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Promotive effects of resistant maltodextrin on apparent absorption of calcium, magnesium, iron and zinc in rats

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Title: Promotive effects of resistant maltodextrin on apparent absorption of calcium, magnesium, iron and zinc in rats
Authors: Miyazato, Shoko Browse this author
Nakagawa, Chie Browse this author
Kishimoto, Yuka Browse this author
Tagami, Hiroyuki Browse this author
Hara, Hiroshi Browse this author
Keywords: Resistant maltodextrin
Hydrogenated resistant maltodextrin
Apparent mineral absorption
Cecal fermentation
Short-chain fatty acid
Issue Date: Apr-2010
Publisher: Springer Berlin / Heidelberg
Journal Title: European Journal of Nutrition
Volume: 49
Issue: 3
Start Page: 165
End Page: 171
Publisher DOI: 10.1007/s00394-009-0062-6
Abstract: Background: It has been reported that low-viscous and fermentable dietary fiber and nondigestible oligosaccharides enhance mineral absorption. Resistant maltodextrin, nonviscous, fermentable and soluble source of dietary fiber, has several physiological functions. However, influence of resistant maltodextrin on mineral absorption is unclear. Aim of the study: We conducted balance studies in rats to investigate effects of resistant maltodextrin and hydrogenated resistant maltodextrin on apparent mineral absorption. Methods: In experiment 1 (Exp. 1), 40 rats were fed test diets based on AIN-93G with or without resistant maltodextrin or hydrogenated resistant maltodextrin for 2 weeks. In experiment 2 (Exp. 2), 32 rats were cecectomized (CX) or sham-operated (Sham) and fed diets with or without hydrogenated resistant maltodextrin for 1 week. Results: In Exp. 1, ingestion of resistant maltodextrin and hydrogenated resistant maltodextrin dose-dependently enhanced apparent absorption rates of Ca, Mg, Fe and Zn, and increased cecal fermentation with cecal expansion. In Exp. 2, the absorption rates of Ca and Mg were significantly enhanced by ingestion of hydrogenated resistant maltodextrin in Sham group but not in CX group. The promotion of Fe and Zn absorption was not affected by cecectomy. Conclusion: Ingestion of resistant maltodextrin and hydrogenated resistant maltodextrin increased apparent Ca and Mg absorptions dependent on cecal fermentation, while other mechanisms may also be involved in promotion of apparent Fe and Zn absorption by resistant maltodextrin.
Type: article
URI: http://hdl.handle.net/2115/42893
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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