Figure 5
Effect of initial fungi amount on the levels of Synechocystis-fungi flocculation. Total biomass is the sum of flocculated and suspended biomasses. Values are shown as the mean ± 1SD (n = 4), and ND = not detected. (a) Co-cultivation of Synechocystis at an initial cell density of OD730 = 0.2 without EM and with the initial fungal inoculation at 2.5, 5, and 10 mg fresh weight/100 mL. Significantly different levels (*P < 0.05: two-tailed student’s t-test), compared to that of the initial fungal inoculation at 2.5 mg/100 mL of the same cultivation time and the same type of biomass. (b) Co-cultivation of Synechocystis (fixed initial density of OD730 = 0.2) and initial fungal inoculation at 2.5, 5, and 10 mg fresh weight/100 mL with 10 µM EM. Significantly different levels (*P < 0.05: two-tailed student’s t-test) compared to that of the initial fungal inoculation at 2.5 mg/100 mL at the same cultivation time and the same type of biomass. Representative images of the cell flocculation from the respective culture are shown.
