Microbiology and Biotechnology Letters (한국미생물·생명공학회지)
- Volume 19 Issue 2
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- Pages.193-199
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- 1991
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- 1598-642X(pISSN)
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- 2234-7305(eISSN)
Effects of pH on the Elaboration of Pullulan and the Morphology of Aureobasidium pullulans
배양액의 pH가 Aureobasidium pullulans의 풀루란 생성과 형태에 미치는 영향
- Shin, Yong-Chul (Department of Microbiology, College of Natural Sciences, Gyeongsang National University) ;
- Byun, Si-Myung (Department of Biological Science and Engineering, Korea Advanced Institute of Science and Technology)
- Published : 1991.04.01
Abstract
The effects of pH on the cell growth, the elaboration of pullulan, and the morphology of Aureobasidium pullulans IFO 4464 were examined. A. pulluans grew in yeast-like form at constant pH7.5 and in mycelial form at constant pH2.5. At the both pH conditions, the elaboration of pullulan was very low, about 6.0~6.5g/l. The mixture of yeast-like form and mycelial form of cells was found at the constant pH4.5, at which condition, the elaboration of pullulan was high, about 24.5g/l. The pH shift experimemts showed that the specific production rates of pullulan were 0.048(