基于灰色关联度模型的引种郁金质量评价

Quality Evaluation of Curcumae Radix Introduced in Zhongshan by Gray Relational Model

目的:建立郁金的灰色关联度模型,评价中山引种郁金样品的质量。方法:鉴于郁金类药材中挥发油和姜黄素为质量标志物(Q-marker),选择醇溶性浸出物、吉马酮、莪术二酮、姜黄素为综合评价指标,测定3个不同品种3个不同产地的72株中山引种郁金样品中的4种主要成分含量,采用灰色关联度法构建中山引种郁金质量的灰色关联度评价模型。结果:72株中山引种郁金样品的相对关联度(γ_i)在0. 262~0. 697,其中10个样品γ_i> 0. 450,37个样品γ_i<0. 300,表明不同产地不同品种的郁金引种后质量存在显著差异。浙江瑞安市马屿镇产的MY-W-4,MY-W-1的γ_i分别为0. 697,0. 525,质量最优。不同产地不同品种的γ_i的平均值在0. 281~0. 420,浙江马屿镇的温郁金样品的γ_i的平均值最大,质量总体水平最高,可作为郁金优质种源引种。结论:基于多指标成分构建的灰色关联度模型评价引种郁金质量,方法简单客观全面,可用于引种郁金质量评价,为优质种源的筛选提供了参考依据。

Objective:To establish the gray relational analysis for quality evaluation of the samples of Curcumae Radix introduced in Zhongshan.Method:With volatile oil and curcumin as Q-markers,and alcohol extract,germacrone,germacr-1(10)-ene-5,8-dione and curcumin as comprehensive evaluation index,the contents of the four main components in 72 samples of Curcumae Radix of 3 different varieties introduced in Zhongshan from 3 different regions were determined.The grey relational method was used to build the gray correlation evaluation model for Curcumae Radix introduced in Zhongshan.Result:The relative correlation degree(γ_i)of 72 samples was between 0.262 and 0.697,in whichγ_i was above 0.450 for 10 samples,and below0.300 for 37 samples,indicating great differences in the quality of Curcumae Radix after introduction.Theγ_iwas0.697 and 0.525 respectively for No.MY-W-4 and No.MY-W-1 from Curcumae Radix in Mayu with the best quality.The average values ofγ_ifor the samples of 3 different varieties from 3 different regions were between 0.281 and 0.420,and Mayu samples had the maximum average value,indicating that Mayu samples had the highest overall quality of,and could be introduced as excellent resources.Conclusion:The evaluation method combined with GRA method and multi-index quantification was simple,objective and comprehensive,and could be used to evaluate the quality of Curcumae Radix introduced in Zhongshan,so as to provide references for screening highquality provenance.