Crude Fiber is a term used to describe the fibrous food residue that is left over after it has been dissolved in the laboratory with certain harsh chemical solvents such as sulfuric acid and sodium hydroxide.
- Used as a dietary supplement.
- Eat more crude fiber foods has four advantages: First, to improve gastrointestinal function, can prevent constipation, prevent colon cancer; second is to improve glycemic response, reduce postprandial blood sugar levels, helping to treat diabetes; third is to reduce plasma cholesterol content, hyperlipidemia and cardiovascular disease prevention; Fourth, control weight, reduce the incidence of obesity. However, not all are suitable for eating crude fiber foods.
- The compounds removed by the treatment of harsh chemicals predominantly include protein, sugar, starch, lipids and portions of the structural carbohydrates that are part of the organic construct of the plant cells. Some of the other structural carbohydrates such as cellulose and hemicellulose remain behind as the residue that resists digestion in the human body.
Source: LiveStrong, http://www.livestrong.com/article/322507-the-definition-of-crude-fiber-in-food/