氨基酸螯合鐵（Amino acid chelated iron）對人體的影響

鐵是人和動物體所必需的微量元素之一，制造血紅素、肌紅蛋白和細胞色素都必須依賴鐵。鐵也是酶（過氧化氫酶）、非血紅素鐵（NHI）和硫蛋白（琥珀酸脫氫酶）的一個組分及其他酶的無機輔助因子。正常人體內鐵的含量為35～60 mg/kg，其中 70%存在于血紅蛋白，3%～5%存在于肌紅蛋白，15%存在于鐵貯藏蛋白-鐵蛋白和血鐵黃素。不同形態的鐵在動物機體內的吸收轉化效率也有所不同，硫酸亞鐵價格便宜占有一定的優勢，但易吸潮、口感差、吸收效率不高、易造成浪費及環境污染。甘氨酸鐵（Iron glycine）、谷氨酸亞鐵（Ferrous glutamate）、蛋氨酸亞鐵（Ferrous methionine）、天門冬氨酸亞鐵（Ferrous aspartate）等有機鐵源因其生物學效價高、吸收率高和利于環保等優點正逐漸得到越來越多人的關注。

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Iron is one of the essential trace elements in human and animal body, and the production of heme, myoglobin and cytochrome must depend on iron. Iron is also a component of enzymes (catalase), non-heme iron (NHI) and thioproteins (succinate dehydrogenase) and an inorganic cofactor of other enzymes. The content of iron in normal human body is 35 ~ 60 mg/kg, of which 70% exists in hemoglobin, 3% ~ 5% exists in myoglobin, 15% exists in iron storage proteins - ferritin and hemosiderin. The absorption and conversion efficiency of different forms of iron in the animal body is also different, and ferrous sulfate is cheap and occupies a certain advantage, but it is easy to absorb moisture, poor taste, low absorption efficiency, easy to cause waste and environmental pollution. Organic iron sources such as iron glycine, ferrous glutamate, ferrous methionine and ferrous aspartate are getting more and more attention because of their advantages such as high biological potency, high absorption rate and beneficial to environmental protection.