Korean Journal of Food Science and Technology (한국식품과학회지)
- Volume 30 Issue 3
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- Pages.650-654
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- 1998
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- 0367-6293(pISSN)
Changes in the Bacterial Flora during Kakdugi Fermentation and the Physiological Characterization of Lactic Coccal Isolates
깍두기 발효 중 균상 변화 및 젖산 구균의 생리적 특성
- Ryu, Chun-Sun (The Graduate School of Biotechnology, Korea University) ;
- Kim, Eun-Kyung (The Graduate School of Biotechnology, Korea University) ;
- Kim, Young-Bae (The Graduate School of Biotechnology, Korea University)
- Published : 1998.06.01
Abstract
Three distinct phases were observed in acidity change during the Kakdugi fermentation; the first increasing phase, a stable phase, and the second increase phase. Enterobacter strains were the dominant bacteria (more than 90%) just after preparation of Kakdugi. Lactobacillus and Leuconostoc sp. were the mainly isolated from properly-ripened (53 and 43%, respectively) as well as from over-ripened Kakdugi (63 and 37%, respectively). Leuconostoc mesenteroides subsp. paramesenteroides was the dominant one among the lactic cocci from Kakdugi. The isolates from properly-ripened Kakdugi required more amino acids for growth compared to those from over-ripened one while no difference was observed with vitamins. Their physiological characteristics such as amino acid and vitamin requirement were different from those of 9 type strains of various Leuconostoc species.
깍두기 숙성 중에는 초기와 후기에 산 생성이 활발하고 그 사이에 비교적 신도의 변화가 없는 시기가 관찰되었다. 세균들은 담금 직후에는 Enterobacter가 90% 이상 차지하고 있었으며 적숙기인 숙성 8일 후에는 Lactobacillus 종류가 53%, Leuconostoc 종류가 43% 그리고 과숙기인 숙성 40일 후에는 Lactobacillus 종류가 63%, Leuconostoc 종류가 37%로서 중요한 종류로 분리되었다. 젖산 구균의 대부분은 Leuconostoc mesenteroides subsp. paramesenteroides로서 적숙기에 분리된 균주들은 과숙기에 분리된 균주들에 비하여 요구하는 아미노산이 다소 증가되었으나 비타민 요구성에서는 차이가 없었다. 이들은 이와 같은 생리특성에서 시험한 9종의 Leuconostoc속 표준균주와는 다른 성질을 보이고 있었다.