通过褐藻胶降解得到低聚褐藻胶,再与FeCl3配合反应制得系列褐藻胶合铁(Ⅲ)配合物. 其配合物易溶于水,在pH<12时稳定,易被维生素C还原而适宜人体吸收,粘均分子量为21.4和9.8 kDa的低聚褐藻胶合铁(Ⅲ)配合物中铁含量较高,可达约34%. 动物实验表明,喂药6~8 h后血清中铁的浓度明显升高,其生物利用度为1.067.
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