11. Other foods in this group contain antioxidant flavonoids like quercetin and kaempferol. 12. Tea is a major source of flavonoids in American diets. 13. Flavonoid content is expressed in mg / g of quercetin.14. They are also good sources of vitamin C and flavonoids . 15. Flavonoids are of questionable benefit, with potential side effects.16. Some antioxidants include phenolic acids, flavonoids , proanthocyanidins, and anthocyanin. 17. Consumer testimonials claim that Lipo-flavonoid relieves the symptoms of tinnitus. 18. Flavonoid crystals were observed in both the roots and leaves.19. Chemical substances in this species include saponins, flavonoids , and glucosinolates. 20. Isoflavonoids are derived from the flavonoid biosynthesis pathway via liquiritigenin or naringenin.
