Butyric acid production using Bacillus coagulans isolated from activated sludge
- Butyric acid production using Bacillus coagulans isolated from activated sludge
- 이경민; 김기연; 배재상; 엄영순; 상병인
- butyric acid; B. coagulans; galactose
- Issue Date
- 2010 한국생물공학회 추계학술발표대회 및 국제심포지움
- Butyric acid producing bacteria have important role in medicinal, food, pharmaceutical and chemical industries. In this study, an anaerobic microorganism utilizing galactose as a sole carbon source was isolated from activated sludge, and that is capable of producing butyric acid. Based on genotypic investigation, the isolated microoranism is identified as Bacillus coagulans. Almost of Bacillus coagulans species was well known as a lactic acid producer, not a butyric acid producer. Interestingly, the isolated Bacillus coagulans can produce butyric acid, but not lactic acid. The optimal growth of the isolated Bacillus coagulans occurred 40℃ and pH 5.5 and the final concentration and yield of butyric acid was 17.43 g L-1 and 0.44 g g-1 in batch culture. Further study is required to investigate the utilization potential of seaweed hydrolysates by the isolated strain.
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