For humans mostly indigestible dietary fibre are still nutritionally important. They are used in the large intestine as food for bacteria and ensure the growth of healthy intestinal bacteria and thus for a healthy intestinal flora. Fiber is very important for healthy digestion. The recommended amount is 25-30 grams per day.
Dietary fibre in your diet
Dietary fibre are mainly found in plant foods such as cereals, legumes, fruits and vegetables. They are divided into water-soluble (eg pectin) and insoluble (eg cellulose) dietary fibre. Because humans lack certain enzymes for cleavage of these compounds, the energy can not or only slightly be made usable. Thus, dietary fibre increase the volume of food but without increasing the caloric value .