Fig. 1From: Optimization of bacterioruberin production from Halorubrum ruber and assessment of its antioxidant potentialOptimization of total carotenoid production by one factor at a time approach. Effect of (a) nitrogen sources (b) carbon sources (c) sucrose concentration (d) C/N ratio (e) NaCl concentration (e) magnesium supplementation, on total carotenoid production under shaken flask cultivation at 37 °C, 200 rpm for 6 d. Asterisk symbols (* and **) indicate significant differences between others (*p < 0.05 and **p < 0.01, respectively)Back to article page