Maximization of cell growth and lipid production of freshwater microalga Chlorella vulgaris by enrichment technique for biodiesel production

Y. K. Wong, Y. H. Ho, K. C. Ho, H. M. Leung, Kin Lam YUNG*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Chlorella vulgaris was cultivated under limitation and starvation and under controlled conditions using different concentrations of nitrate (NaNO3) and phosphate (K2HPO4 and KH2PO4) chemicals in modified Bold basal medium (BBM). The biomass and lipid production responses to different media were examined in terms of optical density, cell density, dry biomass, and lipid productivity. In the 12-day batch culture period, the highest biomass productivity obtained was 72.083 mg L−1 day−1 under BBM - NcontrolPlimited condition. The highest lipid content, lipid concentration, and lipid productivity obtained were 53.202 %, 287.291 mg/L, and 23.449 mg L−1 day−1 under BBM - NControlPDeprivation condition, respectively. Nitrogen had a major effect in the biomass concentration of C. vulgaris, while no significant effect was found for phosphorus. Nitrogen and phosphorus starvation was found to be the strategy affecting the lipid accumulation and affected the lipid composition of C. vulgaris cultures.

Original languageEnglish
Pages (from-to)9089-9101
Number of pages13
JournalEnvironmental Science and Pollution Research
Volume24
Issue number10
DOIs
Publication statusPublished - 1 Apr 2017

Scopus Subject Areas

  • Environmental Chemistry
  • Pollution
  • Health, Toxicology and Mutagenesis

User-Defined Keywords

  • Algal cultivation
  • Chlorella vulgaris
  • Culture medium
  • Lipid production

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