| 摘要 |
The invention relates to a method of producing erythritol by fed-batch and repeated fermentation of sugars by microorganisms which produce erythritol, characterised by the fact that the fermentation is started by introducing said microorganisms into a fermentation medium containing a concentration of sugars lower than 200 g/l, and the fermentation is continued by carrying out at least one fermentation cycle which comprises:at least one phase of adding substrates so as to maintain the concentration of total sugars at a value of between 0 and 200 g/l,at least one phase of separation of the fermentation medium into a concentrated fraction of microorganisms and another fraction enriched with erythritol, when there is total consumption of sugars,at least one phase of recycling recovered and concentrated microorganisms in the fermentation medium.
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