| abstract |
Microbiological method of production of a dextran solution, according to which a culture medium containing sucrose is inoculated with a preculture of a bacterial strain that is able to produce dextran, then the dextran solution obtained at the end of fermentation is recovered directly, without a subsequent concentration step, characterized in that: - before inoculation, the culture medium contains at least 10 wt.% of sucrose, - after inoculation, sucrose is added again in conditions such that the total amount of sucrose in the medium, including that present before inoculation, is at least 16 wt.%, - the dextran solution obtained contains at least 10 wt.% of dextran. The native solution of dextran obtained and use of the solution as a flocculant. |