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- Soybean phytate content: effect on calcium
absorption
- Heaney RP, Weaver CM, Fitzsimmons ML
- Am J Clin Nutr 1991 Mar 53:3 745-7
- Abstract
- 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 less than 0.001).
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