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化学计量学结合加权TOPSIS模型评价不同产地野鸦椿质量
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| 篇名： | 化学计量学结合加权TOPSIS模型评价不同产地野鸦椿质量 |
| TITLE： | Quality evaluation of Euscaphis japonica from different habitats using chemometrics combined with weighted TOPSIS model |
| 摘要： | 目的 评价不同产地野鸦椿的质量。方法以槲皮素为内参物，计算没食子酸、原儿茶酸、鞣花酸、异槲皮苷、紫云英苷和芹菜素的相对校正因子，以熊果酸为内参物计算野鸦椿酸、齐墩果酸、豆甾醇和β-谷甾醇的相对校正因子，采用一测多评（QAMS）法测定18批野鸦椿样品中12个成分的含量，并与外标法测定结果进行比较；同时检测其水溶性浸出物、醇溶性浸出物、总灰分、酸不溶性灰分含量。采用主成分分析、正交偏最小二乘法-判别分析（OPLS-DA）和加权逼近理想解排序（TOPSIS）法综合评价其质量。结果18批样品中12个成分的QAMS法与外标法测定结果差异不显著，但不同批次样品的含量差异较大。主成分分析和OPLS-DA结果均显示，S1～S7、S8～S12、S13～S18分别聚为一类；7个关键特征性成分的变量重要性投影值＞1，分别为野鸦椿酸、熊果酸、原儿茶酸、芹菜素、β-谷甾醇、异槲皮苷和齐墩果酸；加权TOPSIS法结果显示，18批样品的相对贴近度为0.2835～0.6441，其中重庆奉节县产野鸦椿的质量最优。结论所建含量测定方法准确可行，结合化学计量学及加权TOPSIS法可用于野鸦椿的质量评价。 |
| ABSTRACT： | OBJECTIVE To evaluate the quality of Euscaphis japonica from different habitats. METHODS The relative correction factors of gallic acid， protocatechuic acid， ellagic acid， isoquercitrin， astragalin and apigenin were calculated with quercetin as the internal reference； the relative correction factors of euscaphic acid， oleanolic acid， stigmasterol and β-sitosterol were also calculated with ursolic acid as the internal reference. The contents of 12 components in 18 batches of samples were calculated by QAMS method and were compared with external standard method. At the same time， the contents of water-soluble extract， alcohol-soluble extract， total ash and acid-insoluble ash were detected. The quality of E. japonica was evaluated by principal component analysis （PCA）， orthogonal partial least squares-discriminant analysis （OPLS-DA）， and weighted technique for order preference by similarity to ideal solution （TOPSIS） method. RESULTS There was no significant difference between the results of QAMS method and external standard method for the 12 components in the 18 batches of samples. However， notable content variations were observed among different batches of samples. The results of PCA and OPLS-DA showed that S1-S7， S8- S12， and S13-S18 were clustered into one category respectively. Seven key characteristic components variable importance in projection values ＞1， euscaphic acid， ursolic acid， protocatechuic acid， apigenin， β-sitosterol， isoquercitrin， and oleanolic acid， respectively. The analysis results of the weighted TOPSIS method revealed that the relative closeness for evaluating the quality of 18 batches of samples ranged from 0.283 5 to 0.644 1， with the samples of E. japonica from Fengjie， Chongqing， demonstrating the highest quality. CONCLUSIONS The established method is accurate and feasible， which can be used for the quality evaluation of E. japonica combined with chemometrics and weighted TOPSIS model. |
| 期刊： | 2025年第36卷第14期 |
| 作者： | 高雨秋；郑帅；于雪；邹桂华；张凯 |
| AUTHORS： | GAO Yuqiu，ZHENG Shuai，YU Xue，ZOU Guihua，ZHANG Kai |
| 关键字： | 野鸦椿；一测多评法；化学计量学；加权TOPSIS法；质量评价 |
| KEYWORDS： | Euscaphis japonica； QAMS； chemometrics； |
| 阅读数： | 2 次 |
| 本月下载数： | 0 次 |
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