DRYING KINETIC OF FOAMAT DRYING COMBINED WITH AIR DEHUMIDIFIED FOR CARRAGEENAN DRYING

Abstract

This research concerns to study the kinetic of foam mat drying combined with air dehumidified for carrageenan drying in different operational temperature, thickness, and composition of foam agent and foam stabilizer. The result of the experiment showed that drying of foamed materials gave better textural properties of the final product than non-foamed ones. Dehumidified air combined with extensive porous structure and lower densities of foams which operated at 80 °C, 4 mm foam thickness, with using egg white (20%) as foaming agent and methyl cellulose (10%) as stabilizing agent has reduced drying time 70 min than non-foamed ones. Based on the experiment, the drying of carrageenan recomended to operate at 80 °C, 2 mm foam thickness, with using egg white (20%) as foaming agent and methyl cellulose (10%) as stabilizing agent. It has indicated shorter drying time and higher drying rates.