Macro-morphological characterization and kinetics of Mortierella alpina colonies during batch cultivation

PLoS One. 2018 Aug 7;13(8):e0192803. doi: 10.1371/journal.pone.0192803. eCollection 2018.

Abstract

An effective method for research of macro-morphological characterization and its kinetics was developed by studying the macro-morphological characteristics of Mortierella alpina, an oleaginous zygomycete widely used to produce lipids rich in PUFA, in function of culture medium composition and to link morphological features of fungus with the level of lipid production. A number of distinct morphological forms including hollow pellets, fluffy pellets and freely dispersed mycelia were obtained by changing the fermentation factors. By fitting a Logistic curve, the maximum specific growth rate (μmax)was obtained, which determined the final mycelia morphology. μmax of 0.6584 in three kind of morphological forms is the more appropriate. According to the Luedeking-Piret equation fitting, α≠0 and β≠0, lipid production was partially associated with the hyphal growth, fluffy pellets which turn glucose into lipidwas more effective than the other two kinds of morphological forms.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Batch Cell Culture Techniques*
  • Culture Media
  • Fermentation / physiology
  • Kinetics
  • Lipid Metabolism
  • Mortierella / cytology*
  • Mortierella / growth & development*
  • Mortierella / metabolism
  • Mycelium / cytology
  • Mycelium / growth & development
  • Mycelium / metabolism

Substances

  • Culture Media

Grants and funding

This work was supported by the National High Technology Research and Development Program of China (No. 2014AA021704) and the Anhui Provincial Natural Science Foundation (No. 1308085MA07). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.