compound
Insoluble fibre
Insoluble fibre is a broad label for fibre components that do not readily dissolve in water.
Cellulose and some hemicelluloses are commonly described this way; water interaction, particle size and food structure still vary.
Structure that remains visible
Insoluble fibre often contributes bulk and changes the physical structure of food, but the label groups several compounds. It should be read as a food-property description rather than a guarantee of a specific bowel or metabolic outcome.
Related topics
Dietary fibre includes Insoluble fibre
Insoluble fibre is a broad subset within the dietary-fibre category.
Worth knowing
It is part of dietary fibre. Insoluble fibre is a practical subset of the wider dietary-fibre category, while formal definitions depend on the analytical method and source.
A closer look
Measurement needs a method
Water-holding capacity and particle structure vary among insoluble fibre sources, affecting hydration and physical bulk during digestion.
Water-holding capacity varies
Particle structure and water-holding capacity differ among insoluble fibre sources, changing how the food behaves during digestion.
References
Source-checked local draft.
Human editorial review pending.