Effects of urea concentration on the growth and lipid production of
Chlorella sp. Y8-1
Our earlier studies revealed that urea was a suitable nitrogen
source for cultivation of Chlorella sp. Y8-1. Urea was adopted into
the medium at 0–2 g/L. The biomass, specific growth rates, and
lipid content of Chlorella sp. Y8-1 in the stationary phase are shown
in Fig. 4. The cultures had a low biomass concentration, specific
growth rate, and lipid content in the N-free medium. The Chlorella
sp. Y8-1 grew the most robustly in the medium containing 0.1–
0.25 g/L of urea, reaching a biomass concentration of