Dietary fiber is a plant ingredient, which cannot be digested by the stomach enzymes. It is also the seventh major nutrients humans needed. Dietary fiber can be divided into two categories according to their solubility:soluble and insoluble dietary fiber. Generally soluble dietary has strong adsorption properties of bile acids, cholesterol and harmful substances, as well as free radical scavenging ability;the main study of insoluble dietary fiber is about the effects of diameter, temperature and other factors on the expansive force, water holding capacity, oil hydraulic force and binding water...
