Figure 3From: Accelerated green process of tetramethylpyrazine production from glucose and diammonium phosphateEffect of molar ratio (acetoin/ammonium) on 2,3,5,6-tetramethylpyrazine (TMP) production. The fermentation broth containing 28.4 g L-1 of acetoin was supplemented with different amount of diammonium phosphate (DAP) and controlled at 95°C for 3 h.Back to article page