Flavonols in fresh and processed Brazilian fruits

Flavonols (myricetin, quercetin and kaempferol) and flavones (luteolin and apigenin) were determined in Brazilian fruits, using a previously optimized and validated HPLC method. The flavonoids investigated were not detected in three cultivars each of mango and papaya. Quercetin was found in all the other fruits, the mean values varying from 0.3 mg/100 g in orange cultivar Pêra to 7.5 mg/100 g in apple cultivar Fuji. Kaempferol was encountered in strawberry (0.7–0.9 mg/100 g), acerola (0.9–1.2 mg/100 g), pitanga (0.4 mg/100 g) and cashew-apple (