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KMID : 1011620110270040001
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Korean Journal of Food and Cookey Science
2011 Volume.27 No. 4 p.1 ~ p.16
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Quality Characteristics of Bread with Various Concentrations of Purple Sweet Potato
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이순목:Lee Soon-Mok
박금순:Park Geum-Soon
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Abstract
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The purpose of this study was to investigate the physicochemical and sensory properties of various breads prepared with purple-fleshed sweet potatoes and their powders. As the amount of purple-fleshed sweet potato and its powder increased, pH of the dough and bread, volume, dough yield, baking loss rate, and fermentation power of the dough decreased, whereas acidity of the bread increased. The lightness and yellowness of the breads decreased significantly, but redness increased with increasing content of purple-fleshed sweet potato and its powder. The textural properties, such as hardness, chewiness, springiness, and brittleness were significantly higher in groups with added purple-fleshed sweet potato and its powder compared to those in the control. The anthocyanin content and DPPH radical scavenging of dough and bread were higher in groups with purple-fleshed sweet potato and its powder than those in the control group. The groups with 5% and 10% purple-fleshed sweet potatoes and their powders had significantly higher scores for overall acceptability as compared to the control group.
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KEYWORD
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purple-fleshed sweet potato, bread, quality characteristics
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