Fermentation method of erythritol

The invention is applicable to the technical field of microbial fermentation, and provides a fermentation method of erythritol, which comprises the following steps: inoculating a seed culture medium with Aralo lipolytic saccharomycetes, and carrying out shake-flask culture to obtain shake-flask culture seeds; transferring the shake-flask culture seeds to a first-stage seed tank for culturing, and then transferring the shake-flask culture seeds to a second-stage seed tank for culturing, so as to obtain an Airo lipolytic yeast seed solution; transferring the Ailuo lipolytic yeast seed solution into a fermentation tank filled with a fermentation culture medium for fermentation culture to obtain erythritol; wherein the fermentation culture medium comprises 9-11g/L of a fermentation accelerant; the fermentation accelerant is prepared from the following components in parts by weight: 0.1 to 0.2 part of NMN; 18 to 19 parts of Tween 20; 4-5 parts of sodium sulfate; and 75.8 to 77.9 parts of water. In conclusion, the