Define Water of hydration and Bound Water - Water Found in Food?
Water of hydration: This moisture is chemically bound to the constituents of the material and in most cases would not be considered in moisture content determinations. It is considered to be an integral part of the material.
Bound Water: Water that is in some way bound to the food that is why it exerts a vapour pressure less than that of pure water. It can frequently be thought of as the first layer of water molecules attached to a surface.