Investigation of selected independent variables on extrusion of rice semolina with and without propeller
The influence of screws with and without propeller, as well as the independent variables of material moisture content, working screw speed, feeding screw speed and die temperature on the changes of some physical and mechanical properties during singles-screw extrusion of rice semolina was studied. T...
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Published in | BIO web of conferences Vol. 58; p. 3004 |
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Main Authors | , , , |
Format | Journal Article Conference Proceeding |
Language | English |
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Abstract | The influence of screws with and without propeller, as well as the independent variables of material moisture content, working screw speed, feeding screw speed and die temperature on the changes of some physical and mechanical properties during singles-screw extrusion of rice semolina was studied. The response surface methodology was used with an orthogonal central composite design. Optimum modes of operation which lead to the maximization of the mass flow rate and the sectional expansion index and the minimization of the specific mechanical energy were established. The obtained results show that the use of a propeller in single-screw extrusion leads to an increase in extruder mass flow rate, a decrease in the specific mechanical energy and an increase in the sectional expansion index. |
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AbstractList | The influence of screws with and without propeller, as well as the independent variables of material moisture content, working screw speed, feeding screw speed and die temperature on the changes of some physical and mechanical properties during singles-screw extrusion of rice semolina was studied. The response surface methodology was used with an orthogonal central composite design. Optimum modes of operation which lead to the maximization of the mass flow rate and the sectional expansion index and the minimization of the specific mechanical energy were established. The obtained results show that the use of a propeller in single-screw extrusion leads to an increase in extruder mass flow rate, a decrease in the specific mechanical energy and an increase in the sectional expansion index. |
Author | Simitchiev, Apostol Chalamov, Yanush Nenov, Ventzislav Vassilev, Kiril |
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Cites_doi | 10.3390/polym11122106 10.2478/ntpe-2018-0067 10.1016/j.foodchem.2012.01.087 |
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SubjectTerms | Extrusion rate Flow rates Independent variables Mass flow rate Mechanical properties Moisture content Moisture effects Optimization Physical properties Response surface methodology Water content |
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Title | Investigation of selected independent variables on extrusion of rice semolina with and without propeller |
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