为全面解析芝麻茎秆中的营养成分，探究芝麻茎秆潜在的综合利用价值，为芝麻茎秆资源的开发和利用提供理论支撑，选取白芝麻、黑芝麻、金芝麻3类芝麻品种，对芝麻茎秆不同部位的粗纤维(纤维素、半纤维素和木质素)、灰分、总糖、粗蛋白、粗脂肪、氨基酸、脂肪酸和无机元素含量等进行测定并分析。结果表明，粗纤维和糖是芝麻茎秆的主要成分，其中白芝麻茎秆的粗纤维含量最高，可高达78.73%，且基部高于中部和稍部；黑芝麻茎秆总糖含量最高，且稍部高于其他部位。同时，芝麻茎秆含有丰富的氨基酸，种类高达15种，总氨基酸含量14.54～33.93 g/kg，其中以谷氨酸和天冬氨酸含量较高。此外，芝麻茎秆中矿质元素丰富，以钾含量（6.11～25.80 g/kg）最高，微量元素含量中以铁元素最高，可高达155.50 mg/kg。可见，不同类型芝麻茎秆化学成分差异较大，白芝麻茎秆粗纤维含量较高，可作为纤维化工及造纸原料，黑芝麻茎秆中糖和蛋白质含量较高，可优先选择与其他原料搭配作为饲料。

To comprehensively analyze the nutritional components of sesame stem,explore the potential comprehensive utilization value of sesame stem,and provide theoretical support for the development and utilization of sesame stem resources,three kinds of sesame varieties including white sesame,black sesame and golden sesame were selected.The contents of crude fiber (cellulose,hemicellulose and lignin),ash,total sugar,crude protein,crude fat,amino acids,fatty acids and inorganic elements in different parts of sesame stem were determined and analyzed.The results showed that crude cellulose and sugar were the main components of sesame stem,in which the crude cellulose content of white sesame stem was the highest,up to 78.73%,and the basal part was higher than the middle part and the top part,and the total sugar content of black sesame stem was the highest,and top part was higher than the other parts.Meanwhile,the sesame stem was rich in 15 kinds of amino acids,and the total amino acid content was 14.54—33.93 g/kg,among which glutamic acid and aspartic acid contents were the highest. In addition,the mineral elements were rich in the sesame stem,the content of potassium(6.11—25.80 g/kg) was the highest,and the content of iron was the highest in trace elements which reached 155.50mg/kg.Comprehensive analy sis shows that there are great differences in chemical composition of different types of sesame stem.The crude fiber content of white sesame stem is higher,which can be used as fiber chemical and papermaking raw materials. Black sesame stem has higher contents of sugar and protein,so it can be preferred to be mixed with other raw materials as fodder.