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United States Department of Agriculture

Agricultural Research Service

Title: Soluble and Insoluble Dietary Fiber Content and Composition in Oat.

Authors
item Manthey, Frank - CER SCI, NDSU, FARGO, ND
item Hareland, Gary
item Huseby, Donnna - CER SCI, NDSU, FARGO, ND

Submitted to: Cereal Chemistry
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: January 25, 1999
Publication Date: May 1, 1999
Citation: Manthey, F.A., Hareland, G.A., Huseby, D.J. 1999. Soluble and insoluble dietary fiber content and composition in oat. Cereal Chemistry. 76:417-420.

Interpretive Summary: Six oat genotypes were grown in nursery yield trials during 1989-1992 at Lisbon, ND. Oat groats were analyzed for soluble and insoluble dietary fiber amount and composition. Oat genotypes contained different amounts of soluble and insoluble dietary fiber. Growing year had an impact on the amount of soluble beta-glucan but not on the amounts of total sugar or uronic acid of the soluble dietary fiber fraction. Oat genotypes varied in amount of total neutral sugar but not in uronic acid. Growing year had no impact on the amounts of total neutral sugar, beta-glucan, uronic acid, or Klason lignin of the insoluble dietary fiber fraction. Genotypes varied in amounts of total neutral sugar, beta-glucan, and Klason lignin but not in uronic acid of the insoluble dietary fiber fraction. The neutral sugar of the soluble dietary fiber fraction was composed of glucose, arabinose, xylose, and galactose. The neutral sugars of the insoluble fiber fraction were composed of glucose, arabinose, and xylose. Since oat genotypes contained different amounts of soluble and insoluble dietary fiber, oat genotypes could be developed for specific dietary fiber content and composition through breeding studies.

Technical Abstract: Six oat genotypes were grown in nursery yield trials during 1989-1992 at Lisbon, ND. Groats were analyzed for soluble and insoluble dietary fiber content and composition. Genotype-by-growing year interaction was not significant for soluble or insoluble dietary fiber. Soluble and insoluble dietary fiber differed with genotype (6.0-7.1% and 4.1-4.9%, respectively). The genotype-by-growing year interaction was significant for soluble beta-glucan content but not for total neutral sugar or uronic acid content of the soluble dietary fiber. Genotypes did vary in total neutral sugar content but not in uronic acid content. The genotype-by-growing year interaction was not significant for total neutral sugar, beta-glucan, uronic acid, or Klason lignin content of insoluble dietary fiber. Genotypes did vary in total neutral sugar, beta-glucan, and Klason lignin content but not in uronic acid content of insoluble dietary fiber. The neutral sugar content of soluble dietary fiber was composed of glucose, arabinose, xylose, and galactose. The neutral sugar content of insoluble fiber was composed of glucose, arabinose, and xylose. The content and composition of soluble and insoluble dietary fiber varied with oat genotype. Therefore, oat genotypes could be bred for specific dietary fiber content and composition.

Last Modified: 7/28/2014
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