Effect of Processing Conditions on Microstructure and Pasting Properties of Extrusion-Cooked Starches
Abstract
The aim of the work was to investigate the effect of extrusion-cooking process conditions on the structure and pasting properties of starch extrudates. In addition, the extrudates structure was observed using scanning electron microscopy (SEM) and confocal laser microscopy (CSLM). Wheat, corn and potato starch were extrusion-cooked with different process parameters (moisture content, screw speed, process temperature) in a single screw extruder. Results showed influence of the process parameters on extruded starches pasting properties. Viscosity measurements indicated that water content during starch extrusion is more important than process temperature. The extrudates structure observed with scanning electron and confocal laser microscopes showed that the main effect of extrusion-cooking was loss of the crystalline structure of the starch and the formation of a cellular structure of the extrudates. In extrudates processed at higher starch moisture content reduced the quantity and diameters of created cells was observed.
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Artikel in diesem Heft
- Editorial
- V Food Engineering Symposium (Warsaw, Poland)
- Research Articles
- Changes of Mechanical and Thermal Properties of Cranberries Subjected to Ultrasound Treatment
- Effect of Vacuum Impregnation on Drying Kinetics and Selected Quality Factors of Apple Cubes
- The Influence of Selected Drying Methods on the Physical Properties of Dried Apples cv. Jonagold Grown in Different Locations in Europe
- The Effectiveness of Vacuum-microwave Drying Methods in the Preservation of Amelanchier Berries (Amelanchier canadensis L. Medik.)
- The Functional Properties of Chokeberry and Kale Powders Obtained by an Innovative Method of Fluidised-Bed Jet Milling with Drying Compared to Freeze Drying
- Diastase Activity Retention and Physical Properties of Honey/Arabic Gum Mixtures After Spray Drying and Storage
- Effect of Processing Conditions on Microstructure and Pasting Properties of Extrusion-Cooked Starches
- Research on Particles’ Velocity Distribution in a Whirlpool Separator Using the PIV Method of Measurement
- Application of Nephelometry to Automatic Control of Cleaning Time during Cleaning Process in Clean in Place System
Artikel in diesem Heft
- Editorial
- V Food Engineering Symposium (Warsaw, Poland)
- Research Articles
- Changes of Mechanical and Thermal Properties of Cranberries Subjected to Ultrasound Treatment
- Effect of Vacuum Impregnation on Drying Kinetics and Selected Quality Factors of Apple Cubes
- The Influence of Selected Drying Methods on the Physical Properties of Dried Apples cv. Jonagold Grown in Different Locations in Europe
- The Effectiveness of Vacuum-microwave Drying Methods in the Preservation of Amelanchier Berries (Amelanchier canadensis L. Medik.)
- The Functional Properties of Chokeberry and Kale Powders Obtained by an Innovative Method of Fluidised-Bed Jet Milling with Drying Compared to Freeze Drying
- Diastase Activity Retention and Physical Properties of Honey/Arabic Gum Mixtures After Spray Drying and Storage
- Effect of Processing Conditions on Microstructure and Pasting Properties of Extrusion-Cooked Starches
- Research on Particles’ Velocity Distribution in a Whirlpool Separator Using the PIV Method of Measurement
- Application of Nephelometry to Automatic Control of Cleaning Time during Cleaning Process in Clean in Place System