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Dynamic Rheological and Thermal Properties of Soft Wheat Flour Dough Containing Structured Lipid
Author(s) -
Agyare K.K.,
Xiong Y.L.,
Addo K.,
Akoh C.C.
Publication year - 2004
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.2004.tb13633.x
Subject(s) - differential scanning calorimetry , rheology , dynamic mechanical analysis , starch gelatinization , starch , viscoelasticity , dynamic modulus , food science , endothermic process , canola , materials science , chemistry , composite material , polymer , thermodynamics , organic chemistry , physics , adsorption
The effect of substituting canola oil/caprylic acid structured lipid for shortening (at 0%, 25%, 50%, 75%, and 100% levels) on the viscoelastic and thermal properties of soft wheat flour dough (28.4% total lipid, 43% moisture) was determined using dynamic rheological and differential scanning calorimetry tests. Ambient frequency scans produced higher G″ (loss modulus) and G′ (storage modulus) values at increasing frequencies. Temperature scans revealed rapid G″ and G′ increases for dough heated to above 56 °C, apparently because of starch gelatinization. Three differential scanning calorimetry endothermic peaks were observed at 54 °C, 69 °C, and 93 °C, which were attributed to shortening transition and gelatinization of starch granules.