Starch-stearic Acid Complex Development within Single and Twin Screw Extruders
| Autor: | Sandeep Bhatnagar, Milford A. Hanna |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
musculoskeletal diseases
Polarized light microscopy Materials science business.product_category Starch Plastics extrusion food and beverages musculoskeletal system equipment and supplies chemistry.chemical_compound Crystallography Starch gelatinization surgical procedures operative chemistry Die (manufacturing) Extrusion Stearic acid Composite material business Corn starch Food Science |
| Zdroj: | Journal of Food Science. 61:778-782 |
| ISSN: | 1750-3841 0022-1147 |
| Popis: | Corn starch was extruded with 4% stearic acid in Brabender single screw and twin screw laboratory extruders. The screws were cooled and removed and samples were collected from locations along the screws. In the single screw extruder, starch gelatinization as determined by DSC and polarized light microscopy started in the compression zone and was completed in the metering zone. Starch-stearic acid complex formation as determined by iodine binding capacity and X-ray diffraction started at the same point as gelatinization and increased to a maximum near the tip of the screw. In the twin screw extruder, starch gelatinization and starch-stearic acid complex formation started at a distance of seven screw diameters and continued from there to the die end. |
| Databáze: | OpenAIRE |
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