人们在实验中发现维生素C能促进膳食中非血红素铁的吸收,同时也发现植酸、草酸、单宁等能抑制非血红素铁的吸收,其中,茶对铁吸收的影响较为明显.茶对铁吸收的影响是1975年才发现的.科学家们用三氯化铁溶液作为铁来源给人服用.凡服用三氯化铁并饮水者,铁的吸收率为21.7%,而饮茶者,铁的吸收率仅为6.2%.后来,改用硫酸亚铁加维生素C作试验,饮水者铁的吸收率为30.9%,饮茶者则为11上%.科学家们也曾以面包作过试验.吃面包饮水者,面包中铁的吸收率为10.4%,饮茶 People in the experiment found that vitamin C can promote the absorption of non-heme iron in the diet, but also found that phytic acid, oxalic acid, tannin, etc. can inhibit the absorption of non-heme iron, of which, the effect of tea on iron absorption is more obvious. The effect on iron absorption was discovered only in 1975. Scientists use ferric chloride solution as an iron source for people who take ferric chloride and drink water, the iron absorption rate was 21.7%, and tea drinkers, The absorption rate of iron was only 6.2%. Later, the switch to ferrous sulfate and vitamin C for testing, drinking water absorption rate was 30.9%, tea drinkers was 11%. Scientists have also been tested with bread Eating bread, water, bread, iron absorption rate of 10.4%, tea