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http://dx.doi.org/10.9799/ksfan.2013.26.1.029

Optimization of Makgeolli Manufacture Using Several Sweet Potatoes  

Cheon, Ji-Eun (Dept. of Food Science and Biotechnology, Institute of Life Science and Resources, Kyung Hee University)
Baik, Moo-Yeol (Dept. of Food Science and Biotechnology, Institute of Life Science and Resources, Kyung Hee University)
Choi, Sung-Won (Dept. of Food and Culinary Arts, Osan University)
Kim, Chang-Nam (Dept. of Hotel Baking Technology, Hyejeon University)
Kim, Byung-Yong (Dept. of Food Science and Biotechnology, Institute of Life Science and Resources, Kyung Hee University)
Publication Information
The Korean Journal of Food And Nutrition / v.26, no.1, 2013 , pp. 29-34 More about this Journal
Abstract
The objective of this study was to manufacture three kinds of domestic sweet potato Makgeolli using a mixture design and an optimization technique. The effects of four different manufacture methods, such as simultaneous saccharification and fermentation (SSF) with or without malt and separate hydrolysis and fermentation (SHF) with or without malt were determined. The SSF methods of Makgeolli produced higher alcohol content than that of SHF methods. The sensory score was not influenced by different making methods. Fourteen experimental points were selected, and rice (10~50%), sweet potato (10~50%) and water (40~60%) were chosen as independent variables. The measured responses were sensory preference, total polyphenol content, and DPPH radical scavenging activities. The ratio of the optimum sweet potato Makgeolli mixture formulation was developed as 15.11 (rice): 44.89 (sweet potato): 40 (water) using the optimization technique. The desirability of the optimum mixture formulation was 0.839. Yellow sweet potato Makgeolli using the optimum mixture formulation produced higher soluble sugar content compared to others. Regular sweet potato Makgeolli produced higher pH. The purple sweet potato Makgeolli's total polyphenol content and DPPH radical scavenging activity were measured to be the highest at $771.91{\pm}1.42mg\;GAE/{\ell}$, $131.55{\pm}4.03%$.
Keywords
sweet potato; Makgeolli; alcohol fermentation; DPPH; mixture design;
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Times Cited By KSCI : 12  (Citation Analysis)
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