Fermentation production method of erythritol

The invention belongs to the technical field of erythritol production, and particularly discloses a fermentation production method of erythritol. According to the erythritol fermentation production method, a fermentation culture medium is put into a fermentation tank in a disposable batch feeding manner, then high-temperature sterilization is performed, seeds are transferred into the fermentationtank after temperature reduction, and erythritol is produced through fermentation culture. By disposable batch feeding for fermentation, bacterial contamination risk of the fermentation tank is effectively reduced, strain growth for fermentation culture is facilitated, the fermentation conversion rate is increased, the fermentation period is shortened, and the yield of erythritol can be increased.And by controlling conditions such as fermentation culture temperature, pH value and the like in the fermentation process, the effects of shortening the fermentation period and improving the yield oferythritol and conversion