Encontrados 13 documentos, a visualizar página 1 de 2
Nutritional composition, antioxidant activity and phenolic compounds of wild Ta...
Dias, Maria Inês; Barros, Lillian; Alves, Rita C.; Oliveira, M.B.P.P.; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R.Flowers and vegetative parts of wild Taraxacum identified as belonging to sect. Ruderalia were chemically characterized in nutritional composition, sugars, organic acids, fatty acids and tocopherols. Furthermore, the antioxidant potential and phenolic profiles were evaluated in the methanolic extracts, infusions and decoctions. The flowers gave higher content of sugars, tocopherols and flavonoids (mainly luteol...
Nutritional and antioxidant contributions of Laurus nobilis L. leaves: would b...
Dias, Maria Inês; Barros, Lillian; Dueñas, Montserrat; Alves, Rita C.; Oliveira, M.B.P.P.; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R.Medicinal and aromatic plants are used since ancient times in folk medicine and traditional food, but also in novel pharmaceutical preparations. The controversy lies in the use of cultivated and/or wild plants presenting both advantages and disadvantages in biological, ecological but also economic terms. Herein, cultivated and wild samples of Laurus nobilis L. were chemically characterized regarding nutritional...
Angolan cymbopogon citratus used for therapeutic benefits: nutritional composit...
Soares, Marta O.; Alves, Rita C.; Pires, Pedro C.; Oliveira, M. Beatriz P. P.; Vinha, Ana F.Folk medicine is a relevant and effective part of indigenous healthcare systems which are, in practice, totally dependent on traditional healers. An outstanding coincidence between indigenous medicinal plant uses and scientifically proved pharmacological properties of several phytochemicals has been observed along the years. This work focused on the leaves of a medicinal plant traditionally used for therapeutic...
Antioxidant properties of flowers and vegetative parts of wild Taraxacum sect. ...
Dias, Maria Inês; Barros, Lillian; Sousa, Maria João; Alves, Rita C.; Oliveira, M.B.P.P.; Ferreira, Isabel C.F.R.The species of the genus Taraxacum are known as dendalion (due to the shape of the leaves) and are commonly found in the Northern Hemisphere, in inhabiting fields and roadsides with warmer temperatures. Dendalion infusion and decoction are used in traditional medicine to treat kidney disease, dyspepsia, arthritic and rheumatic complaints, skin problems like eczema and even diabetes mellitus. Besides the pharmac...
Phytochemical characterization and antioxidant activity of methanolic extracts ...
Dias, Maria Inês; Barros, Lillian; Dueñas, Montserrat; Sousa, Maria João; Alves, Rita C.; Oliveira, M.B.P.P.; Santos-Buelga, CelestinoLaurtts nobilis L., commonly known as bay leave, is a medicinal and aromatic plant of Lauraceae family, being widely used in many food products as a flavouring agent. The leaf extract is used in folk medicine for its anticonvulsive and antiepileptic activities. but also against migraine, headaches, bacterial and fungal infections and gastric ulcers; the infusions are used for its diuretic and carminative proper...
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...
A comparative study of bioactive properties of wild and commercial Achillea mil...
Dias, Maria Inês; Barros, Lillian; Carvalho, Ana Maria; Alves, Rita C.; Oliveira, M.B.P.P.; Ferreira, Isabel C.F.R.Achillea millefolium L., commonly known as yarrow, is a medicinal plant with high bioactive value. Its infusion, decoction and alcoholic extract are widely used in Europe to treat digestive and intestinal problems, but also due to their antitumor, antimicrobial, anti-inflammatory and antioxidant properties [1]. In the present work, methanolic extract, infusion and decoction of wild and commercial yarrow were st...
Chromatographic analysis of individual phenolic compounds in flowers and vegeta...
Dias, Maria Inês; Barros, Lillian; Alves, Rita C.; Oliveira, M.B.P.P.; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R.The vast genus of Taraxacum species, commonly known as dandelion, is often found in warm regions of the northern hemisphere. Used since ancient times in folk medicine for their curative properties, dandelion presents very interesting bioactive properties111• The incessant search and investigation for new and safe bioactive compounds is, nowadays, a milestone for ethnomedicine. In the present work, the individua...
Benefícios do café na saúde: mito ou realidade?
Alves,Rita C.; Casal,Susana; Oliveira,BeatrizCoffee is widely consumed and appreciated all over the world, both for their stimulating effect and organoleptic characteristics. Due to its complex chemical composition and the factors involving brews preparation, the consumer is exposed to a wide range of chemical compounds. Several investigations aimed to clarify and understand coffee health effects. There is no evidence that moderate consumption could be ha...
Vitamin E profile as a reliable authenticity discrimination Factor between ches...
Barreira, João C.M.; Alves, Rita C.; Casal, Susana; Ferreira, Isabel C.F.R.; Oliveira, M.B.P.P.; Pereira, J.A.In this study, the profile of tocopherols and tocotrienols in chestnut (Castanea sativa Mill.) kernel oil was evaluated. Four Portuguese chestnut varieties were selected: Aveleira, Boaventura, Judia, and Longal. The vitamin E determination had already been applied to similar matrices, but, to the authors’ knowledge, it is the first time that chestnut kernel oil has been evaluated. The prevalent vitamer was γ-to...
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