Fig. 5From: Floridoside production by the red microalga Galdieria sulphuraria under different conditions of growth and osmotic stressInfluence of different parameters on floridoside content in G. sulphuraria. a Carbon source used for cell growth. b Type of compound causing the osmotic stress. c Stepwise addition of the osmotic agent. d Temperature during osmotic stress application. Columns represent the average value of three independent measurements plus standard deviation error bars. In all cases, cells were pre-grown on glycerol [except in (a)] and osmotically stressed with 1 M of solute during 24 h. For comparison purposes, the dashed border column included in (b–d) represents floridoside content in cells that were osmotically stressed with NaCl added in a single step at 40 °CBack to article page