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• W2181771433 abstract "2 Abstract: Terminalia arjuna, a well-known medicinal plant has extensively been used in Ayurvedic medicines to treat various diseases. The present study was investigated the phenolic content and antioxidant activity of 70% acetone extract of Terminalia arjuna and to isolate and identify its certain phenolic constituents as well as assessment the antioxidant potential of purified compounds via two qualitative in vitro antioxidant assays (1,1'-diphenyl-2-picrylhydrazyl) free radical scavenging (DPPH) and phosphomolybdenum as wall as total phenolic content was determined via Folin-Ciocalteu assay. Owing to the high antioxidant of the 70% acetone extract it undergoes successive fractionation via; diethyl ether, petroleum ether, CH Cl , EtOAc and n-BuOH. 22 n-BuOH sub-fraction undergoes chromatographic separation upon polyamide CC. to afforded three compounds (1-3), their structures were established via UV, IR, H and C-NMR analyses and identified as; gallic acid (1), 1 13 methyl gallate (2) and ellagic acid (3). Also, EtOAc sub-fraction undergoes chromatographic separation upon silica gel CC. to afforded one compound, identified as; vanillic acid (4). The DPPH results for all tested fractions was ranged from 9.06 to 132.54 µg/ml and for the four isolated compounds showed DPPH scavenging activity with SC values of 6.0, 7.06, 6.38 and 7.87 µg/ml, respectively for compounds 1, 2, 3 and 4 and total antioxidant 50" @default.
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• W2181771433 date "2013-01-01" @default.
• W2181771433 modified "2023-09-26" @default.
• W2181771433 title "Chemical Investigation and Antioxidant Activity of Phenolic Acids from the Leaves of Terminalia arjuna" @default.
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