C. pasteurianum高产1,3-丙二醇菌株发酵条件的研究(Ⅱ)

Study on Fermentation Conditions of A 1,3-PD High-producing Strain from Clostridiums pasteurianum

确定了 1,3 丙二醇高产菌株 (Clostridium pasteurianum简写为CpN 3 8) 1,3 PD厌氧发酵最适 pH值、温度、时间、接种量分别为 7 0、3 0℃、40h、8% ;在最适发酵条件下 ,3 0L发酵罐中CpN 3 8菌株 1,3 PD产量为 49 0 7g/L ,生产率为 2 9 3 8g/ (L·d)。

The fermentation conditions of 1,3-propanediol high-producing strain CpN-38 were studied. The optimum conditions of producing 1,3-PD were: initial pH 7.0,temperature 30℃, culture time 40 h, inoculum size 8%.Under the optimum conditions, the productivity of 1,3-PD reached up to 29.38 ?g/(L·d) and the 1,3-PD yield reached up to 49.07 ?g/L in 30?L fermentor by CpN-38.