Effect of different growth conditions on biomass yield and fucoxanthin content of Amphora capitellata

The intention of the study was to investigate effect physical conditions such as aeration rate (1, 3, 5 L/min) well chemical including sodium nitrite (NaNO2), urea (CH4N2O) and ammonium chloride (NH4Cl) on biomass productivity fucoxanthin concentration A. capitellata. optimum cultures were cultivated in f/2 medium using nitrate (NaNO3) at light intensity 100 µmol photons/ m2s with 2 L/min L bubbling bottle photobioreactors. These then incubated 22.0±2 °C, under intensities 300 three different airflow rates 1, for 16 days. And then, culture prepared nitrogen sources achieve higher productivity. During production capitellata, maximum specific growth 0.166 day-1, which corresponded doubling time 4.166 day, obtained 1 when used. Chlorophyll-a contents also highest level same intensity. Dry amount reached 0.66±0.17 g/L case NaNO2. In this study, it identified that L/min, photons/m2s value capitellata cells concentration.