The invention discloses a composition comprising a mixture of oligosaccharides, said mixture containing at least one N-acetylated oligosaccharide, at least one sialylated oligosaccharide and at least one neutral oligosaccharide, for use in the promotion magnesium absorption and/or magnesium retention. The composition preferably further comprises at least one long chain polyunsaturated fatty acid and/or at least one probiotic. This composition is particularly adapted for use in infants notably preterm infants.本發明揭示包含寡糖混合物之組合物，該混合物含有至少一種N-乙醯基化寡糖、至少一種唾液酸基化寡糖及至少一種中性寡糖，該組合物用於促進鎂吸收及/或鎂滯留。該組合物較佳進一步包含至少一種長鏈多不飽和脂肪酸及/或至少一種益生菌。此組合物尤其適用於嬰兒、尤其早產嬰兒。
