马铃薯块茎中糖的分级康玉林，东惠茹，徐利群（中国农科院蔬菜花卉研究所１０００８１）马铃薯块茎中碳水化合物可分为淀粉、非淀粉性多糖和糖（蔗糖和还原糖），其中淀粉占块茎干物重的６０％～８０％，非淀粉性多糖占５．６％左右，蔗糖和还原糖则分别占干基的０．２５... Classification of sugars in potato tubers Kang Yulin, Dong Huiru, Xu Liqun (Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences 100081) Carbohydrates in potato tubers can be divided into starch, non-starch polysaccharides and sugars (sucrose and reducing sugar) Accounting for 60% ~ 80% of tuber dry weight, non-starch polysaccharide accounting for about 5.6%, sucrose and reducing sugar, respectively, accounted for 0.25% of dry basis.