Abstract
Five fiber-rich food sources, wheat bran (WB), rice bran (RB), oat fiber (OF), apple fiber (AF), and tomato fiber (TF) and their isolated insoluble fiber fractions were evaluated in vitro for their binding capacity for zinc (Zn) and copper (Cu). Endogenous Zn concentrations of the fibers varied from 11.0 µg/g for OF to 136.0 µg/g for WB, whereas Cu concentrations ranged from 1.0 µg/g for OF to 14.0 µg/g for WB. In all the fibers, total Cu bound was significantly higher than Zn. Total Cu bound ranged from 3687 µg/g for OF to 8019 µg/g and 8073 µg/g for WB and AF, whereas, bound Zn levels varied from 1213 µg/g for OF to 7121 µg/g and 7166 µg/g for WB and RB, respectively. Significantly more Zn and Cu were bound by the fiber fractions than the whole fibers, probably due to the exposure of more binding sites on the polymers during the fractionation process. Generally, the fiber components of all five fibers showed Cu and Zn binding capacities decreasing in the order; hemicellulose A>lignocellulose>lignin>cellulose. A strong correlation was seen between the combined effects of protein, hemicellulose, and lignin contents of the fibers versus total Zn binding capacity and a lesser correlation with Cu.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Camire AL, Clydesdale FM (1981) Effect of pH and heat treatment on the binding of calcium, magnesium, zinc, and iron to wheat bran and fractions of dietary fiber. J Food Sci 46: 548–551.
Mod RR, Ory RL, Morris NM, Normand FL, Saunder RM, Gumbmann MR (1985) Effect of rice hemicellulose and microcrystalline cellulose on selected minerals in the blood and feces of rats. J Cereal Sci 3: 87–93.
Platt SR, Clydesdale FM (1987) Mineral binding characteristics of lignin, guar gum, cellulose, pectin, and non-dietary fiber under simulated duodenal pH conditions. J Food Sci 52(5): 1414–1419.
Persson H, Nair BM, Frolich W, Nyman M, Asp NG (1987) Binding of mineral elements by some dietary fiber components - In vitro (II). Food Chem 26: 139–148.
Persson H, Nyman M, Liljeberg H, Önning G, Frolich W (1991) Binding of mineral elements by some dietary fiber components - In vitro (III). Food Chem 40: 169–178.
Garcia-Lopez JS, Lee K (1985) Iron binding by fiber is influenced by competing minerals. J Food Sci 50: 424–428.
Claye SS, Idouraine A, Weber CW (1996) Extraction and fractionation of insoluble fiber components from five fiber sources. Food Chem (in press).
Frδlich W (1993) Bioavailability of minerals from cereals. In Spiller GA, ed, CRC handbook of dietary fiber in human nutrition, pp 209–243. Boca Raton: CRC Press.
Schwartz R, Apgar BJ, Wien EM (1986) Apparent absorption and retention of calcium, copper, magnesium, manganese and zinc from a diet containing bran. Am J Clin Nutr 43: 444–455.
Bates CJ, Evans PH, Dardennes M, Prentice A, Lunn PG, Northprop-Clewes S, Cole TJ, Longman SC, Aggett PJ (1993) A trial of zinc supplementation in young rural Gambian children. Br J Nutr 69: 243–255.
Ferguson EL, Gibson RS, Thompson LU, Ounpuu S (1989) Dietary calcium, phytate and zinc intakes and the calcium, phytate and zinc molar ratios of the diets of a selected groups of East African children. Am J Clin Nutr 50: 1450–1456.
Watkinson M, Aggett PJ, Cole TJ (1985) Zinc and acute tropical ulcers in Ganbian children and adolescents. Am J Clin Nutr 41: 43–51.
Casterline JL Jr, Ku Y (1993) Binding of zinc to apple fiber, wheat bran and fiber components. J Food Sci 58(2): 365–368.
Leeds AR, Avenell A, eds (1985) Dietary fiber perspectives: Reviews and bibliography. London: J. Libbey Co.
Prohaska JR (1990) Biochemical changes in copper deficiency. J Nutr Biochem 1: 452–461.
Nelson SK, Huang CJ, Mathias MM, Allen KGD (1992). Copper-marginal and copper-deficient diets decrease aortic prostacyclin production and copper-dependent superoxide dismutase activity and increase aortic lipid peroxidation in rats. J Nutr 122: 2101–2108.
Hassel CA, Marchello JA, Lei KY (1983) Impaired glucose tolerance in copper-deficient rats. J Nutr 113: 1081–1083.
Branch WJ, Southgate DAT, James WPT (1975) Binding of copper by dietary fiber: It's relationship to unsubstituted uronic acids. Proc Nutr Sake 34: 120A.
Mod RR, Ory RL, Morris NM, Normand FL (1982) Interaction of rice hemicellulose with trace minerals and their release by digestive enzymes. Cereal Chem 59: 538–542.
Thompson SA, Weber CW (1979) Influence of pH on the binding of copper, zinc and iron in six fiber sources. J Food Sci 44: 752–754.
James WPT, Branch WJ, Southgate DAT (1978) Calcium binding by dietary fiber. Lancet 1978 (i): 638–639.
Nair BM, Asp NG, Nyman M, Persson H (1987) Binding of mineral elements by some dietary fiber components - In vitro (I). Food Chem 23: 295–303.
Idouraine A, Khan MJ, Weber CW (1996). In vitro mineral binding capacity of three wheat fiber sources for Ca, Mg, Cu and Zn by two different methods. Intern J Food Sci Nutr (in press).
Weber CW, Kohlhepp EA, Idouraine A, Ochoa LJ (1993) The binding capacity of eighteen fiber sources for calcium. J Agric Food Chem 41: 1931–1935.
AOAC (1990) Official methods of analysis, 15th edn. Arlington, VA: Association of Official Analytical Chemists, Inc.
Idouraine A, Hassani B, Claye SS, Weber CW (1995). In vitro binding capacity of various fiber sources for Zn Mg and Cu. J Agric Food Chem 43: 1580–1584.
Steel RGD, Torrie JH (1960) Principles and procedures of statistics. New York: McGraw-Hill.
Bruning JL, Kintz B, eds (1987) Computational handbook of statistics, pp 198–200. Scott, Foresman and Co. IL.
Parrott ME, Thrall BE (1978). Functional properties of various fibers: Physical properties. J Food Sci 43: 759–763, 766.
Luh BS, Barber S, Benedicto De Barber C (1991) Rice bran: chemistry and technology. In Luh BS ed, Rice 11. Utilization. New York: AVI Book Pub.
Platt SR, Clydesdale FM (1986) Effects of iron alone and in combination with calcium, zinc, and copper on the mineral-binding capacity of wheat bran. J Food Protection 49: 37–41.
Platt SR, Clydesdale FM (1985) Binding of iron by lignin in the presence of various concentrations of calcium, magnesium, and zinc. J Food Sci 50: 1322–1326.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Claye, S.S., Idouraine, A. & Weber, C.W. In vitro mineral binding capacity of five fiber sources and their insoluble components for copper and zinc. Plant Food Hum Nutr 49, 257–269 (1996). https://doi.org/10.1007/BF01091975
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01091975