Effect of Tomato Ketchup on Fermentation and Quality of Kimchi

토마토케첩 첨가가 배추김치의 발효와 품질에 미치는 영향

  • Published : 2006.10.01


This study was conducted to investigate the potential use of tomato ketchup as an ingredient to improve color and taste in kimchi with reduced red pepper content about 40%. The quality characterisics were studied for kimchi with or without tomato ketchup during fermentation for 25 days at $10^{\circ}C$. The pH of kimchi with tomato ketchup (KWT) decreased with increasing tomato ketchup content from 5% to 20%. The pH of KWT was lower than that of kimchi without tomato ketchup (KWOT) in the early stage of fermentation and did not show any difference after 10 days of fermentation at $10^{\circ}C$. The tendency of titratable acidity changes in KWT and KWOT was the same as the pH changes. The growth of lactic acid bacteria was more inhibited in KWT than in KWOT until 5 days fermentation and the significant difference between KWT and KWOT did not show after 10 days fermentation at $10^{\circ}C$. In sensory evaluation, the hot taste of the kimchi was decreased but the flavor and overall acceptability were increased significantly by addition of 5 to 10 % tomato ketchup (p<0.05).


tomato ketchup;quality;reduced hot taste;kimchi


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