4.6 Article

High cell density cultivation of Lipomyces starkeyi for achieving highly efficient lipid production from sugar under low C/N ratio

期刊

BIOCHEMICAL ENGINEERING JOURNAL
卷 149, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.bej.2019.05.013

关键词

Oleaginous yeast; Lipomyces starkeyi D35; High cell density culture; Cell and lipid productions

资金

  1. International Joint Program, Science and Technology Research Partnership for Sustainable Development (SATREPS) (Innovative Bio-production Indonesia
  2. iBioI) from Japan Science and Technology Agency
  3. Japan International Cooperation Agency (JST), Japan
  4. Japan International Cooperation Agency (JICA), Japan
  5. Lembaga Pengelola Dana Pendidikan (LPDP)
  6. Indonesian Endowment Fund for Education

向作者/读者索取更多资源

Oleaginous microorganisms such as oleaginous yeasts are well known for the ability to accumulate intracelular lipid more than 20% w/w in certain conditions. Lipomyces starkeyi D35 (Ls-D35 strain) is one of promising oleaginous yeast for lipid production. The purpose of this research is to establish the optimum condition for cell and lipid production of Ls-D35 strain under low C/N ratio (17.9) by high cell density cultivation. The optimum pH for cell and lipid production was achieved at pH 5 by using batch cultivation. Four different feeding strategies were conducted to observe the cell and lipid production of Ls-D35 strain. The highest cell yield was achieved by mixed glucose and xylose as substrates (0.15 w/w substrate) after 96 h and the highest lipid yield was achieved by single xylose feeding (0.13 w/w substrate) after 120 h. Meanwhile, the two most fatty acids content were C18:1 and C16:0 which are similar to the content of vegetable oil. These results showed that Ls-D35 strain could produce high cell and optimum lipid under low initial C/N ratio medium which can be an alternative for biodiesel production and other industrial products.

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