Method and device for the carrying out of a microbiological or enzymatic process.

摘要

To improve the yield and/or reduce the energy cost in carrying out a microbiological or enzymatic process in a reactor and to make the reaction conditions essentially independent of the size of the reactor, it is proposed to make use, as a reactor, of an endless circulation tube in which the reaction components are circulated essentially according to a plug flow and in this process are fed through one or more in-line mixers fitted inside the tube. This method and reactor are suitable in particular for the preparation by fermentation of polysaccharides, especially xanthan, in which water, a production medium containing one or more sugars and nutrient satts and an inoculating material of a suitable aerobic bacterium are introduced into the said reactor tube and exposed to fermentation with air being supplied. Preferably the concentration of a reaction component or a value derived therefrom is measured at at least one point and the reaction velocity is regulated on the basis of the said measurement within critical limits.