Fig. 2.

Fig. 2. Response surface plots and contour plots for biomass production of L. plantarum 200655. (A, B) Interaction between maltose (X₁, g/l) and yeast extract (X₂, g/l) with soytone (X₃, g/l) at zero level. (C, D) Interaction between maltose (X₁, g/l) and soytone (X₃, g/l) with yeast extract (X₂, g/l) at zero level. (E, F) Interaction between yeast extract (X₂, g/l) and soytone (X₃, g/l) with maltose (X₁, g/l) at zero level.

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