[Objective] To study the best extraction conditions of polysaccharide from corn stalk , so as to provide basis for the further development and utilization of com stalk resources. [ Method ] The best conditions for the hot water extraction of polysaccharide from corn stalk were determined by orthogonal experiment and single factor teat. [ Result] The influential degree of each factor on the extraction of polyaaccharide decreased in the order of extraction time > extraction temperature > material-water ratio. The best extraction conditions were 80 t of temperature , 3 h of time and 1: 30 (g/ml) of material-water ratio. [ Conclusion ] The hot water extraction method is good for the polysaccharide extraction from corn stalk, and anthrone-sulfuric acid method is practical for determining the extraction rate of poly&accharide, the results are stable.%[目的]研究玉米茎秆多糖提取的最优条件,为玉米茎秆资源的深入开发利用提供试验依据.[方法]通过单因素和正交试验,以多糖得率为指标确定玉米茎秆多糖热水浸提的最优条件.[结果]确定提取时间、温度、料水比在玉米茎秆多糖提取中影响因素的大小顺序为:提取时间＞温度＞料水比.玉米茎秆多糖提取最佳工艺参数组合为:温度80℃,提取时间3h,料水比1∶30g/ml.[结论]热水浸提法提取玉米茎秆多糖效果较好,以蒽酮-硫酸法测定多糖提取率方法可行,结果稳定.
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