Antioxidant activities of bee products and trolox towards production of various ROS (H
) in term of fluorescence intensity. (A-C) Bee pollen. (D-F) Royal jelly (RJ). (G-I) Trolox (a derivative of α-tocopherol). Integrals of ROS production were calculated from time-kinetics curves. ROS were (A, D, G) H2O2, (B, E, H) O2
·-, (C, F, I) HO·. Data are shown as mean ± S.E.M., n = 6. **P < 0.01 vs. vehicle plus ROS. V: vehicle.