【摘要】 研究粘山药、毡毛薯蓣、光亮薯蓣地下部分糖类的含量，为深入研究和开发奠定基础。参照GB5009.7—2016(第一法)、GB5009.9—2016(第一法)、SN/T 4260—2015标准，适当修改制样方法，进行还原糖、淀粉、粗多糖含量的检测。粗多糖还原能力用还原碱性酒石酸铜相当葡萄糖含量进行检测和表达。实验结果表明：粘山药、毡毛薯蓣、光亮薯蓣，可溶于80%vol浓度乙醇的总还原糖含量分别为2.28%、6.31%、5.16%,淀粉含量分别为11.61%、12.55%、1.43%,粗多糖含量分别为20.38%、54.62%、39.27%。粘山药、毡毛薯蓣、光亮薯蓣中100 g粗多糖的还原能力相当于葡萄糖的质量分别为13.12、2.12、8.36 g。毡毛薯蓣地下块茎还原糖、淀粉、粗多糖含量非常显著地高于粘山药、光亮薯蓣；粘山药粗多糖的还原能力非常显著地大于毡毛薯蓣、光亮薯蓣；毡毛薯蓣、粘山药有潜在的开发应用前景。更多还原

【Abstract】 In order to lay a foundation for further relative research and development, the contents of saccharides are studied from the rhizome of dioscorea hemsleyi Prain et Burkill, dioscorea velutipes Prain et Burkill and dioscorea nitens. The contents of reducing sugar, starch and crude polysaccharide are detected according to GB5009.7—2016(first method), GB5009.9—2016(first method) and SN/T 4260—2015 respectively. Of course the sample method was appropriately modified. The reducing ability of crude polysaccharide was measured by the equivalent glucose content of reductive basic copper tartrate. Experimental results show that the contents of total reducing sugar soluble in 80%vol ethanol were 2.28%, 6.31% and 5.16%, starch contents are 11.61%, 12.55% and 1.43%, and crude polysaccharide contents are 20.38%, 54.62% and 39.27% respectively. The reducing capacity of 100 g crude polysaccharide is equivalent to 13.12 g, 2.12 g and 8.36 g of glucose in dioscorea hemsleyi Prain et Burkill, dioscorea velutipes Prain et Burkill and dioscorea nitens respectively. The contents of reducing sugar, starch and crude polysaccharide from the rhizome of dioscorea velutipes Prain et Burkill were significantly higher than those of dioscorea hemsleyi Prain et Burkill and dioscorea nitens. The reducing ability of crude polysaccharide of dioscorea hemsleyi Prain et Burkill was significantly higher than that of dioscorea velutipes Prain et Burkill and dioscorea nitens. Dioscorea velutipes Prain et Burkill and dioscorea hemsleyi Prain et Burkill have potential development and application prospects.更多还原