Effect of Extrusion Conditions on Expansion Behavior and Selected Physical Characteristics of Cornstarch Extrudates
| Autor: | Girish M. Ganjyal, Pawan S. Takhar, Milford A. Hanna, Srivikorn Ditudompo |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Moisture Plastics extrusion Biomedical Engineering Dry basis Soil Science Forestry 04 agricultural and veterinary sciences Barrel (unit) 040401 food science Expansion ratio 0404 agricultural biotechnology Extrusion Composite material Porosity Agronomy and Crop Science Water content Food Science |
| Zdroj: | Transactions of the ASABE. 59:969-983 |
| ISSN: | 2151-0040 2151-0032 |
| Popis: | Three response parameters (apparent density, porosity, and expansion ratio) were examined for investigating the expansion characteristics of cornstarch as a function of extrusion conditions. Cornstarch with moisture contents of 18.3%, 26.1%, and 34.8% (dry basis) were extrusion cooked in a twin-screw extruder at barrel temperatures of 120°C and 140°C and screw speeds of 200, 300, and 400 rpm. Results indicated that feed moisture content, barrel temperature, and screw speed had significant effects on the density, porosity, and expansion ratio of extruded cornstarch products (p 2 ≥ 0.87 and 0.85, respectively). Moreover, the moisture content and surface temperature of the extruded products were influenced by extrusion conditions. Lowering the feed moisture content and increasing the barrel temperature and screw speed caused a lower moisture content and higher surface temperature of the cornstarch extrudates (p |
| Databáze: | OpenAIRE |
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