The present invention relates to a method for processing a composition comprising fructan and sucrose, comprising the step of incubating a composition comprising fructan and sucrose, preferably inulin and sucrose, with at least one yeast selected from the group consisting of Saccharomyces, and Kluyveromyces. Incubation with these yeasts results in the breakdown of free sugars such that purified fructan compositions are obtained.
