Proanthocyanidins
Mostrando 13-24 de 38 artigos, teses e dissertações.
-
13. Enriquecimento de compostos fenólicos de folhas de Inga edulis por extração em fase sólida: quantificação de seus compostos majoritários e avaliação da capacidade antioxidante
A phenolic fraction was obtained from of the acetone-water-acetic acid extract of Inga edulis leaves, by liquid-liquid partition and SPE-C18 cartridges. This method provided an increase of 108, 66, 51, 50 and 36% of flavonols, proanthocyanidins, total polyphenols, gallotannins and flavanols, respectively. The major phenolics in purified fraction were procyan
Química Nova. Publicado em: 2010
-
14. Cooking effect and inhibition of angiotensin I converting enzyme and alpha-amylase by compound phenolics from brown rice / Efeito do cozimento e ação dos compostos fenólicos de arroz integral na inibição da enzima conversora de angiotensina I e da alfa-amilase
Rice (Oryza sativa L.) sustains at present about half of the world´s population. Consumption is mainly in its milled form, but brown rice has prompted further research due to bioactive compounds present in the pericarp of the grain. Some of the positive health effects have been attributed to radical scavenging activity and other biological effects such as i
Publicado em: 2009
-
15. Fitoquímica e atividade vasodilatadora "in vitro de" "Mansoa hirsuta D.C.".
Mansoa hirsuta DC (Bignoniaceae) is a liana found in the Atlantic forest. There is no record of ethnomedical use for this species, although its leaves have been reported to inhibit in vitro the angiotensin-converting enzyme (ACE). The goal of the present study was to evaluate the potential antihypertensive effect of this species and to isolate the bioactive
Publicado em: 2008
-
16. Acute kidney injury by glycerol: antioxidant effect of Vitis Vinifera L. / Lesão renal aguda por glicerol: efeito antioxidante da Vitis Vinifera L.
A Lesão Renal Aguda (LRA) é a complicação mais grave da rabdomiólise. Nessa síndrome, a liberação do pigmento heme desencadeia uma lesão que se caracteriza por vasoconstrição glomerular e toxicidade celular direta com componente oxidativo. A lesão oxidativa desencadeada é uma das linhas fisiopatológicas mais intrigantes. A renoproteção com an
Publicado em: 2007
-
17. Antioxidant and antiviral properties of Pseudopiptadenia contorta (Leguminosae) and of quebracho (Schinopsis sp.) extracts
Proanthocyanidins from P. contorta leaves and from a commercial quebracho extract were isolated and characterized. Flavonoids, catechins and gallic acid were also identified in the extracts of P. contorta. Compounds were evaluated for their antioxidant properties and for their antiviral activity against an acyclovir-resistant herpes simplex virus type 1 stra
Química Nova. Publicado em: 2005-06
-
18. Constituintes químicos bioativos de dioclea violacea.
O presente trabalho descreve o estudo fitoquímico de Dioclea violacea Mart. além da avaliação das atividades antioxidante e imunomoduladora das substâncias isoladas. Dioclea violacea é uma trepadeira pertencente à família Leguminosae (Fabaceae), subfamília Faboideae (Papilionoideae), tribo Phaseoleae, que ocorre no litoral desde a Guiana até o esta
Publicado em: 2005
-
19. Estudo físico-químico, químico e biológico de extrato das cascas de Stryphnodendron polyphyllum Mart. (Leguminosae)
Two flavan-3-ols and one proanthocyanidins have been isolated from the stem bark of Stryphnodendron polyphyllum Mart., which is traditionally used in Brazil against various diseases. The structure was determined on the basis of spectroscopic data including 1-D (¹H, 13C) and 2-D NMR (¹H/¹H COSY) and MS. The antibacterial activities of an acetone:water and
Revista Brasileira de Farmacognosia. Publicado em: 2003
-
20. Aroeira da praia: estudo farmacognÃstico e da atividade biolÃgica de Schinus terebinthifolius raddi (anacardiaceae)
The present work ment to validate traditional knowledge about Aroeira (Schinus therebenthifolium Raddi, Anacardiaceae). The evaluation between efficacy and safety of the crude extract and its terpenoid and tannic fractions was based on ANVISA Resolution RDC n 17/200 on phytotherapics. The fractions were made from bark of stems to establish a pharmacognosti
Publicado em: 2002
-
21. Pigmented Soybean (Glycine max) Seed Coats Accumulate Proanthocyanidins during Development.
The dominant I gene inhibits accumulation of anthocyanin pigments in the epidermal layer of soybean (Glycine max) seed coats. Seed-coat color is also influenced by the R locus and by the pubescence color alleles (T, tawny; t, gray). Protein and RNA from cultivars with black (i,R,T) and brown (i,r,T) seed coats are difficult to extract. To determine the natur
-
22. Proanthocyanidins and Potential Precursors in Needles of Douglas Fir and in Cell Suspension Cultures Derived from Seedling Shoot Tissues 1
Proanthocyanidins and their potential precursors have been analyzed by paper chromatography and C18 reversed phase columns with high performance liquid chromatography. Total proanthocyanidins on a dry weight basis in cell suspension cultures derived from seedlings of Douglas fir (Pseudotsuga menziesii) were equal to or greater than those found in mature need
-
23. Comparison of Proanthocyanidins and Related Compounds in Leaves and Leaf-Derived Cell Cultures of Ginkgo bioloba L., Pseudotsuga menziesii Franco, and Ribes sanguineum Pursh 1
Proanthocyanidins, flavan-3-ols, and their flavanoid precursors in leaves and leaf-derived callus and cell suspension cultures have been isolated and analyzed by high performance liquid chromatography with C18 columns, paper chromatography, and by chemical and spectrophotometric methods. Cultures of Ginkgo biloba and Pseudotsuga menziesii (Douglas-fir) produ
-
24. Inhibitory effects of proanthocyanidins from Ribes nigrum leaves on carrageenin acute inflammatory reactions induced in rats
BioMed Central.