Structural characterization and antioxidant and anti-inflammatory activities of new chemical constituent from the seeds of bambara groundnut (<i>Vigna subterranea</i> (L.) Verdc.)

A new compound (C20H18O9) was isolated from bambara groundnut seeds (Vigna subterranea (L.) Verdc.) and identified as a luteolin glycoside based on 1H, 13C 2D nuclear magnetic resonance spectroscopy data previously reported data. This exhibited similar scavenging activity for DPPH radical to Trolox had higher inhibitory effect superoxide anion radicals than gallic acid Trolox. C20H18O9 an radicals, with IC50 values of 2.25 ± 0.14 µg/mL 9.8 0.3 µg/mL, respectively. However, displayed low activities FRAP metal chelation. lipoxygenase (IC50 = 2.16 µg/mL) nordihydroguaiaretic but lower xanthine oxidase allopurinol. These results indicate that can be natural sources antioxidants humans serve inhibitor reduce inflammation.