Journal of Genetic Engineering and Biotechnology

Table 2 Impact of elements concentrations on Pseudochlorella pringsheimii Biomass ( dry weight (g/L) and oil contents

From: Cultivation of Pseudochlorella pringsheimii for biodiesel production in a scalable indoor photobioreactor: case studies from Egypt

Elements Concentrations	Culture Age (days)						Oil contents %
Elements Concentrations	0	3	6	9	12	15	Oil contents %
Nitrogen (KNO₃ g/L)
0.0	0.458 ± 0.03	0.576 ± 0.05	0.725 ± 0.04	0.815 ± 0.04	0.932 ± 0.08	0.967 ± 0.04	29.51 ^a
0.125	0.483 ± 0.0	0.658 ± 0.04	0.795 ± 0.06	0.893 ± 0.06	1.12 ± 0.07	1.54 ± 0.06	28.14 ^b
0.255	0.511 ± 0.04	0.733 ± 0.05	0.895 ± 0.07	1.01 ± 0.07	1.34 ± 0.06	1.64 ± 0.08	8.14 ^c
0.50	0.465 ± 0.04	0.827 ± 0.06	1.681 ± 0.04	2.65 ± 0.08	2.98 ± 0.09	4.48 ± 0.2	4.32 ^d
Phosphorus ( KH₂PO₄ g/L)
0.0	0.444 ± 0.04	0.581 ± 0.05	0.621 ± 0.04	0.754 ± 0.04	0.862 ± 0.04	0.912 ± 0.09	15.65 ^a
0.175	0.469 ± 0.05	0.593 ± 0.04	0.721 ± 0.05	0.798 ± 0.04	0.857 ± 0.08	1.12 ± 0.08	12.36 ^b
0.35	0.536 ± 0.04	0.589 ± 0.06	0.936 ± 0.06	1.153 ± 0.07	1.223 ± 0.07	1.356 ± 0.07	4.38 ^c
Iron (FeSO₄ mg/ L)
0.0	0.458 ± 0.06	0.548 ± 0.05	0.625 ± 0.04	0.798 ± 0.04	0.981 ± 0.04	1.11 ± 0.09	5.36 ^a
5.0	0.487 ± 0.05	0.567 ± 0.06	0.684 ± 0.06	0.891 ± 0.04	0.962 ± 0.04	1.23 ± 0.08	7.25 ^b
10.0	0.449 ± 0.06	0.651 ± 0.06	0.823 ± 0.05	0.995 ± 0.06	1.12 ± 0.05	1.45 ± 0.06	10.25 ^c

Data represent means ±SD values from three independent experiments. The Values of the all parameters [Dry weight (g/L), Chll a (mg/L), Oil content (%) and Oil Yield (g/L)] in the column are significantly different at < 0.05
The different letters in the same column are significant differences between the treated samples

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