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. 2017 Nov 13;16:195. doi: 10.1186/s12934-017-0817-3

Fig. 1.

Fig. 1

a Progression of pH values and citric acid concentration (obtained by HPLC measurements) in cultivation medium of P. glabrum at 20 and 30 °C. b Progression of glucose concentration (obtained by HPLC measurements) in cultivation medium of P. glabrum at 20 and 30 °C