Abstract: The invention provides a feed or food ingredient derived from soy hulls, wherein the feed or food ingredient comprises dietary fibres from the soy hulls in the form of soluble and insoluble polysaccharides, and wherein the dietary fibres from the soy hulls have been partly degraded by one or more carbohydrase(s) selected from mannanase(s), pectinase(s), xylanase(s), glucanase(s), and cellulase(s), into oligosaccharides having from 3 to 30 monomer sugar units (Oligosaccharides DP 3-30), and wherein the feed or food product comprises 5% by weight mono sugars, or less, preferably providing prebiotic effect.

Abstract: The invention relates to a fermented feed ingredient derived from spent brewer's yeast and a biomass of proteinaceous plant parts, where said biomass comprises 50% by weight or more of dehulled and defatted soybean meal, wherein the crude protein content of said feed ingredient is in the range of from 35% to 65% by weight on dry matter basis, and wherein from 2% to 8% by weight on dry matter basis of the protein is derived from yeast, and wherein the feed ingredient comprises at least 10% more of soluble non-starch polysaccharides (NSP) than the biomass from where the feed ingredient is derived. The invention also provide a method for preparing the feed ingredient and its use.