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Antioxidant Activities and Chemical Constituents of Flavonoids from the Flower of Paeonia ostii.

Authors :
Huifang Zhang
Xiaofang Li
Ke Wu
Mengke Wang
Pu Liu
Xinsheng Wang
Ruixue Deng
Source :
Molecules; Jan2017, Vol. 22 Issue 1, p5, 15p, 4 Charts, 3 Graphs
Publication Year :
2017

Abstract

Paeonia ostii is a traditional medicinal plant popularly used in China. This study intended to evaluate the antioxidant properties and the chemical components of the flavonoid-rich extracts from the flowers of P. ostii. The results showed that the flavonoid-rich extracts from the flowers of P. ostii had strong scavenging capacities on 2,2′-Azinobis-(3-ethylbenzthiazoline-6-sulphonate) (ABTS), hydroxyls, superoxide anions, and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals in a dose-dependent manner. Five flavonoids, dihydrokaempferol (1), apigenin-7-O-β-D-glucoside (2), apigenin-7-O-β-D-neohesperidoside (3), kaempferol-7-O-β-D-glucopyranoside (4), and kaempferol- 3-O-β-D-glucopyranosyl-7-O-β-D-glucopyranoside (5), were isolated from the flavonoid-rich extracts of the flowers of P. ostii. High-performance liquid chromatography (HPLC) analysis revealed that compounds 3 and 4 were abundant in the P. ostii flower and in flavonoid-rich extracts. The main components of the flower of P. ostii are flavonoids. The high antioxidant activity of the flavonoid-rich extracts may be attributed to the high content of flavonoids. The five isolated flavonoids were the primary antioxidant ingredients, and may play important roles in the strong antioxidant activities of this flower. Based on the obtained results, the flower of P. ostii could be a potential source of natural antioxidants in food and pharmaceutical applications. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14203049
Volume :
22
Issue :
1
Database :
Complementary Index
Journal :
Molecules
Publication Type :
Academic Journal
Accession number :
120696468
Full Text :
https://doi.org/10.3390/molecules22010005