Optimization of Iced Cookie with Dried Lotus Root Powder Using Response Surface Methodology

  • Song, Yun-Hee (Department of Food & Nutrition, Sookmyung Women's University) ;
  • Lee, Ji-Hee (Department of Food & Nutrition, Sookmyung Women's University) ;
  • Jeong, Hui-Seon (Department of Food & Nutrition, Sookmyung Women's University) ;
  • Park, Sang-Hyun (Department of Food & Nutrition, Sookmyung Women's University) ;
  • Jung, Hyeon-A (Department of Herbal Cuisine & Nutrition, Daegu Haany University) ;
  • Joo, Na-Mi (Department of Food & Nutrition, Sookmyung Women's University)
  • Published : 2008.12.31


This study was conducted to develop a recipe for a nutritional cookie with lotus root powder that had the optimal composition of ingredients and texture resulting in high preference by all age groups. Wheat flour was partially substituted with lotus root powder to reduce its content. Response Surface Methodology was used to analyze the measured results, which showed 16 experimental points including 2 replicates for lotus root powder, sugar and butter. The compositional and functional properties were measured, and these values were applied to a mathematical model. A canonical form and perturbation plot showed the influence of each ingredient on the final mixture product. The sensory evaluation results showed significant values in color (p<0.01), texture (p<0.05) and overall quality (p<0.05). As a result, the optimal sensory ratio was determined to be 22.59 g of lotus root powder, and 53.08 g of sugar for every 120 g of butter.


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