[目的]研究山药多糖的提取工艺及其抗氧化活性.[方法]选择pH、料液比、提取温度和提取时间进行正变试验,优化山药多糖提取工艺条件,并分析了山药多糖对H2O2、O2-·及·OH的清除效果.[结果]试验得出,山药多糖的最佳提取工艺为pH 9,料液比1∶20g/ml,温度100℃,浸提时间1.5 h；且山药多糖具有较强的抗氧化活性作用.[结论]该研究为山药多糖的进一步开发利用提供了一定的理论依据.%[Objective] To study the extraction technology and antioxidant activity of yam polysaccharide. [Method] The orthogonal experiment was adopted to optimize the extraction conditions of pH, solid-liquid ratio, extraction temperature and extraction time, and the effect of yam polysaccharide to scavenge H2O2, O2- · And -OH was studied. [Result] The best extraction conditions were pH 9,1:20 g/ml of solid-liquid ratio, 100 ℃ of temperature, and 1.5 h of extraction time. And the extracted yam polysaccharide showed strong antioxidant activity. [Conclusion] The study provides certain theoretical basis for the further development and utilization of yam polysaccharide.
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