Total Lipid Production of Microalgae Chlorella sp. and Chlorella Vulgaris under Mixotrophic Culture Conditions

The freshwater microalgae Chlorella sp. and Vulgaris were cultured in a laboratory-scale photobioreactor their growth kinetics total lipid production evaluated. These species grown modified Conway medium, with an 8:16 photoperiod mechanical air ventilation. evaluation time was twenty days, the cell density determined daily using Neubauer chamber by optical spectrophotometry at 685 nm. rate percentage of lipids produced determined, biomasses obtained analyzed Fourier transform infrared (FTIR) spectroscopy. comparison showed significant difference between species, reaching maximum values 7,022,000 cells · mL-1 for 8,750,000 vulgaris. 0.298 days-1, which slightly higher than Vulgaris, 0.279 days-1. results also show that highest (27.3%), compared to vulgaris (21.5%)