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KMID : 0665420100250010082
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Korean Journal of Food Culture
2010 Volume.25 No. 1 p.82 ~ p.90
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Effect of Fermented Rice Bran on Rheological Properties of White Bread Dough
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Park Hyun-Sil
Han Gi-Dong
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Abstract
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In this study, the rheological properties of doughs blended with 5% to 20% fermented rice bran (FRB) were investigated using farinographs, amylographs, extensographs, and SEM. In the farinograph analysis, the water absorption decreased and the replacement ratio of FRB increased over the time of development of the dough. The stability time of the dough was shortened, and the degree of softening decreased with added volume of FRB. The amylograph analysis showed that the temperature at the beginning of gelatinization showed a tendency to increase with increasing replacement ratio of FRB, but the gelatinization temperature showed no significant difference between the FRB-added groups and control group. The extensograph analysis showed that when the replacement ratio of FRB was over 10%, the extension of the dough decreased while the resistance was increased. In the SEM analysis, the added dough with less than 10% FRB had similar characteristics in gluten matrix and gas bubbles to those of the control of wheat flour alone. It was concluded that an added FRB volume of below 10% is most suitable for bread making.
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KEYWORD
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Fermented rice bran, Rheological property, Bread dough, SEM
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