Dietary fiber is a kind of food can not be broken down by the digestive enzymes of the human body, can not be absorbed by the body of polysaccharide substances and lignin general term.
Although it has obvious differences with protein, fat, vitamins and other nutrients, it is of great significance to human health, until the 1970s, dietary fiber was officially introduced into the nutrition community, classified as the "seventh nutrient", and then the market showed a good growth trend.