The Growth Characteristics of Candida sp. JY-Cells on Ethanol, Acetic acid and Acetaldehyde Substrate

Ethanol, Acetic acid 및 Acetaldehyde 기질에 대한 Candida sp. JY-5 효모의 증식 특징

  • Yeehn Yeeh (Department of Medicine, Inje College) ;
  • Jun, Hong-Ki (Department of Microbiology, Pusan National University)
  • Published : 1985.09.01

Abstract

The growth characteristics of Candida sp. JY-5 were examined on ethanol, acetic acid, or acetaldehyde as sole source of carbon by batch culture. The specific growth rates ($\mu$) of this strain on an ethanol during tile exponential period were changed depending upon the initial concentrations at above 0.5 g/l, but not in the proportion. The highest $\mu$ value was 0.291 hr$^{-1}$ and the maximum growth yield was 61.2% at the concentration of 10 g/l. The $\mu$ values on an acetic acid substrate were constant regardless of the initial concentrations presenting 0.106 hr$^{-1}$ in the highest value. The maximum growth yield was shown as 46.8% at the initial concentration of 10 g/l. The $\mu$ value on an acetaldehyde during the exponential period was 0.063 hr$^{-1}$ and the maximum growth yield was 44.9% at the initial acetaldehyde concentration of 0.2 g/l.

Ethanol, Acetic acid 및 Acetaldehyde를 단일 탄소원으로 하여 Candida sP. JY-5 효모의 증식특성을 batch culture를 통해 검토하였다. Ethanol상에서 이 효모의 지수적 증식기 동안의 비증식도 ($\mu$) 값은 농도가 0.5g/l 이상일 경우 그 초기 농도에 따라 변화하나 비례하지는 않았다. 최대 비증식도는 0.291$hr^{-1}$이었고 최대 증식수율은 10g/l 농도에서 61.2 %이었다. Acetic acid상에서의 비증식도는 이 기질의 초기 농도에 관계없이 일정하였으며 그 값이 0.106$hr^{-1}$. 최대 증식수율은 10g/l 농도에서 46.8%로 나타났다. 한편 Acetaldehyde 기질에서 지수적 증식기 동안의 최대 비증식도는 0. 063$hr^{-1}$이었고 최대 증식수율은 0.2g/l 농도에서 44.9%였다.

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