The present invention relates to a fermentation process for preparing erythritol with high productivity with novel mutant of Trigonopsis variabilis, more specifically, for preparing erythritol under optimal fermentation conditions for maximum erythritol production by optimizing the environmental conditions of culture such as pH, temperature and controlling osmotic pressure. A two-stage fermentation was performed to control osmotic pressure. Osmotic pressure was adjusted to a low level during growth phase and to a high level during production phase by adding glucose and NaCl. Therefore, erythritol production could be increased due to the increased mutant cells.
本发明涉及一种利用变异拟南芥(Trigonopsis variabilis)新型突变体制备赤藓糖醇的高产发酵工艺,更具体地说,是通过优化 pH 值、温度和控制渗透压等培养环境条件,在最佳发酵条件下制备赤藓糖醇,以获得最大的赤藓糖醇产量。为控制渗透压,进行了两阶段发酵。通过添加
葡萄糖和
氯化钠,在生长阶段将渗透压调节到低
水平,在生产阶段将渗透压调节到高
水平。因此,赤藓糖醇的产量可因突变细胞的增加而提高。