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Exploring Low-cost Carbon Sources for Microbial Lipids Production by Fed-batch Cultivation of Cryptococcus albidus
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  • Exploring Low-cost Carbon Sources for Microbial Lipids Production by Fed-batch Cultivation of Cryptococcus albidus
  • Exploring Low-cost Carbon Sources for Microbial Lipids Production by Fed-batch Cultivation of Cryptococcus albidus
저자명
Fei. Qiang,Chang. Ho-Nam,Shang. Longan,Choi. Jin-Dal-Rae
간행물명
Biotechnology and bioprocess engineering
권/호정보
2011년|16권 3호|pp.482-487 (6 pages)
발행정보
한국생물공학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Volatile fatty acids (VFAs), acetic acid, acetates, and ethanol were used as carbon sources for the production of microbial lipids using Cryptococcus albidus in batch cultures. C. albidus utilized organic acids less than glucose in the production of lipids, resulting in a lipid yield coefficient on VFAs of 0.125 g/g. In a two-stage batch culture, the lipid content increased to 43.8% (w/w) when VFAs were used as the sole carbon source in the second stage, which was two times higher than that of the batch culture. Furthermore, a 192 h, two-stage fed-batch cultivation of C. albidus produced a dry cell weight, lipid concentration, and lipid content of 26.4 g/L, 14.5 g/L, and 55.1% (w/w), respectively. The fed-batch culture model used in this study featured pure VFA solutions, with intermittent feeding, under oxygen-enriched air supply conditions. This study investigated several alternative carbon sources to reduce the cost of microbial lipids production and proved the feasibility of using VFAs as the carbon source for the provision of a high lipid content and productivity.