Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7596016 | Food Chemistry | 2015 | 7 Pages |
Abstract
Dietary fibre of quinoa and amaranth was analysed for its insoluble and soluble fibre content, composition, and structure. Total dietary fibre content was 10% for quinoa and 11% for amaranth. For both pseudocereals, 78% of its dietary fibre was insoluble. Insoluble fibre (IDF) from quinoa and amaranth was mainly composed of galacturonic acid, arabinose, galactose, xylose and glucose. Linkage analysis indicated that IDF was composed of homogalacturonans and rhamnogalacturonan-I with arabinan side-chains (â¼55-60%), as well as highly branched xyloglucans (â¼30%) and cellulose. For both pseudocereals, 22% of total dietary fibre was soluble; a higher proportion than that found in wheat and maize (â¼15%). The soluble fibre (SDF) was composed of glucose, galacturonic acid and arabinose; for amaranth, xylose was also a major constituent. Xyloglucans made up â¼40-60% of the SDF and arabinose-rich pectic polysaccharides represented â¼34-55%.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Lisa M. Lamothe, Sathaporn Srichuwong, Bradley L. Reuhs, Bruce R. Hamaker,