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。
Main free amino acids are glutamine and glutamic in glutamine fermentation process.
谷氨酸胺发酵过程代谢的主要游离氨基酸是谷氨酸胺和谷氨酸。
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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