insoluble fiber

dietary fiber that is not soluble in water, composed mainly of lignin, cellulose, and hemicelluloses and primarily found in the bran layers of cereal grains; its actions include increasing fecal bulk and decreasing free radicals in the gastrointestinal tract.

Medical dictionary. 2011.

Look at other dictionaries:

  • Soluble and insoluble fiber — Fiber (the portion of plants that cannot be digested by the human digestive tract) is classified as soluble and insoluble. Oats, beans, dried peas, and legumes are major sources of soluble fiber whereas wheat bran, whole grain products, and… …   Medical dictionary

  • Fiber and constipation — Insoluble fiber retains water in the colon, resulting in a softer and larger stool. It is used effectively in treating constipation resulting from poor dietary habits. Bran is particularly rich in insoluble …   Medical dictionary

  • Fiber — Fi ber, Fibre Fi bre,, n. [F. fibre, L. fibra.] 1. One of the delicate, threadlike portions of which the tissues of plants and animals are in part constituted; as, the fiber of flax or of muscle. [1913 Webster] 2. Any fine, slender thread, or… …   The Collaborative International Dictionary of English

  • Fiber gun — Fiber Fi ber, Fibre Fi bre,, n. [F. fibre, L. fibra.] 1. One of the delicate, threadlike portions of which the tissues of plants and animals are in part constituted; as, the fiber of flax or of muscle. [1913 Webster] 2. Any fine, slender thread,… …   The Collaborative International Dictionary of English

  • Fiber plants — Fiber Fi ber, Fibre Fi bre,, n. [F. fibre, L. fibra.] 1. One of the delicate, threadlike portions of which the tissues of plants and animals are in part constituted; as, the fiber of flax or of muscle. [1913 Webster] 2. Any fine, slender thread,… …   The Collaborative International Dictionary of English

  • Dietary fiber — Dietary fiber, dietary fibre, or sometimes roughage is the indigestible portion of plant foods having two main components: soluble (prebiotic, viscous) fiber that is readily fermented in the colon into gases and physiologically active byproducts …   Wikipedia

  • crude fiber — dietary fiber that remains after food is digested with alkali and acid that have destroyed all of the soluble and some of the insoluble fiber; it comprises mainly lignin and cellulose …   Medical dictionary

  • dietary fiber — Fiber Fi ber, Fibre Fi bre,, n. [F. fibre, L. fibra.] 1. One of the delicate, threadlike portions of which the tissues of plants and animals are in part constituted; as, the fiber of flax or of muscle. [1913 Webster] 2. Any fine, slender thread,… …   The Collaborative International Dictionary of English

  • dietary fiber — n FIBER (2) * * * the part of whole grains, vegetables, fruits, and nuts that resists digestion in the gastrointestinal tract; it includes soluble fibers such as pectins, gums, mucilages, and some hemicelluloses and insoluble fibers such as… …   Medical dictionary

  • Resistant starch — (RS) is starch that escapes digestion in the small intestine of healthy individuals. [Asp NG. Resistant starch. Proceedings from the second plenary meeting of EURESTA: European FLAIR Concerted Action No. 11 on physiological implications of the… …   Wikipedia

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