Interaction effects between photoperiod and carbon dioxide on the production of biomass, lipid content, and fatty acid profiles in Haematocuccus pluvialis

Interaction effects between photoperiod and carbon dioxide on the production of biomass, lipid content, and fatty acid profiles in Haematocuccus pluvialis

The interaction effect of the photoperiod (12:12 and 24:0) and three levels of carbon dioxide (0.03%, 5%, and 10% CO2) were investigated in the Haematocuccus pluvialis. Based on the results, the highest growth, stabilization of CO2, and biomass production was observed at 5% and 10% CO2 in H. pluvialis in the 24-hour photoperiod. The highest lipid content was significantly obtained in the 24:0 photoperiod (43.58±1.77%) without any injection of CO2 (0.03%) in the culture medium (p 0.05). Also, the highest and the lowest protein contents were obtained in 10% CO2 and the photoperiods 24:0 (15.12%) and 12:12 (7.48%) respectively (p 0.05). The highest total carbohydrate content was measured at 10% CO2 and 12:12 photoperiod in H. pluvialis, but the value of carbohydrate double increased in the 24-photoperiod in the presence of 5% and 10% CO2.

The interaction effect of the photoperiod (12:12 and 24:0) and three levels of carbon dioxide (0.03%, 5%, and 10% CO2) were investigated in the Haematocuccus pluvialis. Based on the results, the highest growth, stabilization of CO2, and biomass production was observed at 5% and 10% CO2 in H. pluvialis in the 24-hour photoperiod. The highest lipid content was significantly obtained in the 24:0 photoperiod (43.58±1.77%) without any injection of CO2 (0.03%) in the culture medium (p 0.05). Also, the highest and the lowest protein contents were obtained in 10% CO2 and the photoperiods 24:0 (15.12%) and 12:12 (7.48%) respectively (p 0.05). The highest total carbohydrate content was measured at 10% CO2 and 12:12 photoperiod in H. pluvialis, but the value of carbohydrate double increased in the 24-photoperiod in the presence of 5% and 10% CO2.