1. A composition containing a mixture of the following fibers a), b) and c): - fiber a): fructooligosaccharide, - fiber b): stable dextrin or maltodextrin, - fiber c): polydextrose, where the relative fiber weight content is a), b) and c) with respect to the total weight of fibers a), b) and c) is as follows: - from 1% to 98% fiber a), - from 1% to 98% fiber b) and - from 1% to 50% fiber c), while the total number of fibers a), b) and c) is 100% .2. The composition according to claim 1, characterized in that the relative content of these fibers is as follows: from 1% to 98% fiber a), from 1% to 98% fiber b) and from 1% to less than 30% fiber c) .3. The composition according to claim 1, characterized in that the relative content of these fibers is as follows: from 30% to 50% fiber a), from 40% to 60% fiber b), and from 1% to 20% fiber c). four. A composition according to claim 1, characterized in that the total fiber concentration a), b) and c) in said composition is from 0.1 to 10 g, preferably from 0.5 to 6 g per 100 g of composition. A composition according to claim 4, characterized in that said total concentration is from 1.5 to 3 g per 100 g of composition. A composition according to claim 1, characterized in that said composition is fruit juice. A composition according to claim 6, wherein said fruit juice is orange juice, peach juice, grape juice, apple juice, banana juice or a mixture of fruit juices containing at least one of said fruit juices. A composition according to claim 6, characterized in that the sucrose content in said fruit juice is from 10 to 20 degrees Brix. A composition according to claim 7, characterized in that the sucrose content in said fruit juice is from 10 to 20 degrees Brix. The way to get1. Композиция, содержащая смесь следующих волокон a), b) и c):- волокно a): фруктоолигосахарид,- волокно b): устойчивый декстрин или мальтодекстрин,- волокно c): полидекстроза,где относительное содержание по массе волокон a), b) и c) относительно общей
