| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for industrially producing erythritol, reduced in culture medium-preparing operation and using an inexpensive nitrogen source having slight purification load. SOLUTION: This method for producing erythritol comprises inoculating a culture medium containing a carbon source with a microorganism having erythritol-producing ability and culturing the microorganism while gradually adding ammonia gas as a main nitrogen source of the culture medium from a feed line of air to the culture medium until ammonia gas concentration expressed in terms of nitrogen concentration become 0.2-20 g/L while maintaining pH of the culture medium to 3-7.
|
