Effect of drying temperature and relative humidity on the color, solubility and mechanical properties of two types of soy protein films

DENAVI G.; TAPIA BLACIDO D; MAURI A.N; SOBRAL P; AÑÓN M.C; MENEGALLI F

Budapest, Hungria

Simposio; 15th International Drying Symposium - IDS 2006; 2006

The influence of drying conditions (air temperature and relative humidity) on mechanical properties, solubility in water, and colour of soy protein films was studied. Two kinds of soy protein isolate were used: a commercial one (CSPI) and other obtained at laboratorial conditions (LSPI). It was verified that film properties of the LSPI and CSPI are influenced in a very different way by the drying conditions. DSC studies verified that the very different behaviour in relation of drying conditions must be due to a diverse initial protein conformation in both materials