Fig. 4

The contents of total fatty acids and 10 selected fatty acids in the four selected green algal strains in the complete or nutrient-limited growth medium, at ambient or 15% CO₂ aeration in liquid culture. Growth conditions: AC, complete liquid medium aerated with ambient CO₂; CC, complete medium and aeration at 15% CO₂; A-P, C-P, aeration with ambient or 15% CO₂ at phosphate limitation; A-N, C-N, aeration with ambient or 15% CO₂ at nitrogen limitation. Data are expressed as mean ± SD from experiments performed in quadruplicate