Phytate × Calcium/Zinc Molar Ratios: Are They Predictive of Zinc Bioavailability?

ELIZABETH J. FORDYCE; RICHARD M. FORBES; KELLY R. ROBBINS; JOHN W. ERDMAN

doi:10.1111/j.1365-2621.1987.tb06634.x

Phytate × Calcium/Zinc Molar Ratios: Are They Predictive of Zinc Bioavailability?

ELIZABETH J. FORDYCE, RICHARD M. FORBES, KELLY R. ROBBINS, JOHN W. ERDMAN

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Abstract

The utility of the phytate/zinc and phytate × calcium/zinc molar ratios for predicting zinc bioavailability from processed soybean foods was investigated. Weight gain and bone zinc accumulation in rats fed various soy protein products were plotted against the calculated molar ratios. The phytate × calcium/zinc ratio was a better predictor of zinc bioavailability in similarly processed products than was the phytate/ zinc ratio. However, in some cases the phytate × calcium/zinc ratio was not effective since some processing procedures apparently altered binding of phytic acid to minerals and other food components.

Original language	English (US)
Pages (from-to)	440-444
Number of pages	5
Journal	Journal of food science
Volume	52
Issue number	2
DOIs	https://doi.org/10.1111/j.1365-2621.1987.tb06634.x
State	Published - Mar 1987

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Food Science

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10.1111/j.1365-2621.1987.tb06634.x

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title = "Phytate × Calcium/Zinc Molar Ratios: Are They Predictive of Zinc Bioavailability?",

abstract = "The utility of the phytate/zinc and phytate × calcium/zinc molar ratios for predicting zinc bioavailability from processed soybean foods was investigated. Weight gain and bone zinc accumulation in rats fed various soy protein products were plotted against the calculated molar ratios. The phytate × calcium/zinc ratio was a better predictor of zinc bioavailability in similarly processed products than was the phytate/ zinc ratio. However, in some cases the phytate × calcium/zinc ratio was not effective since some processing procedures apparently altered binding of phytic acid to minerals and other food components.",

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AU - ERDMAN, JOHN W.

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AB - The utility of the phytate/zinc and phytate × calcium/zinc molar ratios for predicting zinc bioavailability from processed soybean foods was investigated. Weight gain and bone zinc accumulation in rats fed various soy protein products were plotted against the calculated molar ratios. The phytate × calcium/zinc ratio was a better predictor of zinc bioavailability in similarly processed products than was the phytate/ zinc ratio. However, in some cases the phytate × calcium/zinc ratio was not effective since some processing procedures apparently altered binding of phytic acid to minerals and other food components.

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Phytate × Calcium/Zinc Molar Ratios: Are They Predictive of Zinc Bioavailability?

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