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1.湖南中医药大学 临床医学院,长沙 410208
2.湖南省脑科医院(湖南省第二人民医院),长沙 410007
谢明霞,博士,从事中药药效物质基础及其质量控制研究,E-mail:13116766@qq.com
彭清华,博士,教授,从事眼科相关物质基础研究,Tel:0731-88458010,E-mail:pqh410007@126.com; *
王枭冶,硕士,主任医师,从事药物质量控制研究,Tel:0731-88458230,E-mail:1821192004@qq.com
收稿日期:2021-11-05,
网络出版日期:2022-02-09,
纸质出版日期:2022-04-05
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谢明霞,李洁花,夏伯候等.基于UV-Vis指纹图谱结合化学计量学探讨不同采收期金银花的质量差异[J].中国实验方剂学杂志,2022,28(07):134-141.
XIE Ming-xia,LI Jie-hua,XIA Bo-hou,et al.Comparative Analysis of Lonicera japonica Flowerfrom Different Harvesting Periods Based on UV Fingerprint and Chemometrics[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(07):134-141.
谢明霞,李洁花,夏伯候等.基于UV-Vis指纹图谱结合化学计量学探讨不同采收期金银花的质量差异[J].中国实验方剂学杂志,2022,28(07):134-141. DOI: 10.13422/j.cnki.syfjx.20220511.
XIE Ming-xia,LI Jie-hua,XIA Bo-hou,et al.Comparative Analysis of Lonicera japonica Flowerfrom Different Harvesting Periods Based on UV Fingerprint and Chemometrics[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(07):134-141. DOI: 10.13422/j.cnki.syfjx.20220511.
目的
2
采用紫外-可见(UV-Vis)指纹图谱结合化学计量学方法,探讨不同采收期金银花药材的质量差异性。
方法
2
采集幼蕾期、青蕾期、白蕾期、银花期和金花期5个不同时期,共25个金银花样品,通过单因素优选确定最佳提取方法并在此条件下建立不同采收期金银花的UV-Vis指纹图谱。结果发现不同采收期的金银花样品的紫外指纹图谱在209、216、226、250、280、303、318、350 nm波长附近的吸光度均有显著差异。进一步将数据预处理、归一化等处理后,通过SIMCA-P
+
进行主成分分析(PCA)、偏最小二乘判别分析(PLS-DA)、正交偏最小二乘判别分析(OPLS-DA)等多元统计分析方法,建立金银花5个不同采收期的质量差异性模型。
结果
2
PCA和PLS-DA结果均显示5个不同采收期的金银花样品各自聚在相近位置,且具有显著的采收时间依赖性趋势,说明金银花不同采收期间所含化学成分的含量差异较大,与采收期相关性较高。OPLS-DA两两比较分析表明引起幼蕾期到青蕾期变化的成分可能为三萜类或挥发油类,含量均减少;青蕾期到白蕾期变化的成分可能为三萜(或环烯醚萜)类、挥发油、酚酸类或黄酮类,含量降低,该结果与绿原酸HPLC测定结果一致;白蕾期至银花期变化的成分可能为含量增加的环烯醚萜类和含量减少的三萜(或挥发油)类,银花期至金花期变化的成分主要有含量增加的三萜(或挥发油)类。
结论
2
该研究方法具有简单,可操控性强等特点,可为中药质量控制方法的研究提供参考。
Objective
2
To investigate the quality variation of
Lonicera japonica
flower from different harvesting periods by ultraviolet visible(UV-Vis) fingerprint combined with chemometrics.
Method
2
Twenty-five
L. japonica
flower samples from five harvesting periods, including young bud stage,green bud stage,white bud stage,silver and golden flower stages, were collected, with five samples for each stage. UV-Vis fingerprints of
L. japonica
flower from different harvesting periods were established in the context of the optimum extraction method based on the single factor experiment. The results showed that the absorption values at 209,216,226,250,280,303,318, and 350 nm were significantly different. Moreover,after data pretreatment and normalization,multivariate statistical analyses, such as principal component analysis (PCA),partial least squares discriminant analysis (PLS-DA),and orthogonal PLS-DA (OPLS-DA)were performed by SIMCA-P
+
to establish the quality variation model of
L. japonicas
flower from harvesting periods.
Result
2
As revealed by PCA and PLS-DA,
L. japonicas
flower samples from five harvesting periods were clustered separately and closely in a harvesting time-dependent manner, suggesting that the content of components contained in samples from different harvesting periods was highly distinct and correlated with harvesting periods. The pairwise comparison of OPLS-DA indicated that triterpenoids or volatile oils were the main components causing the changes from the young bud stage to the green bud stage,and the content of them decreased. The main components from the green bud stage to the white bud stage were triterpenoids (or iridoids),volatile oils,phenolic acids, or flavonoids,and the content of them decreased, which was consistent with the HPLC result of chlorogenic acid. From the white bud stage to the silver flower stage, the main components were iridoids (increasing in content) and triterpenoids (or volatile oils) (decreasing in content). The main altered components from the silver flower stage to the golden flower stage were triterpenoids (or volatile oils) whose content increased.
Conclusion
2
This method is simple and feasible, which can provide references for the quality control of Chinese medicine.
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