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Calcium phytate: Effect of ph and molar ratio on in vitro solubility

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Journal of the American Oil Chemists’ Society

Abstract

Calcium and phytate phosphorus were highly soluble below pH 4 at all molar ratios of calcium (Ca) to phytic acid (PA) studied (0.512.67). As pH is increased above 4, there is a drop in solubility, the magnitude of which depends on the Ca:PA molar ratio. Above pH 6, the greatest calcium precipitation occurred at molar ratios between 4 and 6.5; both lower and higher Ca:PA molar ratios showed higher calcium solubility. In contrast, phytate phosphorus solubility decreased in proportion to the Ca:PA molar ratio, showing essentially complete precipitation above the Ca:PA ratio of 5. The pentacalcium phytate salt probably predominates when calcium is not limiting. Under calcium-limiting conditions, the complexes resolubilize as the pH is increased above 7.

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References

  1. Cheryan, M., Crit. Rev. Food Sci. Nutr. 13:297 (1980).

    Article  CAS  Google Scholar 

  2. Jackman, R.H., and C.A. Black, Soil Sci. 72:179(1951).

    Article  CAS  Google Scholar 

  3. Saio, K., E. Koyama and T. Watanabe, Agric. Biol. Chem. 31:1195 (1967).

    CAS  Google Scholar 

  4. McKinney, L.L., W.F. Sollars and E.A. Setzkorn, J. Biol. Chem. 178:117(1949).

    CAS  Google Scholar 

  5. Hoff-Jorgensen, E., Det. Kgl. Dan. Vid Sel. Mat.-Fys. Medd. 21(7):1 (1944).

    Google Scholar 

  6. Crean, D.E.C., and D.R. Haisman, J. Sci. Food Agric. 14:823 (1963).

    Article  Google Scholar 

  7. Evans, W.J., and A.G. Pierce, JAOCS 58:850 (1981).

    Article  CAS  Google Scholar 

  8. Oberleas, D., and N. Moody, in Trace Element Metabolism in Man and Animals, edited by J.M. Howell, J.M. Gawthorne and C.L. White, Aust. Acad. Sci., Canberra, Australia, (1981), p. 129.

    Google Scholar 

  9. Tangkongchitr, U., P.A. Seib and R.C. Hoseney, Cereal Chem. 59:216(1982).

    CAS  Google Scholar 

  10. Rendleman, J.A., Cereal Chem. 59:302 (1982).

    CAS  Google Scholar 

  11. Bartlett, G.R., J. Biol. Chem. 234:466 (1959).

    CAS  Google Scholar 

  12. Ntailianas, H.A., and R.McL. Whitney, J. Dairy Sci. 47:19 (1964).

    Article  CAS  Google Scholar 

  13. Grynspan, F., M.S. thesis, University of Illinois, Urbana, IL, (1982).

    Google Scholar 

Download references

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Authors and Affiliations

  1. Department of Food Science, Dairy Manufactures Building, University of Illinois, 61801, Urbrana, IL

    Frida Grynspan & Munir Cheryan

Authors
  1. Frida Grynspan
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  2. Munir Cheryan
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Grynspan, F., Cheryan, M. Calcium phytate: Effect of ph and molar ratio on in vitro solubility. J Am Oil Chem Soc 60, 1761–1764 (1983). https://doi.org/10.1007/BF02680350

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  • DOI: https://doi.org/10.1007/BF02680350

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