of fruit (natural additives) in yogurt aims to increase its antioxidant activity and functionality. Herein, a comparative study of the antioxidant potential of yogurts with pieces of various fruits was performed, including yogurts with mention of antioxidant properties in the label. Free radicals scavenging activity, reducing power and inhibition of lipid peroxidation were evaluated...
Uma contribuição para o inventário químico e nutricional de cogumelos silvestre...
Pereira, Eliana; Martins, Anabela; Ferreira, Isabel C.F.R.Os cogumelos silvestres são um importante recurso complementar de ecossistemas florestais e outros, sendo amplamente valorizados pelas indústrias alimentar e fam1acêutica. Para além de serem considerados nutricionalmente excelentes, acumulam uma variedade de metabolitos bioativos nomeadamente, compostos fenólicos, policétidos, terpenos, esteroides e polissacáridos, com propriedades antioxidantes, imunomodulador...
Bioactivity of Chenopodium ambrosioides L.: antioxidant and antitumour potentia...
Barros, Lillian; Pereira, Eliana; Dueñas, Montserrat; Carvalho, Ana Maria; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R.Medicinal plants are recognized as important sources of novel biomolecules, which theoretically can be used in the treatment of diverse diseases. Chenopodium ambrosioides L. (Amaranthaceae; syn: Dysphania ambrosioides (L.) Mosyakin & Clemants) is an example of a plant formerly used in Portuguese traditional medicine, normally consumed as infusion of its dried leaves and flowering stems. lt has diverse pharmacol...
Wild Ginkgo biloba L. infusion supplies a higher amount of tocopherols than die...
Pereira, Eliana; Barros, Lillian; Batista, Eugénia; Ferreira, Isabel C.F.R.The oxidative stress has a very high input in the development of neuritic abnormalities (1]. The powerful action exerted by Ginkgo bilobaL on cerebral vascular activity led to an increasing interest on its medicinal potential, mainly related to antioxidant properties (2]. Tocopherols are known to be powerful antioxidants through free radicals scavenging activity that allows the inhibition of lipid peroxidation....
A comparative study between antioxidant properties of Ginkgo biloba L. infusion...
Pereira, Eliana; Barros, Lillian; Batista, Eugénia; Ferreira, Isabel C.F.R.The medical interest in western Ginkgo bilobaL. has increased since the 1980s, due to its potent action on the cerebral vascular activity and, in particular, for Alzheimer's disease. A variety of mechanisms of neuronal degeneration in Alzheimer's disease has been proposed, which includes formation of free radicals and oxidative stress [1 ,2]. Regarding the described correlation between antioxidants and Alzheime...
Chemical composition of wild and commercial Achillea millefolium L. and bioacti...
Dias, Maria Inês; Barros, Lillian; Dueñas, Montserrat; Pereira, Eliana; Carvalho, Ana Maria; Alves, Rita C.; Oliveira, M.B.P.P.Medicinal plants used in folk medicine are being increasingly studied and used on pharmaceutical, food and nutraceutical fields. Herein, wild and commercial samples of Achillea millefolium L. (yarrow) were chemically characterized with respect to their macronutrients, free sugars, organic acids, fatty acids and tocopherols. Furthermore, in vitro antioxidant properties (free radicals scavenging activity, reducin...
Chemical characterization of Ginkgo biloba L. and antioxidant properties of its...
Pereira, Eliana; Barros, Lillian; Ferreira, Isabel C.F.R.Ginkgo biloba L. is the most commercialized medicinal plant worldwide, being its consumption related to prevention, and even decrease of the progression of degenerative neurological diseases. Considering the correlation between oxidative stress and the mentioned diseases, the antioxidant activity of different dietary supplements (syrup and several pills) was evaluated and compared to the leaves infusion, aqueou...
Bioactivity and chemical characterization in hydrophilic and lipophilic compoun...
Barros, Lillian; Pereira, Eliana; Calhelha, Ricardo C.; Dueñas, Montserrat; Carvalho, Ana Maria; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R.The bioactive properties (antioxidant and antitumour activities, and hepatotoxicity) of the infusion and methanolic extracts of Chenopodium ambrosioides L., a plant commonly used in Portuguese folk medicine, were compared. The chemical composition in hydrophilic (sugars, organic acids and phenolic compounds) and lipophilic (fatty acids and tocopherols) fractions were determined. In general, the infusion reveale...
Avaliação da atividade antioxidante da planta Ginkgo biloba L. – infusão e supl...
Pereira, Eliana; Barros, Lillian; Ferreira, Isabel C.F.R.Ginkgo biloga L. é uma planta medicinal utilizada na prevenção e diminuição da progressão de doenças neurológicas degenerativas, nomeadamente a doença de Alzheimer. Alguns estudos indicam que muitas das alterações neurológicas resultam de danos oxidativos [1,2]. Tendo em conta a correlação entre o stresse oxidativo e esta patologia, decidiu-se avaliar a atividade antioxidante de diferentes suplementos dietétic...
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