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. 2019 Aug 7;17(8):460. doi: 10.3390/md17080460

Table 1.

Kinetic parameters of P. purpureum cultivation under different light intensities and NaNO3 concentrations (maximum specific growth rate (µmax), latency phase (λ), duplication time of microalgae cells (G), determination coefficient (R2) and productivity).

Light Intensity (µmol m−2 s−1)
30 65 100
NaNO3 (g L−1) NaNO3 (g L−1) NaNO3 (g L−1)
0.075 0.225 0.45 0.075 0.225 0.45 0.075 0.225 0.45
Gompertz model constants a 0.74 0.88 2.05 1.33 1.74 1.04 1.59 1.03 2.27
b 9.3 14.26 1.51 1.76 1.16 3.11 1.42 1.28 1.27
c 0.07 0.09 0.007 0.013 0.006 0.017 0.009 0.005 0.008
µmax (d−1) 0.05 0.08 0.015 0.018 0.011 0.018 0.015 0.005 0.018
λ (h) 122.3 139.1 70.64 56.1 25.72 124.7 45.13 56 34.31
G (h) 13.74 8.22 46.96 38.23 62.27 39.37 46.64 45.78 39.2
R2 (%) 93.83 94.71 95.42 88.6 91.49 86.2 94.82 91.47 95.59
Productivity (mg L−1 d−1) 173.2 151.8 138.6 349.8 208.2 160.6 386 258 259.9