QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Purchase Article View Shopping Cart Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Sandström, B. Articles by Reid, M. D. Search for Related Content PubMed PubMed Citation Articles by Sandström, B. Articles by Reid, M. D.

---

Article

A High Oat-Bran Intake Does Not Impair Zinc Absorption in Humans When Added to a Low-Fiber Animal Protein-Based Diet¹

Brittmarie Sandström^*2, Susanne Bügel^*, Brian A. McGaw, John Price^** and Martin D. Reid^**

^* Research Department of Human Nutrition, The Royal Veterinary and Agricultural University, Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark; School of Applied Sciences, The Robert Gordon University, St. Andrew St., Aberdeen, AB25 1HG, Scotland, United Kingdom; and ^** The Rowett Research Institute, Greenburn Road, Bucksburn, Aberdeen, AB2 9SB Scotland, United Kingdom.

²To whom correspondence should be addressed.

Oat bran has a high phytate content and a low or inactivated phytase activity. A high intake of oat bran could therefore result in an impaired absorption of trace elements. The effect of a mean daily intake of 142 g of oat bran (102 g/10 MJ) on absorption of zinc was evaluated by the use of stable isotopes and fecal monitoring in 12 healthy subjects (6 males and 6 females). Each subject participated in two separate diet periods each of 21 d with identical low-fiber diets and with oat bran added in one of the periods. The oat bran was incorporated into bread and served at three daily main meals. The intake of zinc and phytate per 10 MJ was 138 µmol (9.0 mg) and 0.5 mmol, respectively, in the low-fiber period and 225 µmol (14.7 mg) and 4.0 mmol, respectively, in the oat bran period. Stable isotopes of zinc (⁷⁰Zn) were added to the diets at d 7 of each period. The fractional absorptions (means ± SD) of zinc from the low-fiber and oat bran diets were 0.48 ± 0.11 and 0.40 ± 0.15 (P = 0.07), respectively. The higher zinc content in the oat bran period resulted in a greater amount of zinc absorbed (64 ± 19 µmol and 99 ± 51 µmol, respectively, P = 0.009). Balance data suggest that the higher absorbed amount of zinc resulted in correspondingly higher intestinal endogenous excretion of zinc. In conclusion, the absorption of zinc was high and not affected by addition of oat bran.

KEY WORDS: • oat bran • zinc • phytate • stable isotopes • humans

This article has been cited by other articles:

				V. Ducros, J. Arnaud, M. Tahiri, C. Coudray, F. Bornet, C. Bouteloup-Demange, F. Brouns, Y. Rayssiguier, and A. M. Roussel Influence of Short-Chain Fructo-Oligosaccharides (sc-FOS) on Absorption of Cu, Zn, and Se in Healthy Postmenopausal Women J. Am. Coll. Nutr., February 1, 2005; 24(1): 30 - 37. [Abstract] [Full Text] [PDF]

				I. Vucenik and A. M. Shamsuddin Cancer Inhibition by Inositol Hexaphosphate (IP6) and Inositol: From Laboratory to Clinic J. Nutr., November 1, 2003; 133(11): 3778S - 3784. [Abstract] [Full Text] [PDF]

				K. M. Behall, J. C. Howe, and R. A. Anderson Apparent Mineral Retention Is Similar in Control and Hyperinsulinemic Men after Consumption of High Amylose Cornstarch J. Nutr., July 1, 2002; 132(7): 1886 - 1891. [Abstract] [Full Text] [PDF]

				K. Y. Patterson and C. Veillon Stable Isotopes of Minerals as Metabolic Tracers in Human Nutrition Research Experimental Biology and Medicine, April 1, 2001; 226(4): 271 - 282. [Abstract] [Full Text]