摘要
以L-鸟氨酸发酵废菌渣水解固形物为有机氮源,进行L-鸟氨酸发酵工艺条件的研究,实验结果发现最佳回用工艺条件为:水解时间20 h,水解温度90.0℃,水解液加入量6.5 g/100 m L,6.0 mol/L硫酸溶液(m L)与含水废菌渣固形物(g)之比1∶2.5。在上述条件下,L-鸟氨酸产量达到了37.47 g/L,与酵母膏为有机氮源进行的鸟氨酸发酵差异不明显,且产量稳定。
Hydrolysis solids of L-ornithine fermentation residues were used as the organic nitrogen source to study the production of L-ornithine by fermentation.The optimized conditions of reuse process were as follows：hydrolysis time 20 h,hydrolysis temperature 90.0℃,hydrolysate 6.5 g/100 mL,the ratio was 1∶2.5 of 6.0 mol/L H2SO4 solution （mL）：fungi residues solids containing water （g）. Finally,37.47 g/L of L-ornithine was obtained under these conditions,which was no difference compared with the control group.The yield of the L-ornithine obtained from the continuous reuse process was stable.
出处
《食品研究与开发》
CAS
北大核心
2015年第20期92-95,共4页
Food Research and Development
关键词
L-鸟氨酸
废菌渣
正交试验
工艺条件
L-ornithine
fermentation residues
orthogonal array design
process conditions
