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KMID : 0903519810240030200
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
1981 Volume.24 No. 3 p.200 ~ p.205
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A Study on the Color Change of Soysauce
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Abstract
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Some chemical components, absorbance at 450㎚ and color of traditional and improved soysauce during fermentation were investigated. The traditional soysauce was made from soybean Meju and the improved soysauces were prepared from Kojis of various mixtures of soybean and wheat.
The contents of reducing sugar were higher in the improved soysauces than in the traditional soysauce and it increased with proportion to the mixing amount of wheat. The contents of total nitrogen and amino nitrogen were increased gradually during fermentation and, in the improved soysauce, it increased with the amount of soybean. The changes of the absorbance and the chromaticity were greaser in the traditional soysauce than in the improved soysauce during fermentation.
The increase of absorbance and the chromaticity was greater in the improved soysauce than that of the traditional soysauce during heating process. In the improved soysauce, the greater the amounts of wheat in Koji, the greater the increase of color.
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