KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Effects of Alcohols on the Production of Bacterial Cellulose

알콜류가 Bacterial Cellulose의 생산에 미치는 영향

  • 정재용 (경북대학교 화학공학과) ;
  • 박연희 (경북대학교 화학공학과) ;
  • 박중곤 (경북대학교 화학공학과)
  • Published : 2003.04.01
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Abstract

The effect of 4 kinds of alcohols was investigated on the production of bacterial cellulose (BC) by Gluconacetobacter hansenii PJK. The addition of alcohols and acetic acid to medium caused the pellets of bacterial cellulose to aggregate into a lump, which could be easily separated from the culture medium. The growth rate of cells and the production yield of BC increased in the medium containing ethanol. Other alcohols in the medium decreased cell growth and the cellulose production rate, because of their toxic effects. The addition of ethanol depressed the conversion of a $\textrm{Cel}^{+}$ cell to a $\textrm{Cel}^{-}$ mutant in shaking culture. Cells subcultured three in a medium containing ethanol produced BC without any loss of BC production yield.

Alcohol류를 배양액 속에 첨가하면 배양 중에 생성되는 BC가 엉기는 현상이 나타났다. 생성된 BC의 엉김은 생산배지로부터의 cellulose의 분리회수를 손쉽게 할 수 있는 장점이 있다. 이 중에서 ethanol을 사용하는 경우에는 BC의 생산성과 미생물의 성장속도가 증가하였다. Ethanol 이외의 alcohol류는 BC의 엉김현상에는 효과가 있었으나 그 독성으로 인하여 미생물의 성장과 BC의 생산성을 감소시켰다. Ethanol과 다른 alcohol 모두 BC의 엉김효과는 있으나 ethanol만 진탕배양에서 $\textrm{Cel}^{-}$균주의 출현 방지에 효과가 있었다.

Keywords

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