Physicochemical and Sensory Characteristics of Dongchimi Added with Soybean-Curd Whey

두부순물 첨가 동치미의 이화학적.관능적 특성

  • 김미리 (충남대학교 식품영양학과) ;
  • 김민정 (충남대학교 식품영양학과) ;
  • 백종연 (충남대학교 식품영양학과)
  • Published : 2001.12.01

Abstract

Effect of soybean-curd whey on the dongchimi fermentation was investigated by measuring physicochemical and sensory characteristics during fermentation at 1$0^{\circ}C$. Dongchimi was prepared with various levels (0, 2, 5, and 10%) of soybean-curd whey. During fermentation, whereas salt concentrations of dongchimi liquid (1.1 ~ 2.0%) were similar among treatments, greater decrease in pH, but greater increase of total acidity, reducing sugar content, number of lactic acid bacteria and turbidity were observed in dongchimi with soybean-curd whey than those of control from the 2nd to the 9th day of fermentation. But at the 16th day of fermentation, acidity, turbidity and number of lactic acid bacteria of dongchimi with soybean-curd whey were similar to those of control. Reducing sugar content of soybean-curd whey addition groups maintained higher than that of control. The Hunter color L value decreased gradually and that of dongchimi with soybean-curd whey was lower than that of control. b value of control increased, but soybean-curd whey addition groups decreased during fermentation. Hardness and fracturability, determined by texture analyser, were higher in soybean-curd whey addition groups than control. Sensory evaluation showed that the scores of turbidity, sweet taste, savory taste, hardness and over-all preference were significantly higher in soybean-curd whey addition groups than control (p<0.05) ; the highest with 5% soybean-curd whey addition followed by 2% addition. dongchimi with 5% soybean-curd whey addition was the most preferable one with the score of 6.5.

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