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Table 3 Comparison of the change in biomass concentration, biomass productivity, lipid content, lipid production, and lipid productivity of C. vulgaris in the four culture systems

From: Two-stage mixotrophic cultivation for enhancing the biomass and lipid productivity of Chlorella vulgaris

  MX MX-N MX-C PA
Change in biomass concentration in Phase I (g L−1) 1.66 ± 0.05 1.59 ± 0.08 1.62 ± 0.06 0.99 ± 0.04
Change in biomass concentration in Phase II (g L−1) 1.79 ± 0.04 –0.13 ± 0.04 0.40 ± 0.06 0.22 ± 0.04
Biomass productivity in Phase I (g L−1 day−1) 0.18 ± 0.01 0.18 ± 0.01 0.18 ± 0.01 0.11 ± 0.00
Biomass productivity in Phase II (g L−1 day−1) 0.20 ± 0.00 0.044 ± 0.01 0.024 ± 0.00
Final lipid content, η (%) 22.8 ± 0.8 23.3 ± 1.1 20.2 ± 1.2 24.6 ± 0.9
Final lipid production (mg L−1) 786.60 ± 27.21 340.47 ± 21.40 407.83 ± 21.55 298.02 ± 25.61
Final lipid productivity (mg L−1 day−1) 43.70 ± 1.51 18.92 ± 1.19 22.66 ± 1.20 16.56 ± 1.42
  1. ‘–’ is used to imply the numerical calculation is meaningless here