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Effect of processing conditions on selected properties of starchbased biopolymers
Process management of biopolymers is very important according to processing conditions and stability. This paper presents the results of the extrusion-cooking of thermoplastic corn starch enriched with fillers in the form of flax fibers, using the modified single screw extrusion-cooker TS-45 (Polish design) with L/D = 16 and an additional cooling section of the barrel. Discussed are the influence of the screw speed and the quantity of the filler used in the blends containing 20% of glycerol (plasticizer) on the processing efficiency, process stability, energy consumption, radial expansion index during the extrusioncooking process of thermoplastic starch (TPS).
Keywords: extrusion-cooking; breakfast cereals; wholegrain wheat; physical properties; texture, sensory.
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