Preventive Nutrition and Food Science

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Optimization of Jelly Made with Rubus coreanus (Bokbunja) Using Response Surface Methodology

  • Joo, Na-Mi (Department of Food & Nutrition, Sookmyung Women's University) ;
  • Lee, Sun-Mee (Department of Food & Nutrition, Sookmyung Women's University) ;
  • Jeong, Hee-Sun (Graduate School of Professional Studies Traditional Culture and Arts, Sookmyung Women's University)
  • Published : 2009.06.30
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Abstract

The purpose of this study was to find new applications for Rubus coreanus and to produce new products. Jelly prepared with Rubus coreanus was studied and analyzed with regard to its composition, rheology and sensory evaluation. The technique of response surface methodology was used to analyze the results, which showed 16 experimental points including 2 replicates for Rubus coreanus juice, gelatin and sucrose. Rheological characteristics such as lightness, redness, yellowness and hardness, springness, chewiness and gumminess were shown to be significant, and these were mostly influenced by the content of Rubus coreanus juice. Significant sensory characteristics such as color, flavor, transparency, taste and the overall quality were also found to be greatly influenced by Rubus coreanus juice and gelatin in general. Based on the overlapping categories of factors that satisfied all sensory categories, the maximally optimized point was taken as the middle point. This value was determined to be 43.28 g of Rubus coreanus juice and 9.19 g of gelatin for every 140.00 g of sucrose.

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References

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