Abstract

A transamidification reaction was utilised to obtain low molecular weight peptides by reacting waste skin trimmings protein with monoethanolamine (MEA). In sample, equal equivalent of protein and MBA were used, whereas in sample II, two equivalents of protein were reacted with one equivalent of MBA. The viscosity data for both samples were analysed in terms of the Einstein and Simha-Einstein equations. Hydration volume V_h, number average molecular weight M_n and intrinsic viscosity [η] of sample II is greater than that of sample I, irrespective of temperature. Hydrodynamic results suggest that the shape of the transamidified peptide particle in solution is spherical. The results also suggest that MBA is effective in breaking the hide trimmings protein structure upon transamidification where protein content is comparatively less. Thermodynamic parameters were calculated from Eyring and Gibb’s equations. The results suggest that MBA is more effective in the ordering of the water structure in sample II than that for sample I.