Study on antioxidant activity of flavonoids from leaves of Psidium guajava.
10.19540/j.cnki.cjcmm.20180104.013
- Author:
Yu-Jing ZHAO
1
;
Jian-Kuan LI
1
;
Xin ZHANG
1
;
Jian-Ping GAO
1
Author Information
1. College of Pharmacy, Shanxi Medical University, Taiyuan 030001, China.
- Publication Type:Journal Article
- Keywords:
Psidium guajava;
antioxidant;
chemical constituents;
flavonoids
- MeSH:
Antioxidants;
chemistry;
Flavonoids;
chemistry;
Phytochemicals;
analysis;
Plant Leaves;
chemistry;
Psidium;
chemistry;
Quercetin;
chemistry
- From:
China Journal of Chinese Materia Medica
2018;43(4):760-765
- CountryChina
- Language:Chinese
-
Abstract:
The present study is to study the chemical constituents from ethanol extract of Psidium guajava leaves. The constituents were separated and purified by silica gel column chromaiographios over, macroporous resin D-101, Sephadex LH-20, and ODS. Six flavonoids compounds were isolated and identified as quercetin(1), quercetin-3---D-arabinopyranoside(2), quercetin-3---D-ribopyranoside(3), quercetin-3---D-galactopyranoside(4), quercetin-3---D-glucopyranoside(5), and quercetin-3--D-xylpyranoside(6). The antioxidant effects of six flavonoids was evaluated by scavenging ability of DPPH, superoxide anion, ABTS·⁺, and reducing effect of Fe³⁺ as well as total antioxidant capacity(FRAP). Vitamin C was used as positive control. The results indicated that six flavonoids exhibited significant antioxidant effects.
