*2.1. Materials*

Human serum albumin (HSA), methylglyoxal (MG), nitro blue tetrazolium (NBT), 2,4-Dinitrophenylhydrazine (DNPH), caffeic acid, p-coumaric acid and porcine pancreatic α-amylase were purchased from Sigma-Aldrich, Milwaukee, WI, USA. All other chemicals, unless stated otherwise, were high grade and purchased from local vendors. All the blanks were run replicating the same conditions and acted as a control. All the buffers were filtered before use.
