Increasing butanol/acetone ratio and solvent productivity in ABE fermentation by consecutively feeding butyrate to weaken metabolic strength of butyrate loop

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- 바이오플라스틱
  1. 플라스틱
- 바이오정밀화학
  1. 용매
  2. 화학제품
  3. 연료
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- 의료용 화학소재
  1. 치료제
  2. 식품첨가제

논문

Increasing butanol/acetone ratio and solvent productivity in ABE fermentation by consecutively feeding butyrate to weaken metabolic strength of butyrate loop

학술지

Bioprocess and biosystems engineering

저자명

Li, Xin; Shi, Zhongping; Li, Zhigang

초록

<P>In this study, we attempted to increase butanol/acetone ratio and total solvent productivity in ABE fermentations with corn- and cassava-based media, by consecutively feeding a small amount of butyrate/acetate during solventogenic phase to weaken the metabolic strengths in butyrate/acetate closed-loops. Consecutively feeding a small amount of butyrate (a total of 3.0 g/L-broth) is most effective in improving performance of corn-based ABE fermentations, as it simultaneously increased average butanol/acetone ratio by 23 % (1.92-2.36) and total solvent productivity by 16 % (0.355-0.410 g/L/h) as compared with those of control. However, the butyrate feeding strategy could not improve butanol/acetone ratio and total solvent productivity in cassava-based ABE fermentations, where the metabolic strength of butyrate closed-loop had already been very low.</P>

발행연도

2014

발행기관

Springer-Verlag

ISSN

1615-7591

ISSN

1615-7605

권

호

페이지

pp.1609-1616