3. Among the nitrogen sources tested for T. spathulata strain (Fig. 3a), a mixture of yeast extract and peptone (1:1) gave the maximum biomass (17.05 g/L) and lipid yield (10.43 g/L), followed by yeast extract (16.02 g/L biomass and 7.12
g/L lipid yield), peptone (10.88 g/L biomass and 5.43 lipid yield) and (NH4)2SO4 (9.17 g/L biomass and 3.85 g/L lipid yield)