Using reverse-phase high performance liquid chromatography (RP-HPLC), the abundances of lawsone, quercetin, MNQ, and kaempferol were measured in HAEIBS (Figure 2) and were 19.32, 2.87, 31.15, and 64.98 mg/g, respectively (Table 1).
Of the 4 compounds isolated from HAEIBS, quercetin and kaempferol on nematodes have also been examined by our group.
Zurawski et al., "Effects of the flavonoids kaempferol and fisetin on thermotolerance, oxidative stress and FoxO transcription factor DAF16 in the model organism Caenorhabditis elegans," Archives of Toxicology, vol.
A: lawsone, B: quercetin, C: MNQ, and D: kaempferol.
In our present investigation, the flavonoids, quercetin, quercetin-3-O-[beta]-glucoside, quercetin-3-O-[beta]-galactoside, quercetin-3-O-rutinose and kaempferol, showed strong DPPH radical-scavenging activities.
Park JC, Choi JS, Yu YB, Lee JH (2000b) Effect of methanol extract and kaempferol glycosides from Armoracia rusticana on the formation of lipid peroxide in bromobenzene-treated rats in vitro.