Title
Dietary roles of non-strach polysachharides in human nutrition : a review
Author
Faculty/Department
Faculty of Sciences. Biology
Publication type
article
Publication
Subject
Biology
Pharmacology. Therapy
Human medicine
Source (journal)
CRC Critical reviews in food science and nutrition = Critical reviews in food science and nutrition
Volume/pages
52(2012) :10 , p. 899-935
ISSN
0099-0248
ISI
000305973300003
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Nonstarch polysaccharides (NSPs) occur naturally in many foods. The physiochemical and biological properties of these compounds correspond to dietary fibre. Nonstarch polysaccharides show various physiological effects in the small and large intestine and therefore having important health implications for human. The remarkable properties of dietary NSPs are water dispersibility, viscosity effect, bulk and fermentibility into short chain fatty acids (SCFAs). These features may lead to diminished risk of serious diet related diseases which are major problems in Western countries and are emerging in developing countries with greater affluence. These conditions include coronary heart disease, colo-rectal cancer, inflammatory bowel disease, breast cancer, tumor formation, mineral related abnormalities and disordered laxation. Insoluble NSPs (cellulose and hemicellulose) are effective laxatives whereas soluble NSPs (especially mixed-link β-glucans) lower plasma cholesterol levels and help to normalize blood glucose and insulin levels, making these kinds of polysaccharides a part of dietary plans to treat cardiovascular diseases and type 2 diabetes. Moreover, a major proportion of dietary NSPs escapes the small intestine nearly intact, and is fermented into SCFAs by commensal microflora present in the colon and caecum and promotes normal laxation. Short chain fatty acids have a number of health promoting effects and are particular effective in promoting large bowel function. Certain NSPs through their fermented products may promote the growth of specific beneficial colonic bacteria which offer prebiotic effect. Various modes of action of NSPs as therapeutic agent have been proposed in the present review. In addition, NSPs based films and coatings for packaging and wrapping are of commercial interest because they are compatible with several types of food products. However, many of physiological and nutritional impact of NSPs and the mechanism involved are not fully understood and even the recommendation on the dose of different dietary NSPs intake among different age groups needs to be studied.
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