Examination of indigenous microalgal species for maximal protein synthesis

Chung Hong Tan, Pau Loke Show, Man Kee Lam, Xiaoting Fu, Tau Chuan Ling, Chun Yen Chen, Jo Shu Chang

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The expanding aquaculture industry increases the prices of fishmeal, the main protein source in fish diet. A promising alternative is microalgal protein. Therefore, we investigated the protein production capacities of green microalgae Chlorella sorokiniana CY1 and Chlorella vulgaris ESP-31. After optimization, the maximum biomass and protein productivities of Chlorella sorokiniana CY1 reached high values of 4.35 ± 0.09 and 0.856 ± 0.025 g/L/d, while that of Chlorella vulgaris ESP-31 also reached high values of 4.636 ± 0.10 and 0.946 ± 0.065 g/L/d. The cultivation time for both species was only 2 days, wherein Chlorella sorokiniana CY1 and Chlorella vulgaris ESP-31 amassed moderate protein contents of 25.9 ± 1.3% and 26.8 ± 1.3%. The optimum conditions for both species were 50% initial nitrate concentration of Basal medium, 5% CO2 aeration, and 750 μmol/m2/s light intensity. The high biomass and protein productivities of both species indicated their capability as potential protein sources.

Original languageBritish English
Article number107425
JournalBiochemical Engineering Journal
Volume154
DOIs
StatePublished - 15 Feb 2020

Keywords

  • Chlorella
  • CO concentration
  • Light intensity
  • Microalgal protein
  • Nitrate concentration

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