3 Flavonoids
Mostrando 37-48 de 336 artigos, teses e dissertações.
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37. Simultaneous quantification of six flavonoids in four Scutellaria taxa by HPLC-DAD method
Abstract The objective of this study was to develop and validate a new HPLC method to quantify several flavonoids in the methanol extract prepared from the aerial parts of four Scutellaria L. taxa from flora of Turkey. A simple, sensitive and precise reversed phase HPLC-DAD method was developed and validated for simultaneous determination of six main flavono
Rev. bras. farmacogn.. Publicado em: 2019-02
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38. Increased polyphenols and antioxidant activity of rice bean (Vigna umbellata L.) sprouts induced by Methyl Jasmonate: the promotion effect of Methyl Jasmonate on rice bean sprouts
Abstract Rice bean (Vigna umbellata L.) sprouts are richer in metabolites and biological activities after germination. The total polyphenol and total flavonoid contents were analyzed during the sprouting process. The antioxidant activities of the sprouts were tested using 1,1-diphenyl-2- picrylhydrazyl radical (DPPH) screening assay. To determine the reason
Food Sci. Technol. Publicado em: 13/12/2018
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39. Commercial drugs containing flavonoids are active in mice with malaria and in vitro against chloroquine-resistant Plasmodium falciparum
BACKGROUND The main strategy to control human malaria still relies on specific drug treatment, limited now by Plasmodium falciparum-resistant parasites, including that against artemisinin derivatives. Despite the large number of active compounds described in the literature, few of them reached full development against human malaria. Drug repositioning is a f
Mem. Inst. Oswaldo Cruz. Publicado em: 06/12/2018
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40. Anti-ophidian activity of Bredemeyera floribunda Willd. (Polygalaceae) root extract on the local effects induced by Bothrops jararacussu venom
Bredemeyera floribunda roots are popularly used to treat snakebites in the semiarid region of Northeast Brazil, and previous studies indicate the anti-ophidian actions of triterpenoid saponins found in its roots. To assess B. floribunda root extract (BFRE) activity against the effects of Bothrops jararacussu venom (BjuV), antiphospholipasic, antiproteolytic,
Braz J Med Biol Res. Publicado em: 03/12/2018
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41. Hypoglycemic activity of Capparis ovata desf. var. palaestina zoh. methanol extract
Caper (Capparis ovata Desf. and Capparis spinosa L.) is naturally widespread in Turkey. Traditionally, buds, fruits, seeds and roots of this plant are used as tonic, diuretic, anti-rheumatic, expectorant, antidiabetic, and antifungal. The aim of this study is to evaluate potential hypoglycemic effect of C. ovata var. palaestina extracts in alloxan-induced di
Braz. J. Pharm. Sci.. Publicado em: 29/11/2018
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42. INFLUÊNCIA DO MÉTODO EXTRATIVO NO TEOR DE FLAVONOIDES DE Cnidoscolus quercifolius POHL (EUPHORBIACEAE) E ATIVIDADE ANTIOXIDANTE
Cnidoscolus quercifolius Pohl is a Brazilian medicinal plant from Caatinga biome and possesses several pharmacological properties. Phytochemical investigations have attributed some of these properties to the presence of flavonoids. In this paper, we report the influence of the extraction process on the flavonoid content obtained from leaves of C. quercifoliu
Quím. Nova. Publicado em: 2018-07
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43. Lipoxygenase inhibitors flavonoids from Cyperus rotundus aerial parts
ABSTRACT Cyperus rotundus L. (Suada, Sueda, family: Cyperaceae) is vastly spread in several world's subtropical and tropical regions. It had variable traditional uses and bioactivities. A new flavonol derivative: cyperaflavoside (myricetin 3,3',5'-trimethyl ether 7-O-β-D-glucopyranoside) and five flavonoids: vitexin, orientin, cinaroside, quercetin 3-O-β-D
Rev. bras. farmacogn.. Publicado em: 2018-06
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44. An Environmentally Friendly Procedure to Obtain Flavonoids from Brazilian Citrus Waste
Currently, most food waste is used as animal feed and this process does not take advantage of the available chemical composition. A Brazilian example is the citrus fruit processing wastes (CFPW), which have begun to draw attention due to their biological importance. In order to access the main compounds of this matrix, an efficient and environmentally friend
J. Braz. Chem. Soc.. Publicado em: 2018-05
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45. Investigation of phenolic profiles and antioxidant activities of some Salvia species commonly grown in Southwest Anatolia using UPLC-ESI-MS/MS
Abstract Aerial parts of Salvia albimaculata Hedge & Hub.-Mor., Salvia potentillifolia Boiss & Heldr. ex Bentham. and Salvia nydeggeri Hub.-Mor. from Soutwest Anatolia, Turkey were evaluated to determine their phenolic compounds and antioxidant properties. According to the ultra performance liquid chromatography with electrospray ionization tandem mass spec
Food Sci. Technol. Publicado em: 19/04/2018
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46. Flavonoids, phenolic content, and antioxidant activity of propolis from various areas of Guanajuato, Mexico
Abstract Propolis is a resin gathered by honey bees from trees and shrubs but it used in the beehive as building material or as an antibiotic paste. The aim of this study was to determine the content of flavonoids and phenols, as well as the antioxidant capacity of propolis from various regions of Guanajuato, Mexico. The content of flavonoids and phenols wa
Food Sci. Technol. Publicado em: 16/04/2018
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47. PHENOLIC DERIVATIVES AND ANTIOXIDANT ACTIVITY OF POLAR EXTRACTS FROM Bauhinia pulchella
A tea made with the leaves or stem bark of Bauhinia pulchella Benth (Fabaceae) is used in the treatment of diabetes. Ethanol (EEF) and aqueous (EAF) extracts were obtained from the leaves and the antioxidant and citotoxic activities were tested, as well as quantify the content of flavonoids and phenolic compounds (TPC). EEF and EAF showed similar profiles by
Quím. Nova. Publicado em: 2018-04
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48. Changes in the phenylalanine ammonia lyase activity, total phenolic compounds, and flavonoids in Prosopis glandulosa treated with cadmium and copper
ABSTRACT The aim of the present work is to evaluate the changes on the phenylalanine ammonia lyase (PAL) activity, phenolic compounds accumulation and photochemical efficiency in leaves of P. glandulosa treated with Cd2+ (0.001 M) and Cu2+ (0.52 M) concentrations for 96 h under hydroponic conditions. The results showed that only leaves treated with copper ha
An. Acad. Bras. Ciênc.. Publicado em: 2018-04