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http://dx.doi.org/10.3746/jkfn.2008.37.11.1479

Quality Characteristics of Defatted Soybean Grits Fermented by Bacillus subtilis NUC1  

Kim, Hyun-Jeong (The Center for Traditional Microorganism Resources, Keimyung University)
Lee, Sung-Gyu (Dept. of Food and Technology, Keimyung University)
Ji, Young-Ju (Dept. of Food and Technology, Keimyung University)
HwangBo, Mi-Hyang (Dept. of Food and Technology, Keimyung University)
Lee, Eun-Ju (Bio Research Institute, NUC Electronics Co., Ltd.)
Lee, Sam-Pin (The Center for Traditional Microorganism Resources, Keimyung University)
Lee, In-Seon (The Center for Traditional Microorganism Resources, Keimyung University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.37, no.11, 2008 , pp. 1479-1484 More about this Journal
Abstract
This study was conducted to investigate the quality characteristics of fermented-defatted soybean grits (DSG). Fermented-DSG was prepared by inoculating Bacillus subtilis NUCI into steamed DSG at 2% (v/w) concentration and fermenting at $40^{\circ}C$ for 24 hr. The protein contents of DSG and fermented-DSG were higher by $57.2{\sim}61.0%$ than those of Chungkukjang, but lipid contents of these samples were not detected. The protease and $\alpha$-amylase activities, and solid contents in DSG were not shown. However, the activities of protease and $\alpha$-amylase, tyrosine contents, fluid consistency, and viscous substance contents of fermented-DSG were higher than those of Chungkukjang. The levels of free amino acids and isoflavone of fermented-DSG tended to increase more than those of DSG. The sensory score of fermented-DSG were higher in odor and taste than those of Chungkukjang groups, while lower in color and overall acceptability.
Keywords
defatted soybean grits; Chungkukjang; Bacillus subtilis;
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