Change of Fermentation Characteristic of Kimchi by n-Capric Acid or n-Capric Acid Methyl Ester Addition and Storage Temperature

n-Capric Acid 또는 n-Capric Acid Methyl Ester 첨가와 저장온도에 따른 김치의 발효특성

  • Published : 1999.05.31

Abstract

This study was conducted to investigate the effects of n-capric acid(CA) or n-capric acid methyl ester (CE) addition during salting process, and fermentation temperature on chemical and microbial changes of Kimchi. The pHs of control, CA and CE were 3.78, 4.28 and 4.35 after 6 days of storage at $20^{\circ}C$ and were 3.85, 5.14 and 5.10 after 42 days of storage at $4^{\circ}C$, respectively. The effects of CA or CE addition at $4^{\circ}C$ were higher than those at $20^{\circ}C$. The maximum edible acidity, 0.75%, was reached within 3 days at $20^{\circ}C$, 15 days at $12^{\circ}C$, and the acidity of 42 days at $4^{\circ}C$ was 0.62% which was still lower value than the maximum edible acidity. Total bacteria, Leuconostoc, Lactobacillus and yeast counts of the control were higher value than those of the treatments throught the whole fermentation period. The addition of CE at $4^{\circ}C$ had much affected the reduction of yeast count. As microbial counts and reduction rates of control and treated Kimchi increased with increasing the storage temperature.