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Free radical-scavenging activity and flavonoid contents of Polygonum orientale leaf, stem, and seed extracts
BibTeX
@MISC{Jiang_freeradical-scavenging,
author = {Xinyu Jiang and Xiaoqing Chen and Yan Wei},
title = {Free radical-scavenging activity and flavonoid contents of Polygonum orientale leaf, stem, and seed extracts},
year = {}
}
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Abstract
Abstract — The present study was designed to explore the total flavonoid and taxifolin contents and the radical-scavenging activity of 50 % ethanol extracts of Polygonum orientale leaves, stems, and seeds by 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. The extract with higher total flavonoid content has higher radical scavenging activity. Taxifolin (IC 50 = 2.83 µmol/L) has antioxidant activity stronger than that of rutin (IC 50 = 3.08 µmol/L). The free radical-scavenging potentials of chloroform, ethyl acetate, water, ethanol, and methanol extracts of Polygonum orientale seeds were also investigated. The free radical-scavenging abilities of various extracts were determined as: methanol> ethanol> water> ethyl acetate> chloroform.
Keyphrases
polygonum orientale leaf free radical-scavenging activity seed extract flavonoid content free radical-scavenging potential present study methanol extract total flavonoid content radical-scavenging activity ethyl acetate various extract radical scavenging activity water ethyl acetate chloroform free radical-scavenging ability polygonum orientale seed ethanol extract antioxidant activity taxifolin content total flavonoid
