The results provide a strong indication of the importance of nitrogen level for bacterial
cell growth. However, an increase in the concentration of (NH4)2SO4 in the synthetic wastewater led to a decrease in the lipid contents of cellsAeromonas sp. KMITL-R4.4 had
the highest lipid content when cultivation with an initial
(NH4)2SO4 concentration of 0.1 g/l (Figure 3A).