Glass transition temperature of thermoplastic starches
 
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Food Process Engineering Department, University of Agriculture, Doświadczalna 44, 20-236 Lublin, Poland
 
Int. Agrophys. 2005, 19(3): 237–241
 
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ABSTRACT
Thermoplastic starch was produced by mixing potato starch and glycerol in a single screw extruder. The glass transition temperatures of the materials obtained were measured by differential scanning calorimetry (DSC). Both the influence of extruder parameters and material parameters, such as moisture and glycerol content and amyloses/amylopectine ratio were investigated. Repeated extrusion cycles affect the glass transition temperature only to a very small extent.
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