Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Inhibitory Effect on the Growth of Intestinal Pathogenic Bacteria by Kimchi Fermentation

김치 발효에 의한 장내병원균의 생육저해효과

  • Published : 2002.06.01
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Abstract

Six strains of intestinal pathogenic bacteria were inoculated into kimchi at the preparation time, and the influence of kimchi fermentation on the growth of these pathogenic bacteria was investigated. The population of coliform bacteria in the kimchi raw materials, and its changes in the kimchi sample during fermentation were also determined. Among the raw materials, highest populations of coliform bacteria were detected in ginger and green onion, followed by Chinese cabbage, red pepper, and garlic. Populations of pathogenic bacteria (inoculated strains) and coliform bacteria in kimchi decreased as pH decreased with fermentation. Coliform bacteria disappeared at pH 3.9 in Chinese cabbage kimchi samples. Clostridium perfringens ATCC 13124, Listeria monocytogenes ATCC 19111, Salmonella typhimurium KCTC 1625, Staphylococcus aureus KCTC 1621, Vibrio parahamolyticus ATCC 27519, and Escherichia coli O157 H:7 ATCC 43894 were not detected at pH values less than 4.1, 3.7, 3.8, 3.8, 3.7, and 3.7 in Chinese cabbage kimchi, and at pH values less than 4.5, 4.0, 4.2, 4.2, 4.2 and 4.1 in mustard leaf kimchi, respectively. The juice of mustard leaf and allyl isothiocyanate exhibited high antimicrobial activities on the pathogenic bacteria, whereas the lowest on lactic acid bacteria. These results indicated that fermentation is useful to improve the safety of kimchi, and the antimicrobial effect of mustard leaf kimchi is mainly due to the major pungent compound of mustard leaf, allyl isothiocyanate.

김치 발효가 병원성 장내세균의 생육에 미치는 여향을 조사하기 위하여 배추 및 갓 김치를 제조할 때에 6종의 병원성 장내세균을 접종하여 발효 중의 이들의 변화를 측정하고, 또 김치의 주된 재료에서 검출되는 대장균과 이들 원료로 담근 김치 중의 대장균군 균수의 변화를 측정하였다. 주된 김치 재료 중 대장균군이 가장 많이 검출된 것은 생강과 대파였으며 그 다음이 배추, 고춧가루, 마늘의 순이었다. 김치 중의 대장균군 또는 시험 병원균은 모두 발효의 진행에 의한 pH의 저하에 따라 감소하고 사멸되었다. 대장균군은 배추김치에서 pH 3.9 이하에서 검출되지 않았으며 Clostridium perfringens ATCC 13124, Listeria monocytogenes ATCC 19111, Salmonella typhimurium KCTC 1625, Staphylococcus aureus KCTC 1621, Vibrio parahamolyticus ATCC 27519, 및 Escherichia coli O157 : H7 ATCC 43894는 배추김치에서 pH 4.1, 3.7, 3.8, 3.8, 3.7, 및 3.7 이하에서 각각 검출되지 않았고 갓김치에서는 pH 4.5, 4.0, 4.2, 4.2, 4.2 및 4.1 이하에서 각각 검출되지 않았다. 또 갓 즙액 및 allyl isothiocyanate는 병원균에 대해서 뚜렷한 생육저해효과를 나타내었으며 젖산균에 대한 효과는 미약하였다. 이들 결과로부터 김치 발효는 김치의 안전성을 높이게 되면 갓의 병원균에 대한 뚜렷한 생육저해효과는 주로 갓 중에 함유된 자극성 성분인 allyl isothiocyanate 의 항균작용에 의한 것으로 추정되었다.

Keywords

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