Fibre is contained in a particular form of starch, called resistant starch.
Fibre, like sugars and starches, is a type of carbohydrate. However, fibre is different because it is not digested by the human body in the same way as sugars and starches. It passes through the small intestine of the human body intact and is then fermented in the large intestine.
Fibre is naturally found in plant foods, such as fruit and berries, vegetables, grains (rice, wheat, oat etc.) and nuts. A diet high in fibre helps improve the digestion of other nutrients (carbohydrates, proteins and fat).
For most types of starches, when starch is extracted from cereals and tubers to make starch-based ingredients, it is separated from other elements of the plant. As a result of this separation, the final starch product will not contain fibres. The extracted fibres from the base materials are usually dried, put into pellets and used for animal feed or pet food.