Enhanced Production of Polymyxin E in Paenibacillus polymyxa by Replacement of Glucose by Starch

Figure 2

Influence of replacement of glucose by starch on amylase and gene expression. (a) Amylase activity along fermentation; (b) amylase activity per cell biomass after 96 h fermentation; (c) relative expression level of amyE. 45S: 45 g/L starch; 40S+5G: 40 g/L starch plus 5 g/L glucose; 30S+15G: 30 g/L starch plus 15 g/L glucose; 20S+25G: 20 g/L starch plus 25 g/L glucose; 45G: 45 g/L glucose. The statistically significant results are related to the condition of 45 g/L glucose.

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