Flavonoids, total phenolics and antioxidant capacity: comparison between commercial green tea preparations
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چکیده
منابع مشابه
Antioxidant activity, phenolics content and total flavonoids of caper fruit (Caparis spinosa) at different maturity stages
Background and objectives: Capparis spinosa is a perennial herb belonging to the Capparidaceae family that is mainly distributed in arid and semi-arid regions of the tropical and subtropical world. The plant is a potential source of valuable nutrients that is valued for human food. The fruit of this plant, being a rich source of high-value components, is usually pickle...
متن کاملTotal Phenolics and Total Flavonoids in Selected Indian Medicinal Plants
Plant phenolics and flavonoids have a powerful biological activity, which outlines the necessity of their determination. The phenolics and flavonoids content of 20 medicinal plants were determined in the present investigation. The phenolic content was determined by using Folin-Ciocalteu assay. The total flavonoids were measured spectrophotometrically by using the aluminium chloride colorimetric...
متن کاملEffect of freezing and storage on the phenolics, ellagitannins, flavonoids, and antioxidant capacity of red raspberries.
Scottish-grown red raspberries are a rich source of vitamin C and phenolics, most notably, the anthocyanins cyanidin-3-sophoroside, cyanidin-3-(2(G)-glucosylrutinoside), and cyanidin-3-glucoside, and two ellagitannins, sanguiin H-6 and lambertianin C, which are present together with trace levels of flavonols, ellagic acid, and hydroxycinnamates. The antioxidant capacity of the fresh fruit and t...
متن کاملFlavonoids, Phenolics, and Antioxidant Capacity in the Flower of Eriobotrya japonica Lindl.
Flavonoids and phenolics are abundant in loquat flowers. Methanol had the highest extraction efficiency among five solvents, followed by ethanol. Considering the safety and residue, ethanol is better as extraction solvent. The average content of flavonoids and phenolics of loquat flower of five cultivars were 1.59 ± 0.24 and 7.86 ± 0.87 mg/g DW, respectively, when using ethanol as extraction so...
متن کاملAssessment of Antioxidant Potential, Total Phenolics and Flavonoids of Different Solvent Fractions of Monotheca Buxifolia Fruit
OBJECTIVES This study was conducted to investigate the antioxidant potential of methanol extract and its derived fractions (hexane, ethyl acetate, butanol, and aqueous) of fruits of Monotheca buxifolia (Falc.) Dc., a locally used fruit in Pakistan. METHODS Dried powder of the fruit of M. buxifolia was extracted with methanol and the resultant was fractionated with solvents having escalating p...
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ژورنال
عنوان ژورنال: Ciência e Tecnologia de Alimentos
سال: 2010
ISSN: 0101-2061
DOI: 10.1590/s0101-20612010000400037