Changes of Index Microorganisms and Lactic Acid Bacteria of Korean Fermented Vegetables (Kimchi) During the Ripening and Fermentation-Part 2

• 영문명: Changes of Index Microorganisms and Lactic Acid Bacteria of Korean Fermented Vegetables (Kimchi) During the Ripening and Fermentation-Part 2
• 발행기관: 한국환경보건학회
• 저자명: Kim, Jong-Gyu Yoon, Joon-Sik
• 간행물 정보: 『1. 한국환경보건학회지』제34권 제1호, 70~75쪽, 전체 6쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2008.02.28

영문 초록

The Chinese cabbage kimchi, baechoo-kimchi, is the most popular type of kimchi in Korea. This study was performed to investigate the changes of index microorganisms (aerobic bacteria, psychrotrophilic bacteria, coliforms, and Escherichia coli), lactic acid bacteria, pH, and acidity of kimchi during the long-term fermentation and ripening. A homemade-style traditional Korean baechoo-kimchi, was prepared from Chinese cabbage, red pepper, green onion, garlic, ginger, and salt-fermented anchovy sauce, and then incubated at 10∘C for 28 days. In the baechoo-kimchi, the number of aerobic bacteria increased with time. The number of psychrotrophilic bacteria maintained their numbers (104CFU/g) in the kimchi during the fermentation. Coliforms and E. coli were not detected in the kimchi. The pH of kimchi decreased and the acidity of kimchi increased over time. Lactic acid bacteria, which are representative of fermentative microorganisms in the kimchi process showed rapid growth in the earlier stage of fermentation and increased steadily after 7 days. The counts of lactic acid bacteria were at a level of 104CFU/g early in the fermentation stage, reaching a level of 108CFU/g after 14 days, and at this point pH was 4.18 and acidity reached 0.63, indicating that the optimal state of kimchi fermentation. This study suggests that the lactic acid bacteria which were proliferated in kimchi during the ripening and fermentation could contribute to improving the taste and flavor of kimchi and inhibit the growth of pathogenic microorganisms that might exist in kimchi.

키워드

Kimchi index microorganisms lactic acid bacteria pH acidity