In the process of glutamic acid fermentation, dissolved oxygen level was one of the most important factors.
在谷氨酸发酵过程中，溶氧水平是影响发酵的重要因素之一。
Phosphate. It is essential glutamic acid fermentation process, but the concentration can not be too high, otherwise they will be to valine fermentation.
磷酸盐。它是谷氨酸发酵过程中必需的，但浓度不能过高，否则会转向缬氨酸发酵。
According to above results, the experiments of glutamic acid fermentation were carried out, and the sugar-acid conversion in five batch fermentations were reached above 50%.
在此基础上，进行了谷氨酸发酵试验，摸索出用该设备进行谷氨酸发酵的最佳工艺条件，使5批一次性投糖发酵的糖酸转化率达到50%以上。
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