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Astragalus membranaceus polysaccharide-iron (III) complex (APS-iron) was synthesized and characterized. Based on single factor and response surface optimization experiments of APS-iron (III) complex synthesis, the optimum conditions of APS-iron (III) complex were obtained as follows: the reaction temperature 89.46°C, pH 8.16, reaction time 46.04min and ratio of catalyst to APS 0.75, respectively....
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