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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

Journal Article

Journal article

The Plant cell wall as a source of dietary fiber: Chemistry and structure  [1984]

Selvendran, Robert R.;

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Dietary fiber (DF) is defined and the various components of DF for the main food groups in a mixed diet are discussed. Carbohydrate polymers from dicotyledonous and monocotyledonous plants are discussed separately; the main emphasis is on the cell walls of edible plant organs. Attention is drawn to the structural features of the polymers, which are of special interest in context of the chemical analysis, or their mode of action in the human alimentary tract. The relationship of the operationally-defined groups of polymers to structural families, and the main sugars and glycosidic linkages present in the major polysaccharides, are tabulated. Gums, commonly used in food processing, are classified according to structural features. Sources and the monosaccharides found in each are listed. The monosaccharide content of DF in some fruits, vegetables, and seed products is given. Results of clinical feeding trials with concentrated bran fiber are reported and a possible mechanism for the mode of action of the DF in the human colon is postulated. (emc)

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American Journal of Clinical Nutrition (USA)

ISSN : 0002-9165