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1、薏苡非种仁部位及不同产地不同采收期茎中多糖的含量测定【摘要】目的对薏苡非种仁部位（根、茎和叶）及不同产地、不同采收期茎的多糖进行含量测定，并进行品质评价，寻找薏苡新的药用部位。方法采用苯酚-硫酸法。结果非种仁部位中多糖含量分别为：根54.374mg·g-1，茎56.9322mg·g-1和叶52.7549mg·g-1；不同产地茎中多糖含量分别为：陕西汉中汉台区82.7759mg·g-1，广西恭城79.7661mg·g-1，云南大度岗74.3052mg·g-1，四川峨眉山69.89mg·g-1，四川成都中医药大学植物园63.3784mg
2、·g-1，四川新津59.6986mg·g-1，云南景洪55.7829mg·g-1，湖北恩施52.7549mg·g-1，四川大学华西植物园38.5851mg·g-1；不同采收期（6～11月）茎中多糖含量呈递增趋势。结论非种仁部位多糖含量中，根、茎和叶的含量差异不大，并稳定在比较高的水平上，从资源的综合和可持续利用的角度考虑，建议薏苡的非种仁部位可作为薏苡多糖的稳定来源，可以入药；不同产地中薏苡茎的多糖含量差异较大，说明产地的气候、土壤等条件对薏苡多糖含量有明显影响；不同采收期（6～11月）中薏苡茎的多糖含量随着时间的推移而逐渐增加，表
3、明薏苡花期（7～9月）、果期（8～10月）间多糖积累增多。【关键词】薏苡；根;茎;叶；多糖；含量 Abstract：ObjectiveTodeterminepolysaccharidesfromroot,stemandleafofC.lacryma-jobiL.var.mayuen(Roman.)Stapf,evaluateitsqualityandfindneedicalrecource.MethodsThephenol-sulfuricacidmethodroot,stemandleafofC.lacryma-jobiL.va
4、r.mayuen(Roman.)Stapfg·g-1,56.9322mg·g-1and52.7549mg·g-1respectively.Thecontentofpolysaccharidesindifferentplacesg·g-1,GongchenginGuangxiProvinceof79.7661mg·g-1,DaduganginYunnanProvinceof74.3052mg·g-1,EmeiMountaininSichuanProvinceof69.89mg·g-1,theMedicalPlantGardenofTr
5、aditionalChineseMedicalUniversityinSichuanProvinceof63.3784mg·g-1,XinjininSichuanProvinceof59.6986mg·g-1,JinghonginYunnanProvinceof55.7829mg·g-1,EnshiinHubeiProvinceof52.7549mg·g-1,theedicalyPlantGardenofSichuanUniversityinSichuanProvinceof38.5851mg·g-1.Thecontentofpol
6、ysaccharidesindifferentcollectingtime(fromJunetoNovember)ethodissimple,accurate,reproducibleandsuitableforthedeterminationofpolysaccharidesinC.lacryma-jobiL.var.mayuen(Roman.)Stapf.Consideredthepolysaccharides,theroot,stemandleafofC.lacryma-jobiL.var.mayuen(Roman.)Stap
7、fcanbemedicalusedforpolysaccharideresources.Thecontentofpolysaccharidesindifferentplacesisdifferent,anditscontentcanbeobviouslyinfluencedbyitssurroundings.Theresultsindifferentcollectingtime(fromJunetoNovember)shoitsfloJulytoSeptember)andfruitphase(fromAugusttoOctober)
8、isincreasing. Keya-jobiL.var.mayuen(Roman.)Stapf;Root;Stem;Leaf；Polysaccharides;Content薏苡为禾本科薏苡属植物薏苡Coixlachrymal-jo
