Compositions comprising bio-fiber gum hydrolysate and processes to hydrolyze bio-fiber gum (BFG), involving dissolving BFG in a solvent to form a solution, heating the solution and adding endoxylanase to the solution or adding endoxylanase to the solution and heating the solution, incubating the solution to form a solution containing BFG hydrolysate, boiling the solution containing BFG hydrolysate to inactivate the endoxylanase, and separating the BFG hydrolysate from the liquid in the solution containing BFG hydrolysate.