Fig. 1From: Pre-concentration of microalga Euglena gracilis by alkalescent pH treatment and flocculation mechanism of Ca3(PO4)2, Mg3(PO4)2, and derivativesGrowth curve of E. gracilis and pH changes under photoautotrophic conditions. OD750 represents biomass, and pH the varying pH value of the PEM medium. The values represent mean ± S.D. n = 3Back to article page