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投稿时间：2019-10-08
投稿时间：2019-10-08
中文摘要: 采用热水浸提和超声辅助法制得玛咖多糖，通过检测玛咖多糖-Fe（Ⅲ）配合物在不同pH值、反应温度和时间的吸光度来优化玛咖多糖-Fe（Ⅲ）配合物的试验条件。结果表明：玛咖多糖-Fe（Ⅲ）配合物制备的最佳条件为pH9，反应温度70℃，反应时间150 min。采用铁盐的特殊反应、红外光谱及紫外-可见吸收光谱对玛咖多糖-Fe（Ⅲ）配合物进行定性表征；采用邻菲罗啉分光光度法测得产品中Fe（Ⅲ）含量为13.31%，精密度为0.46%。
中文关键词: 玛咖多糖-铁（Ⅲ）配合物 络合 表征 定性分析
Abstract:Maca polysaccharides were extracted by the methods of hot water and ultrasonic assistance.In order to gain the optimal condition for preparation of Maca polysaccharide-Fe（Ⅲ）complex，we detected the absorbance of samples though changing the temperature，pH and time.The optimal experimental condition was that when pH value was adjusted 9，the polysaccharide-Fe（Ⅲ）complex was prepared at 70℃ for 150 min.Using the characteristic reaction of ferric salt，infrared absorption spectra and ultraviolet-visible absorption spectra，we qualitatively characterized the property of Maca polysaccharide-Fe（Ⅲ）complex.The determination of ion in Maca was investigated by spectrometry with phenanthroline.The results suggested that the content of Fe（Ⅲ）in Maca polysaccharide-Fe（Ⅲ）complex was 13.31%and precision was 0.46%.
文章编号：202024014 中图分类号： 文献标志码：
基金项目:国家自然科学基金（21565033）
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