Flavonoids Determination
Mostrando 1-12 de 51 artigos, teses e dissertações.
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1. Development of isotonic beverage with functional attributes based on extract of Myrciaria jabuticaba (Vell) Berg
Abstract Isotonic repositories are specially designed to promote rehydration during or after physical exercise. These beverages are processed for commercialization from synthetic flavorings and dyes with sensorial characteristics similar to those of fruits, in order to attenuate their natural acidity. The aim of the present study was to develop two formulati
Food Sci. Technol. Publicado em: 2020-09
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2. Extract of Ellagitannins starting with Strawberries (Fragaria sp.) and Blackberries (Rubus sp.)
Abstract Characterize the content of phytochemical compounds present in samples of extracts of strawberry (Fragaria sp.) and blackberry (Rubus sp.). The extraction of said compounds was carried out with solutions of polar solvents, such as acetone, ethanol and methanol, using an experimental design with three factors: state of maturity, resting time and temp
Food Sci. Technol. Publicado em: 2020-06
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3. Development of isotonic beverage with functional attributes based on extract of Myrciaria jabuticaba (Vell) Berg
Abstract Isotonic repositories are specially designed to promote rehydration during or after physical exercise. These beverages are processed for commercialization from synthetic flavorings and dyes with sensorial characteristics similar to those of fruits, in order to attenuate their natural acidity. The aim of the present study was to develop two formulati
Food Sci. Technol. Publicado em: 20/12/2019
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4. Antioxidant potential of various solvent extract from Morus alba fruits and its major polyphenols composition
RESUMO: As condições de extração são um fator importante no processo de obtenção de compostos bioativos da matriz vegetal. Estes compostos diferem-se estruturalmente. As estruturas de fito conjugações e suas interações com outros ingredientes alimentares não são totalmente conhecidas, enquanto esses dois aspectos devem desempenhar um papel sign
Cienc. Rural. Publicado em: 13/12/2019
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5. Extract of Ellagitannins starting with Strawberries (Fragaria sp.) and Blackberries (Rubus sp.)
Abstract Characterize the content of phytochemical compounds present in samples of extracts of strawberry (Fragaria sp.) and blackberry (Rubus sp.). The extraction of said compounds was carried out with solutions of polar solvents, such as acetone, ethanol and methanol, using an experimental design with three factors: state of maturity, resting time and temp
Food Sci. Technol. Publicado em: 25/11/2019
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6. Toxicity and phytochemistry of eight species used in the traditional medicine of sul-mato-grossense, Brazil
Resumo O Cerrado brasileiro possui diversas espécies botânicas com fins medicinais utilizadas por comunidades tradicionais e muitas dessas plantas não estão incluídas na lista do Programa de Pesquisa de Plantas Medicinais da Central de Medicamentos. O objetivo deste estudo foi a triagem fitoquímica e o bioensaio toxicológico frente ao Brine shrimp L.
Braz. J. Biol.. Publicado em: 21/10/2019
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7. Sub-chronic toxicity evaluation of Dryopteris filix-mas (L.) schott, leaf extract in albino rats
This study evaluated the acute and sub-chronic toxicities of ethanol leaf extract of Dryopteris filix-mas. Acute toxicity and phytochemical tests on ethanol leaf extract were determined. In sub-chronic toxicity test, animals were treated with 62.5, 125, 250 and 500 mg/kg of extract every day for 90 days. Blood samples were collected via retro-orbital punctur
Braz. J. Pharm. Sci.. Publicado em: 03/10/2019
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8. AVALIAÇÃO DE COMPOSTOS BIOATIVOS E ATIVIDADE ANTIOXIDANTE DE EXTRATOS DE FOLHAS DE AMOREIRA PRETA (Morus nigra L.) UTILIZANDO PLANEJAMENTO EXPERIMENTAL
Extracts of black mulberry leaves present phytochemicals such as phenolic compounds and minerals. These substances have been studied because they show several health benefits. In this work we report the influence of drying temperature, infusion temperature and extraction time by means of factorial design monitoring the total phenolic content (CFT) of aqueous
Quím. Nova. Publicado em: 26/08/2019
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9. Eugenia Klotzschiana O. Berg Fruits as New Sources of Nutrients: Determination of their Bioactive Compounds, Antioxidant Activity and Chemical Composition
Abstract: The Cerrado is one of the world's biodiversity hotspots and Brazil’s second largest biome. Many native species of the Brazilian Cerrado provide fruits that have unique sensory characteristics and high nutritional value. This study aimed at characterizing the pulp of Eugenia klotzschiana O. Berg, concerning its proximal composition, bioactive comp
Braz. arch. biol. technol.. Publicado em: 13/06/2019
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10. Rapid quantitative analysis of six flavonoids in licorice by ultra-performance convergence chromatography
Abstract Objective This study was to establish a rapid quantitative method for determination of six characteristic flavonoids, including licochalcone A (1), liquiritigenin (2), glabridin (3), isoliquiritigenin (4), liquiritoside (5), and isoliquiritoside (6) in licorice by a ultra-performance convergence chromatography (UPC2) apparatus equipped with a phot
Food Sci. Technol. Publicado em: 11/04/2019
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11. 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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12. 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