Fig. 2From: Purification and biofabrication of 5-aminolevulinic acid for photodynamic therapy against pathogens and cancer cells(a) Decolorization of 5-ALA after IEC using 0.5%, 1% and 2% activated carbon. (b) The HPLC result for 5-ALA precipitation from different organic solvents including methanol (10:1), ethanol (10:1), acetone (5:1) and acetone (20:1). The volume ratio of solvent to 5-ALA (v/v) is shown in the parenthesesBack to article page