Soybean phytate content: Effect on calcium absorption

R. P. Heaney, C. M. Weaver, M. L. Fitzsimmons

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Absorption of calcium from soybeans with low and high phytate contents, intrinsically labeled with 45Ca, was measured in 16 normal women and compared in 15 of these same subjects with absorption of calcium from labeled milk. The average test load of calcium for all three sources was 2.45 mmol. Fractional calcium absorption (±SD) from the high-phytate soybeans averaged 0.310 ± 0.070; from the low phytate soybeans, 0.414 ± 0.074; and from milk, 0.377 ± 0.056. The mean difference (±SEM) in fractional calcium absorption for the two phytate levels was 0.104 ± 0.014 (P <0.001).

Original languageEnglish
Pages (from-to)745-747
Number of pages3
JournalAmerican Journal of Clinical Nutrition
Issue number3
Publication statusPublished - 1991


All Science Journal Classification (ASJC) codes

  • Food Science
  • Medicine (miscellaneous)

Cite this

Heaney, R. P., Weaver, C. M., & Fitzsimmons, M. L. (1991). Soybean phytate content: Effect on calcium absorption. American Journal of Clinical Nutrition, 53(3), 745-747.