Abstract
Nutritionally important bivalent metals combine with dietary fiber to form complexes that may decrease availability for absorption. Bremner (1970) found such complexes of manganese and zinc to be present in rye grass and digesta of sheep. Both metals were liberated by peptic digestion and treatment with fungal cellulase. The ability of fiber-rich Iranian wholemeal flat breads and of cellulose to bind firmly zinc, iron, and calcium in vitro was described by Reinhold and associates (Reinhold et al., 1975; Ismail-Beigi et al., 1977). Removal of phytate, previously thought to be the agent binding these metals, by acid extraction or action of phytate left the binding capability unimpaired. The binding of each of the metals was pH dependent. Thompson and Weber (1979) and Reilly (1979) confirmed the pH dependence of the binding of zinc and iron (and of copper) by dietary fibers from various sources and showed that the effect of pH was reversible. Eastwood and Kay (1979) listed cation exchange as an important property of dietary fiber that modifies excretion of minerals in feces.
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References
Bremner, I., 1970, The nature of trace element binding in herbage and gut contents, in: Trace Element Metabolism in Animals ( C. F. Mills, J. Bremner, J. Chesters, and J. Quarterman, eds.), Livingston, Edinburgh, pp. 366–369.
Eastwood, M. A., and Kay, R. M. 1979, An hypothesis for the action of fiber along the gastrointestinal tract, Am. J. Clin. Nutr. 32: 364–367.
Ismail-Beigi, F., Faraji, B., and Reinhold, J. G., 1977, Binding of zinc and iron to wheat bread, wheat bran and their components, Am. J. Clin. Nutr. 30: 1721–1725.
Kelsay, J. L., Behall, K. M., and Prather, E. S., 1979, Effect of fibers from fruits and vegetables on metabolic responses of human subjects. II. Calcium, magnesium, iron and silicon balances, Am. J. Clin. Nutr. 32: 1876–1880.
Oberleas, D., Muhrer, M. E., and O’Dell, B. L., 1966, Dietary metal-complexing agents and zinc availability in the rat, J. Nutr. 90: 56–62.
Perez Hidalgo, C., Chavez, V., and Madrigal, E. H., 1971, El problem nutricional de hierro en Mexico, Salud Publ. Mex. 13: 71–77.
Reilly, C., 1979, Zinc, iron and copper binding by dietary fiber, Biochem. Soc. Trans. 7: 202–204.
Reinhold, J. G., and García L., J. S., 1979, Fiber of the maize tortilla, Am. J. Clin. Nutr. 32: 1326–1329.
Reinhold, J. G., Parsa, A., Karimian, N., Hanunick, J. W., and Ismail-Beigi, F., 1974, Availability of zinc in leavened and unleavened wholemeal wheaten breads as measured by solubility and uptake by rat intestine in vitro, J. Nutr. 104: 976–982.
Reinhold, J. G., Ismail-Beigi, F., and Faraji, B., 1975, Fiber vs. phytate as determinant of the
availability of calcium, zinc and iron in breadstuffs, Nutr. Rep. Int. 12:75–85.
Reinhold, J. G., Garcia L., J. S., and Garzón, P., 1981, Binding of iron by fiber of wheat and
maize, Am. J. Clin. Nutr. 34: 1384–1391.
Robertson, J. B., 1978, The detergent system of fiber analysis, in: Topics in Dietary Fiber Research ( G. A. Spiller, ed.), Plenum Press, New York, pp. 11–42.
Robertson, J. B., and Van Soest, P. J., 1977, in: Proceedings, 69th Meeting, American Society for Animal Science, Madison, Wisconsin
Sahagian, B. M., Barlow, H. I., and Perry, Jr., H. M., 1966, Uptakes of zinc, cadmium and mercury by intact strips of rat intestine, J. Nutr. 90: 259–267.
Thompson, S. A., and Weber, C. W., 1979, Influence of pH on the binding of copper, zinc and iron in six fiber sources, J. Food Sc’. 44: 752–754.
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© 1982 Plenum Press, New York
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Reinhold, J.G., Pedro, M., García, L., Arias-Amado, L., Garzón, P. (1982). Dietary Fiber—Iron Interactions. In: Vahouny, G.V., Kritchevsky, D. (eds) Dietary Fiber in Health and Disease. GWUMC Department of Biochemistry Annual Spring Symposia. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-6850-6_11
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DOI: https://doi.org/10.1007/978-1-4615-6850-6_11
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