Recker R R, Bammi A, Barger-Lux M J, Heaney R P
Department of Internal Medicine, Creighton University School of Medicine, Omaha, NE.
Am J Clin Nutr. 1988 Jan;47(1):93-5. doi: 10.1093/ajcn/47.1.93.
Whole milk, chocolate milk, yogurt, imitation milk (prepared from dairy and nondairy products), cheese, and calcium carbonate were labeled with 45Ca and administered as a series of test meals to 10 healthy postmenopausal women. Carrier Ca content of the test meals was held constant at 250 mg and subjects fasted before each meal. The absorbability of Ca from the six sources was compared by measuring fractional absorption by the double isotope method. The mean absorption values for all six sources were tightly clustered between 21 and 26% and none was significantly different from the others using one-way analysis of variance. We conclude that none of the sources was significantly superior or inferior to the others.
全脂牛奶、巧克力牛奶、酸奶、仿乳（由乳制品和非乳制品制成）、奶酪和碳酸钙用45Ca进行标记，并作为一系列测试餐给予10名健康的绝经后女性。测试餐中的载体钙含量保持在250毫克不变，且每位受试者在每餐之前禁食。通过双同位素法测量分数吸收率来比较六种来源钙的吸收情况。所有六种来源的平均吸收值紧密聚集在21%至26%之间，使用单因素方差分析时，没有一种来源与其他来源有显著差异。我们得出结论，没有一种来源明显优于或劣于其他来源。
