Isolation of Flavonoid Compounds from Eceng Gondok (Eichhornia crassipes) and Antioxidant Tests with DPPH (1,1-Diphenyl-2-Picrylhydrazyl) Method
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چکیده
منابع مشابه
Analysis of Antioxidant in Curcuma Angustifolia Rhizome by 2,2-diphenyl-1-picrylhydrazyl (dpph) Method
Curcuma angustifolia also known as ‘haledo’ is commonly found in Sikkim and has many medicinal uses and has been used traditionally since ancient ages. Its rhizome is aromatic and the solvent extract of the rhizome has free radical scavenging activity which was carried out in this study by 2,2-diphenyl-1-picrylhydrazyl DPPH. Hot methanol extract and cold methanol extract of the dried powder of ...
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A reactive oxygen species has been implicated in a range of human pathological diseases such as atherosclerosis and certain cancers. Flavonoids are reported to exhibit various biological activities, including antioxidative and free radical scavenging activities. Several flavonoids obtained from barley leaves, soybean and some medicinal plants, Silybum marianum, Sophorae Flos, Cinnamon, Ephedrae...
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The 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity of the fruits of Rubus chingii was studied in vitro. Ethanolic extract, ethyl acetate and n-butanol fractions from dried R. chingii fruits revealed strong DPPH free radical scavenging activity with IC(50) values of 17.9, 3.4 and 4.0 μg/mL, respectively. The ethyl acetate and n-butanol fractions were further purified by a ...
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Garcinia xanthochymus has been widely used in traditional Chinese medicine for expelling worms and removing food toxins. Bioassay-guided fractionation of an EtOAc-soluble extract of G. xanthochymus stem bark led to the isolation of six new xanthones. Their structures were elucidated by spectroscopic methods, especially 2D-NMR techniques. Free-radical-scavenging activities of the isolated compou...
متن کاملIsolation and Extraction of Flavonoid from the Leaves of Rauwolfia serpentina and Evaluation of DPPH-scavenging Antioxidant Potential
In the present work, methanolic extract from the leaves of Rauwolfia serpentina were analyzed phytochemically for the presence of flavonoids. Phytochemical studies revealed the presence of flavonoidal structure, by using chromatographic and spectroscopic techniques, 3,5,7,4’tetrahydroxy flavone i.e., Kaempherol is identified. Antioxidant potential was determined by DPPH method.
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ژورنال
عنوان ژورنال: Jurnal Kimia Sains dan Aplikasi
سال: 2018
ISSN: 2597-9914,1410-8917
DOI: 10.14710/jksa.21.4.187-192