Journal
JOURNAL OF CEREAL SCIENCE
Volume 76, Issue -, Pages 173-178Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jcs.2017.05.009
Keywords
Flaxseed; Iranian toast bread; Staling; Phenolic compounds
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Effect of adding flaxseed flour (10%, 20% and 30% w/w) to wheat flour on rheological properties of dough, including water absorption, stability and development time, extensibility and resistance to extension, was studied at 45, 90 and 135 min proving time. Qualitative properties of toast regarding staling (after 24 and 72 h) were determined. Phenolic compounds, peroxide values, sensory characteristics and color indices of the breads were evaluated. The results indicated that water absorption and development time increased as the proportion of flaxseed increased in dough. Stability decreased with the increment of flax flour compared to control sample (100% wheat flour). Extensibility and resistance to extension of flaxseed samples respectively decreased and increased comparing to those of control sample. Staling in toast with 20% flaxseed flour was seen to be lower than that of the control. Adding flax flour caused phenolic compounds to increase, however it decreased peroxide value. Bread color parameters L and a reduced by adding flax flour, while parameter b did not show significant different compared to the control (p < 0.05). Results of sensory evaluation indicated that brightness of the toasts decreased with increasing flaxseed flour and that 30% flaxseed toast had the lowest score for overall acceptability. (C) 2017 Elsevier Ltd. All rights reserved.
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