A bioenergetic assessment of photosynthetic growth of Synechocystis sp. PCC 6803 in continuous cultures

Table 1 Cell concentration, light absorption, productivity, growth yield, actual biomass yield on light energy (Y) and light conversion efficiency (LCE) of Synechocystis in a continuous culture

D (h⁻¹)	Concentration (mg L⁻¹)	Absorbed light (%)	Productivity (mg h⁻¹)	Y _kJ (g kJ⁻¹×10⁻³)	Y _kJ (g kJ⁻¹×10⁻³)^a	Y (g mol photons⁻¹)	LCE (%)	LCE (%)^a
0.0173	632 ± 12	99.6	10.50 ± 0.30	4.71 ± 0.13	4.69 ± 0.28	1.02 ± 0.02	10.7 ± 0.5	10.5 ± 0.6
0.0198	580 ± 10	99.5	10.88 ± 0.19	4.89 ± 0.08	4.86 ± 0.21	1.07 ± 0.02	10.7 ± 0.3	10.6 ± 0.4
0.0237	468 ± 3	99.0	10.67 ± 0.17	4.82 ± 0.17	4.77 ± 0.17	1.04 ± 0.01	11.4 ± 0.5	11.3 ± 0.5
0.0282	413 ± 7	98.6	11.06 ± 0.18	5.02 ± 0.09	4.94 ± 0.55	1.09 ± 0.02	11.1 ± 0.7	10.9 ± 1.2
0.0361	315 ± 9	97.1	10.96 ± 0.31	5.05 ± 0.10	4.90 ± 0.10	1.08 ± 0.03	11.9 ± 0.2	11.6 ± 0.2
0.0480	230 ± 3	94.6	10.71 ± 0.15	5.06 ± 0.07	4.79 ± 0.25	1.08 ± 0.01	11.0 ± 0.6	10.3 ± 0.7
0.0550	217 ± 9	94.3	11.30 ± 0.15	5.36 ± 0.13	5.05 ± 0.12	1.17 ± 0.05	11.9 ± 0.3	11.1 ± 0.3
0.0654	190 ± 0	90.0	11.18 ± 0.41	5.55 ± 0.33	5.00 ± 0.49	1.21 ± 0.01	11.6 ± 0.9	10.4 ± 1.0
0.0725	155 ± 7	85.0	10.12 ± 0.50	5.32 ± 0.25	4.52 ± 0.21	1.22 ± 0.05	11.7 ± 0.6	9.9 ± 0.5
0.0849	118 ± 5	79.0	9.48 ± 0.84	5.36 ± 0.29	4.24 ± 0.23	1.17 ± 0.05	11.2 ± 0.6	8.9 ± 0.5
0.0956	102 ± 3	76.5	9.55 ± 0.30	5.58 ± 0.26	4.27 ± 0.20	1.18 ± 0.03	11.4 ± 0.4	8.5 ± 0.3
0.1184	75 ± 0	69.2	8.44 ± 0.54	5.45 ± 0.12	3.77 ± 0.08	1.19 ± 0.01	11.2 ± 0.2	7.7 ± 0.2

Values are mean ± standard deviations calculated during the steady state at each dilution rate
^aWhen considering total light absorption

ISSN: 2731-3654