Lyopholized carrot powder (0.50 g) was mixed with 10 mL of the indicated solvent in a glass vial. The mixtures were vortexed for 20 min, and clarified by centrifugation. For dichloromethane extract, centrifugation was not effective at sedimenting unextracted solids, and an additional syringe filtration step was performed. The extracts were stored at -20 °C for 1 week. Acetone and THF were of HPLC grade; other solvents were of ACS Reagent grade.