A new approach to ammonium sulphate feeding for fed-batch Arthrospira (Spirulina) platensis cultivation in tubular photobioreactor

Arthrospira platensis was cultivated in tubular photobioreactor using different photosynthetic photon flux densities (PPFD) and protocols of (NH4)2SO4 fed-batch supply. Results were evaluated by variance analysis selecting maximum cell concentration, cell productivity, nitrogen-to-cell conversion factor and biomass, protein and lipid contents as responses