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. 2017 Oct 10;10:232. doi: 10.1186/s13068-017-0924-8

Fig. 2.

Fig. 2

Time course of acetoin production from glucose by strain IPE5-4-UD-4 in a fermenter. The cultivation was conducted with 3 L medium containing ~ 120 g L−1 glucose at 50 °C for 72 h. The pH was maintained at 6.5 with stirring at 450 rpm with airflow of 0.6 vvm