Effect of different carbon sources on green algae Ulva rigida (C. Agardh) culture

In this study, the influence of sodium acetate and carbon dioxide on growth and proximate composition of Ulva rigida L. was studied. In the fist trial, six concentrations of sodium acetate were arranged, e.g. 3.05 mM (group 1), 6.10 mM (group 2), 12.20 mM (group 3), 24.40 mM (group 4), 36.60 mM (group 5) and 48.80 mM (group 6) addition to Conway medium. The maximum biomass yield was achieved in group 6. In the second trail, five concentrations of carbondioxide were arranged, e.g. 14.20 mM (group I), 28.40 mM (group II), 42.60 mM (group III), 56.81 mM (group IV) and 71.01 mM (group V) l day super(-1) addition to Conway medium. The highest biomass yield was calculated in group III which was added CO sub(2). The highest crude protein content was determined as 24.55 plus or minus 0.41% in group IV which was added 56.81 mM CO sub(2). The maximum lipid content was measured as 8.28 plus or minus 0.08% in group 2. At the end of the study, it was determined that the carbon sources influence the growth and the proximate composition of Ulva rigida.