Study on the correlation between color and inner quality during the processing of <italic style="font-style: italic">Prunus mume</italic> carbon and its processing end point

YANG Linlin; XIN Jieping; LI Qian; ZHANG Haixia; AN Jinyi; CHEN Siyu; FENG Chunlan; WANG Tianshu; XU Xinfang; LI Xiangri

doi:10.6039/j.issn.1001-0408.2023.03.07

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Study on the correlation between color and inner quality during the processing of Prunus mume carbon and its processing end point

更新时间：2023-02-22

- Study on the correlation between color and inner quality during the processing of Prunus mume carbon and its processing end point
- ZHONGGUO YAOFANG Vol. 34, Issue 3, Pages: 289-293(2023)
- 作者机构：
  
  北京中医药大学中药学院/北京市中药品质评价重点实验室，北京　102488
- 作者简介：
- 基金信息：
- DOI：10.6039/j.issn.1001-0408.2023.03.07
  CLC： R283;R917
- Published：15 February 2023，
  
  Received：19 August 2022，
  
  Revised：17 January 2023，
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杨琳琳,辛洁萍,李千等.乌梅炭炮制过程中颜色与内在质量的相关性及其炮制终点研究 ^Δ[J].中国药房,2023,34(03):289-293.

YANG Linlin,XIN Jieping,LI Qian,et al.Study on the correlation between color and inner quality during the processing of Prunus mume carbon and its processing end point[J].ZHONGGUO YAOFANG,2023,34(03):289-293.
杨琳琳,辛洁萍,李千等.乌梅炭炮制过程中颜色与内在质量的相关性及其炮制终点研究 ^Δ[J].中国药房,2023,34(03):289-293. DOI： 10.6039/j.issn.1001-0408.2023.03.07.

YANG Linlin,XIN Jieping,LI Qian,et al.Study on the correlation between color and inner quality during the processing of Prunus mume carbon and its processing end point[J].ZHONGGUO YAOFANG,2023,34(03):289-293. DOI： 10.6039/j.issn.1001-0408.2023.03.07.

摘要

目的

研究乌梅炭炮制过程中颜色与内在质量的相关性，为乌梅炭炮制终点的确定提供参考。

方法

利用色差仪对乌梅炭粉末进行色度值测定，选择水分、水溶性浸出物、枸橼酸和鞣质含量对乌梅炭进行内在质量测定，分析不同炮制时间下乌梅炭色度值、水分、水溶性浸出物、枸橼酸和鞣质含量的动态变化趋势，对颜色和上述指标含量进行相关性分析，建立内在质量-色度值回归方程。同时结合主成分分析（PCA）、层次聚类分析（HCA）和偏最小二乘法判别分析（PLS-DA）法分析乌梅炭不同炮制时间的差异，以确定其炮制终点。

结果

随着炮制时间的延长，样品颜色逐渐加深；样品色度值

与

先升高后下降，色度值

与

下降，最终均趋于稳定；样品中水溶性浸出物、枸橼酸与鞣质含量均呈先升高后下降的趋势，样品中水分含量随炮制时间的延长而下降，最后趋于稳定。相关性分析结果显示，水分、水溶性浸出物、枸橼酸、鞣质含量与

、

均呈显著正相关（

＜0.001）。PCA及HCA结果显示，不同炮制时间的乌梅炭饮片可聚为2类：0～30 min炮制样品与40～60 min炮制样品。PLS-DA发现，水分和水溶性浸出物是乌梅炭炮制过程中的重要质量指标，

是乌梅炭炮制过程中的重要色度指标。炮制50 min和60 min样品的色度值无明显差别，炮制60 min样品的水分、水溶性浸出物、枸橼酸与鞣质含量小于炮制50 min的样品。

结论

乌梅炭颜色与内在质量具有一定相关性，乌梅炭的炒制应以40～50 min为宜。

Abstract

OBJECTIVE

To study the correlation between color and inner quality during the processing of

Prunus mume

carbon， and provide reference for the determination of processing end point of

P. mume

carbon.

METHODS

The chromaticity value of

P. mume

carbon powder was measured by colorimeter， and the inner quality of

P. mume

carbon was measured by selecting the contents of water， water-soluble extract， citric acid and tannin. The dynamic change trend of the chromaticity value， water， water-soluble extract， the contents of citric acid and tannin in

P. mume

carbon under different processing time was analyzed. The correlation between color and the above indexe contents was analyzed， and the regression equation of inner quality-chromaticity value was established. Combined with principal component analysis （PCA）， hierarchical cluster analysis （CA） and partial least squares discriminant analysis （PLS-DA）， the difference of

P. mume

carbon at different processing times was analyzed to determine the processing end point.

RESULTS

With the extension of processing time， the sample color gradually deepened； the chromaticity values

and

of the samples increased at first and then decreased， the chromaticity values

and

decreased， and finally all tended to be stable. The content of water-soluble extract， citric acid and tannin in the sample increased at first and then decreased， the water content of the sample decreased with time and finally stabilized. Correlation analysis showed that water， water-soluble extract， citric acid and tannin were positively correlated with

，

and

（

＜0.001）. PCA and HCA showed that

P. mume

carbon under different processing time could be clustered into two categories： the processed samples of 0-30 min and those of 40-60 min. PLS-DA showed that water and water-soluble extract were important quality indexes and

was an important chrominance index in the processing of

P. mume

carbon. The chromaticity value of the samples processed for 50 min and 60 min were not significantly different. The contents of water， water-soluble extract， citric acid and tannin in the samples processed for 60 min were less than those processed for 50 min.

CONCLUSIONS

There is a certain correlation between the color and the inner quality of

P. mume

carbon. The processing time of

P. mume

carbon should be 40-50 min.

关键词

乌梅炭炒炭色度值水分水溶性浸出物枸橼酸鞣质相关性分析

Keywords

carbonizedchromaticity valuewaterwater-soluble extractcitric acidtannincorrelation analysis

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Study on the correlation between color and inner quality during the processing of Prunus mume carbon and its processing end point

DOI：10.6039/j.issn.1001-0408.2023.03.07

摘要

Abstract

关键词

Keywords

references