L-鸟氨酸发酵用培养基的改进研究

Improvement of the Medium for L-ornithine Fermentation

利用价格低廉的废酵母制作酵母水解液替代酵母浸膏做有机氮源,加入丁二酸做调控物对产L-鸟氨酸的谷氨酸棒杆菌进行发酵培养。结果表明,使用废酵母作为有机氮源后,L-鸟氨酸的产量增加了26.4%。加入1.0%的丁二酸,L-鸟氨酸的产量提高了10.4%。

The fermentation of L-ornithine by Corynebacterium glutamicum was studied by using the low cost organic nitrogen source of yeast hydrolysate instead of the original yeast extract and adding the succinic acid to the medium as the control agent. The results suggested that the yield of L -ornithine was increased 26.4% by using yeast hydrolysate as organic nitrogen source and 10. 4% by adding 1.0% succinic acid.