Lönnerdal B
Department of Nutrition, University of California, Davis 95616, USA.
Am J Clin Nutr. 1996 May;63(5):821S-9S. doi: 10.1093/ajcn/63.5.821.
Copper intakes of infants and adults are often much lower than current recommendations. Copper status, however, appears adequate in most populations. This suggests that copper requirements may be lower than believed earlier, except those for premature infants, who have high requirements as a result of low prenatal stores. Infants, in general, constitute a risk group because milk is low in copper. Bioavailability of copper from human milk is high, whereas it is lower from cow milk and infant formula. Protein source, amino acids, carbohydrates, and ascorbic acid can affect copper availability, whereas phytate, zinc, and iron appear to have little influence on copper absorption, at least physiologic intakes.
婴儿和成人的铜摄入量往往远低于当前建议水平。然而，大多数人群的铜状况似乎充足。这表明铜的需求量可能比之前认为的要低，但早产儿除外，由于产前储备低，他们的需求量很高。一般来说，婴儿是一个风险群体，因为牛奶中的铜含量很低。母乳中铜的生物利用率很高，而牛奶和婴儿配方奶粉中的铜生物利用率较低。蛋白质来源、氨基酸、碳水化合物和抗坏血酸会影响铜的利用率，而植酸盐、锌和铁似乎对铜的吸收影响很小，至少在生理摄入量时是这样。
