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 inBIO web of conferences Vol. 58; p. 3004
Main Authors Chalamov, Yanush, Simitchiev, Apostol, Nenov, Ventzislav, Vassilev, Kiril
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 01.01.2023
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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.
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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