Sample Chitosan Sodium Alginate Enthalpy Enthalpy Value (J/kg) % change Value (J/kg) % change Control 1490 - 130.93 - T1 68.81 -95.38 499.92 281.82 T2 1370 -8.05 272.69 108.27

Table 4: Enthalpy change in control and treated chitosan and sodium alginate.