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Effect of dough ingredients on apparent viscosity and properties of extrudates in twin‐screw extrusion‐cooking
Author(s) -
WANG S.,
CASULLI J.,
BOUVIER J.M.
Publication year - 1993
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/j.1365-2621.1993.tb01296.x
Subject(s) - rheology , extrusion , viscometer , viscosity , food science , plastics extrusion , chemistry , materials science , composite material
Summary A capillary‐type viscometer was used in a twin‐screw extruder to measure the apparent viscosity of cooked‐extruded wheat‐flour dough with various ingredients: lecithin, palm oil, sucrose, whey, sodium chloride, and bran. the effects of concentration of these ingredients on dough rheology and physical properties of extrudates (apparent density, expansion ratios, mechanical, and crispness properties) were measured. the role of ingredients was discussed in terms of their physico‐chemical effect on biopolymer conversion. the correlations between apparent viscosity of dough and physical properties of extrudates were developed.