1.国家药品监督管理局药品快速检验技术重点实验室(广东省药品检验所),广东 广州 510663
2.广东药科大学 广东省代谢病中西医结合研究中心(中医药研究所),广东 广州 510006
3.弘正道(中国)中药研究有限公司,广东 广州 510665
4.陕西科技大学 电子信息与人工智能学院,陕西 西安 710021
郭拓,博士,讲师,研究方向:机器学习与过程分析技术研究,E-mail:guotuonwpu@126.com
肖雪,博士,副研究员,研究方向:中药分析与质量评价研究,E-mail:erxiaohappy@163.com
纸质出版日期:2024-03-15,
收稿日期:2023-09-27,
修回日期:2023-10-20,
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贾彬,陈启文,赖嘉敏等.近红外光谱法快速检测何首乌炮制过程中多糖含量的研究[J].分析测试学报,2024,43(03):481-488.
JIA Bin,CHEN Qi-wen,LAI Jia-min,et al.Determination of Polygoni Multiflori Polysaccharide Contents during Concoction by Near Infrared Spectroscopy[J].Journal of Instrumental Analysis,2024,43(03):481-488.
贾彬,陈启文,赖嘉敏等.近红外光谱法快速检测何首乌炮制过程中多糖含量的研究[J].分析测试学报,2024,43(03):481-488. DOI: 10.12452/j.fxcsxb.23092704.
JIA Bin,CHEN Qi-wen,LAI Jia-min,et al.Determination of Polygoni Multiflori Polysaccharide Contents during Concoction by Near Infrared Spectroscopy[J].Journal of Instrumental Analysis,2024,43(03):481-488. DOI: 10.12452/j.fxcsxb.23092704.
该研究基于近红外光谱技术建立了何首乌在蒸制过程中多糖含量变化的快速定量模型。采用蒽酮-浓硫酸法测定了不同蒸制时间何首乌的多糖含量并结合采集的近红外光谱数据建立模型,以校正集相关系数(
R
2
c
)、预测集相关系数(
R
2
p
)、交叉验证集均方根误差(RMSECV)和预测集均方根误差(RMSEP)作为评价指标,考察了不同预处理方法和变量筛选方法的效果。结果显示,随着蒸制时间的延长,何首乌多糖含量先上升后下降并趋于平稳,采用平滑+变量标准化+随机蛙跳变量筛选建立的偏最小二乘法回归模型的
R
2
c
=0.96,RMSECV=0.74,
R
2
p
=0.96,RMSEP=0.28;外部预测相对偏差小于3.0%。所建立的多糖含量定量模型质量较高,预测能力较强,可为探索何首乌炮制工艺标准化及质量评价提供参考。
A rapid quantitative model was established for the changes in polysaccharide content of
Polygoni Multiflori
during the steaming process using near infrared spectroscopy(NIRS) in this study. The polysaccharide content of different steamed
Polygoni Multiflori
samples at different steaming times was determined using the anthrone-sulfuric acid method,and a model was built using the collected NIRS data. The evaluation criteria for the model included the correlation coefficient of the calibration set(
R
2
c
),the correlation coefficient of the prediction set(
R
2
p
),the root mean square error of cross validation(RMSECV),and the root mean square error of prediction(RMSEP). The effects of different preprocessing methods and variable selection methods were investigated. The results showed that the polysaccharide content of
Polygoni Multiflori
initially increased and then decreased,eventually reaching a steady state with prolonged steaming time. The partial least squares regression model built using smoothing,variable standardization,and random frog leaping variable selection methods achieved satisfactory performance with
R
2
c
of 0.96,RMSECV of 0.74,
R
2
p
of 0.96,and RMSEP of 0.28. The relative deviation of external prediction was less than 3.0%. The established quantitative model for polysaccharide content exhibited high quality and strong prediction ability,providing reference for the standardization and quality evaluation of the steaming process of
Polygoni Multiflori.
何首乌多糖近红外光谱无损测定蒸制过程
Polygoni Multifloripolysaccharidenear infrared spectroscopynondestructive determinationsteaming process
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