Title

Composition of Dietary Fiber: Neutral and Acidic Sugar Composition of the Alcohol Insoluble Residue from Human Foods

Document Type

Article

Journal/Book Title/Conference

Journal of Food Science

Volume

47

Issue

5

Publisher

Wiley

Publication Date

9-1982

First Page

1469

Last Page

1471

Comments

The alcohol insoluble residue (AIR) isolated from 12 foods was acid hydrolyzed and analyzed for neutral and acidic sugars. Aliquots taken at 1 hr were reduced, acetylated and analyzed for neutral sugar content with GLC. Glucose from cellulose, starch and non-cellulosic polysaccharides was analyzed with colorimetric methods. The predominant sugars present in the dietary fiber were arabinose, xylose, galactose, glucose and uronic acids. Pectin and hemicellulose together comprised the majority of cell wall polysaccharides. Samples high in starch generally contained the greatest amounts of dietary fiber and the least amount of water on a fresh plant basis.