Chemicals
L(+)-ascorbic acid (AA) was purchased from National Chemicals
Pvt. Ltd. India. 2,2-Diphenyl-1-picrylhydrazyl (DPPH), nitroblue
tetrazolium (NBT), phenazine methosulphate (PMS) were
purchased from Sigma Aldrich (India). All other common chemicals
and organic solvents were purchased from Merck.