| Autor: |
Llopart, Emilce Elina, Drago, Silvina Rosa, De Greef, Dardo Mario, Torres, Roberto Luis, González, Rolando José |
| Zdroj: |
International Journal of Food Sciences & Nutrition; Feb2014, Vol. 65 Issue 1, p34-41, 8p |
| Abstrakt: |
In order to analyze the effects of extrusion temperature (T: 164, 182, 200 °C) and grits moisture content (g/100 g sample) (%M: 14, 16.5, 19) on textural and physicochemical properties of red sorghum extrudates, whole grain flour was extruded according to a factorial experimental design. The higher values for specific mechanical energy consumption (1006.98 J/g) and expansion (3.36) were obtained at 164 °C-14%M and for sensorial hardness at 164 °C-19%M. While for specific volume, the highest value (10.41 cm³/g) was obtained at 200 °C-14%M. Water solubility and water absorption were directly related with T and inversely with M. Microscopic observation of the samples indicates that the greatest cooking degree was obtained at 200 °C-4%M and the lowest at 164 °C-19%M. Extrusion at 182 °C-14%M allows obtaining an expanded product with good properties. Proximal composition did not show statistically significant differences with raw sample. Extruded sample showed a 25.4% reduction of available lysine and a 31% increase in protein digestibility. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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