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. 2019 Dec 23;18(1):15. doi: 10.3390/md18010015

Figure 2.

Figure 2

The effect of carbohydrate (a) and protein (b) sources on the prodigiosin production by S. marcescens TKU11. Carbohydrate and protein were mixed at the ratio of 5/3 and used as the C/N source. The culture medium contains 1.5% C/N source, 0.1% K2HPO4 and 0.1% FeSO4(NH4)2SO4. The fermentation was performed at the conditions at 30 °C in 1 d, and then at 25 °C over the next 2 d, shaking speed of 150 rpm, and a ratio volume of medium:flask of 1:2.5 (v/v). Means of prodigiosin yield (mg/100mL) values with the same letter in each figure are not significantly different based on Duncan’s multiple range test (alpha = 0.01).