Stekel A, Olivares M, Pizarro F, Chadud P, Lopez I, Amar M
Am J Clin Nutr. 1986 Jun;43(6):917-22. doi: 10.1093/ajcn/43.6.917.
The bioavailability of iron added to different types of cows' milk formulas was studied using mono-isotopic and double-isotopic methods in 396 infants aged 5-18 mo. All the milk formulas were fortified with ferrous sulfate in concentrations varying between 10 and 19 mg elemental iron/liter. Iron absorption from low-fat milks and full-fat milks varied from 2.9 to 5.1%. A higher range of mean absorption, 5.9 to 11.3%, was observed in the same formulas with the addition of ascorbic acid at concentrations of 100 mg/l or higher (up to 800 mg/l), demonstrating its enhancing effect on iron absorption in fortified milks. The amount of milk fat, the addition of carbohydrates, or acidification did not seem to influence iron absorption.
采用单同位素和双同位素方法，对396名5至18个月大的婴儿进行研究，以探讨添加到不同类型牛奶配方奶粉中的铁的生物利用度。所有牛奶配方奶粉均添加了硫酸亚铁，元素铁浓度在10至19毫克/升之间变化。低脂牛奶和全脂牛奶中铁的吸收率在2.9%至5.1%之间。在添加了浓度为100毫克/升或更高（最高800毫克/升）的抗坏血酸的相同配方奶粉中，观察到平均吸收率的较高范围，为5.9%至11.3%，这表明其对强化牛奶中铁吸收的增强作用。乳脂肪量、碳水化合物的添加或酸化似乎不影响铁的吸收。
