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

鐵是人和動(dòng)物體所必需的微量元素之一，制造血紅素、肌紅蛋白和細(xì)胞色素都必須依賴鐵。鐵也是酶（過(guò)氧化氫酶）、非血紅素鐵（NHI）和硫蛋白（琥珀酸脫氫酶）的一個(gè)組分及其他酶的無(wú)機(jī)輔助因子。正常人體內(nèi)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(tài)的鐵在動(dòng)物機(jī)體內(nèi)的吸收轉(zhuǎn)化效率也有所不同，硫酸亞鐵價(jià)格便宜占有一定的優(yōu)勢(shì)，但易吸潮、口感差、吸收效率不高、易造成浪費(fèi)及環(huán)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(mén)冬氨酸亞鐵（Ferrous aspartate）等有機(jī)鐵源因其生物學(xué)效價(jià)高、吸收率高和利于環(huán)保等優(yōu)點(diǎn)正逐漸得到越來(lái)越多人的關(guān)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.