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http://dx.doi.org/10.3746/jkfn.2008.37.7.914

Quality Characteristics of Hard Roll Bread with Concentrated Sweet Pumpkin Powder  

Lee, Chan-Ho (Dept. of Food and Nutrition, Sunchon National University)
Chun, Soon-Sil (Dept. of Food and Nutrition, Sunchon National University)
Kim, Mun-Yong (Dept. of Food and Nutrition, Sunchon National University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.37, no.7, 2008 , pp. 914-920 More about this Journal
Abstract
In this study, hard roll breads were prepared with 3, 6, 9, 12, and 15% of concentrated sweet pumpkin powder (CSPP). The samples and a control were then compared in terms of quality characteristics, including pH, total titratable acidity, fermentation power of dough expansion, specific volume, baking loss, moisture content, color, textural characteristics, external and internal surface appearances, and sensory qualities of bread in order to determine the optimal ratio of CSPP in the formulation. As CSPP content increased, pH of dough, specific volume, baking loss, and lightness of bread decreased, while total titratable acidity of dough, pH, total titratable acidity, moisture content, and redness of bread increased. Fermentation power of dough expansion increased as incubation time increased. The CSPP samples had significantly higher yellowness, hardness, cohesiveness, gumminess, chewiness, and resilience than the control group. Adhesiveness was the highest at the 12% substitution level, while the lowest at the 6% level. Springiness increased with increasing CSPP content. In the sensory evaluation, as CSPP content increased, scores for color and consistency of crumb decreased, while scores for aroma of sweet pumpkin, sweetness, and delicious taste increased. Density of crumb pore were maximal with the 12% CSPP substitution. The CSPP samples had significantly higher uniformity of crumb pore and springiness of crumb than the control group. However, mouth-feel and overall acceptability showed the reverse effect, obtaining fairly good scores. In conclusion, the results indicate that substituting $6{\sim}9%$ CSPP to hard roll bread is optimal, providing good physiological properties as well as reasonably high overall acceptability.
Keywords
hard roll; sweet pumpkin powder; dough expansion; texture; sensory;
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Times Cited By KSCI : 6  (Citation Analysis)
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