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1.中国科学院西北高原生物研究所 青海省青藏高原特色生物资源研究重点实验室与中国科学院藏药研究重点实验室,青海 西宁 810008
2.中国科学院大学,北京 100049
3.青海民族大学 药学院,青海 西宁 810007
孙 菁,博士,研究员,研究方向:中药质量评价与控制,E-mail:sunj@nwipb.cas.cn
纸质出版日期:2024-11-15,
收稿日期:2024-06-19,
修回日期:2024-07-20,
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冯丹,罗西,臧利艳,李佳敏,宋晓铭,孙菁.唐古特大黄多指标关键质量属性近红外光谱评价研究[J].分析测试学报,2024,43(11):1697-1708.
FENG Dan,LUO Xi,ZANG Li-yan,LI Jia-min,SONG Xiao-ming,SUN Jing.Quality Evaluation of Multi-index Key Quality Attributes of Rheum tanguticum by Near Infrared Spectroscopy Coupled with Chemometrics[J].Journal of Instrumental Analysis,2024,43(11):1697-1708.
冯丹,罗西,臧利艳,李佳敏,宋晓铭,孙菁.唐古特大黄多指标关键质量属性近红外光谱评价研究[J].分析测试学报,2024,43(11):1697-1708. DOI: 10.12452/j.fxcsxb.240619151.
FENG Dan,LUO Xi,ZANG Li-yan,LI Jia-min,SONG Xiao-ming,SUN Jing.Quality Evaluation of Multi-index Key Quality Attributes of Rheum tanguticum by Near Infrared Spectroscopy Coupled with Chemometrics[J].Journal of Instrumental Analysis,2024,43(11):1697-1708. DOI: 10.12452/j.fxcsxb.240619151.
利用近红外光谱技术,构建了唐古特大黄药材多个关键质量属性的快速评价方法。按照中国药典与日本药典方法,分别测定唐古特大黄中水分、灰分、浸出物、结合蒽醌、游离蒽醌、番泻苷A与番泻苷B七个关键质量属性的含量,结果均符合药典规定的标准,样品含水量较低,有助于药材贮存,番泻苷A与番泻苷B的含量较高,说明唐古特大黄具有较好泻下作用的物质基础。同时,利用隶属函数、主成分分析与相关分析对其质量进行综合评价,发现不同活性成分的含量之间存在较大相关性,而灰分、含水量与部分活性成分呈现负相关,为确保唐古特大黄药材的品质,需要控制含水量与灰分的范围。在此基础上,采用近红外光谱技术结合化学计量学方法,通过优化异常值剔除、预处理方法、建模波段等建模条件,建立了上述包括隶属函数在内的8项评价指标的同步定量检测模型。在模型优化过程中,各检测指标的最佳建模条件均不相同。经优化后,以水分、番泻苷B的模型评价指标最优,残差预测偏差(RPD)值均大于6;番泻苷A、隶属函数值的模型指标次之,RPD值均大于3;浸出物、游离蒽醌的RPD值大于2,总灰分、总蒽醌的模型RPD值较低。外部验证结果显示,所有指标预测率均达到85%以上,其中水分、游离蒽醌、总蒽醌的预测率达到90%以上,说明所建模型对未知样品的预测能力较强。隶属函数值模型的成功建立,可以实现唐古特大黄综合品质的单模型快速评价。近红外光谱技术结合化学计量学方法可实现唐古特大黄品质中多指标关键质量属性的快速准确检测,为该药材的质量评价与控制提供技术支撑。
To establish a rapid evaluation method for seven multi-index key quality attributes of an traditional Chinese medicine
Rheum tanguticum
using near infrared spectroscopy(NIR),the methodologies outlined in the Chinese and Japanese pharmacopoeias were performed. The contents of seven multi-index key quality attributes of
Rh. tanguticum
were determined respectively,including moisture,ash,extract,bound anthraquinone,free anthraquinone,sennoside A and sennoside B. The results showed that they were in accordance with the standards of the aboved pharmacopoeia. The low water content of the samples was conducive to the storage of medicinal materials. The contents of sennoside A and sennoside B presented high level,indicating that
Rh. tanguticum
had a material basis for good catharsis. At the same time,membership function,principal component analysis and correlation analysis were used to comprehensively evaluate its quality. It was revealed that a great correlation between the contents of different active components was found,while ash and water content exhibited a negative correlation with certain some components. In order to further ensure the quality of this herbal medicine,it is necessary to control the range of water content and ash content. Thus,a synchronous quantitative detection model for the aforementioned eight evaluation indices,including the mem
bership function,was established by integrating NIR with chemometrics and optimizing modeling conditions such as outlier elimination,preprocessing methods and modeling bands. In the process of model optimization,the optimal modeling conditions of each detection index were different. The evaluation metrics for water and sennoside B demonstrated the highest performance,with residual prediction deviation(RPD) values exceeding 6. The model indexes of sennoside A and membership function values were the second,and the RPD values were all greater than 3. The RPD values for extracts and free anthraquinones were above 2,while the model RPD values for total ash and total anthraquinones were comparatively lower. After external verification,the prediction rate of all indicators reached more than 85%,and the prediction rate of moisture,free anthraquinone and total anthraquinone reached more than 90%,indicating that the model had a strong prediction ability for unknown
Rh. tanguticum
samples. The successful establishment of the membership function value model facilitates the rapid and comprehensive quality evaluation of
Rh. tanguticum
. NIR combined with chemometrics methods can achieve the rapid and accurate detection of multi-index key quality attributes of
Rh. tanguticum
,and provide technical support for the quality evaluation and control of this medicinal material.
近红外光谱质量评价模型构建与优化多指标关键质量属性唐古特大黄
near infrared spectrumquality evaluationmodel construction and optimizationmulti-index key quality attributeRheum tanguticum
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