Thermal analysis of peptides with a calorimeterchip

In this paper we describe a simple method to measure the thermal conductivity and thermal diffusivity of three related biochemicals: an amino acid, a peptide and a protein in aqueous solution using a liquid calorimeter chip. The measurements are performed by applying an AC voltage to an integrated heater at 10 mHz and 1 Hz and measuring the output voltage of the thermopile. The biochemicals solution tested included: L-lysine dissolved in water at different concentrations (50; 10; 1; 0.1 wt%); alpha-mating factor dissolved in water at 0.1 wt% and the bovine serum albumin (BSA) at 1 wt%.