Materials and Methods Chemicals The 2,2-Diphenyl-1-picrylhydrazyl (DPPH) and trolox were purchased from Sigma-Aldrich (St. Louis, MO). All other reagents and solvents used were of analytical grade.
Materials and MethodsChemicalsThe 2,2-Diphenyl-1-picrylhydrazyl (DPPH)and trolox were purchased from Sigma-Aldrich (St.Louis, MO). All other reagents and solvents usedwere of analytical grade.