Figure 1From: Accelerated green process of tetramethylpyrazine production from glucose and diammonium phosphateTypical kinetic process of acetoin biosynthesis from glucose by B. subtilis CICC 10211. The 5-L fermentor was operated at a temperature of 37°C, pH of 7.0 ± 0.2, stirring at 500 rpm, and airflow of 1.0 vvm. pO 2 , partial pressure of dissolved oxygen.Back to article page