Comparison of Scavenging ·OH, O2- and H2O2 by the Aqueous Extraction from Various Organs of Fagopyrum megaspartanium

Abstract:

The capacity of scavenging ·OH, ·O2- and H2O2 of aqueous extractions from five organs(root, aerial stem, leaf, flower and seed) of Fagopyrum megaspartanium was studied by means of nitro blue terra-zolium photochemica reduction, Fenton reaction and spectrophotometric assay. The results showed that the aqueous extractions had the capacity of scavenging ·OH, ·O2- and H2O2. The capacity of scavenging ·OH and·O2- were sorted as: root, flower＞leaf, seed＞aerial stem. The capacity of scavenging H2O2 was sorted as: leaf, flower＞root, seed and aerial stem.