目的 研究"九蒸九晒"黄精炮制过程颜色变化与炮制火候及内外在质量指标的关联性,为"九蒸九晒"黄精炮制火候判断和质量控制提供参考。方法 在眼睛对"九蒸九晒"黄精样品外观性状主观判断的基础上,采用色差仪对"九蒸九晒"黄精样品颜色进行客观量化,运用SPSS 21.0软件分析颜色与炮制火候和内外在质量指标之间的相关程度,采用三角形面积法建立"九蒸九晒"黄精样品质量综合评价指数(QI)。结果 在"九蒸九晒"黄精炮制过程中,样品表观颜色加深,色度值增加;通过相关性分析得出样品颜色与炮制火候和内外在质量指标呈显著相关;炮制至"五蒸五晒"时样品QI值最高,达2.61。结论 基于颜色变化能够实现"九蒸九晒"黄精炮制火候的客观判别,将颜色与炮制火候和内外在质控标准有效结合为"九蒸九晒"黄精炮制过程的质量控制和终点判定奠定基础。

Objective To study the correlation between color change, processing degree and internal and external quality indicators in the preparation of Polygonatum cyrtonema processed by "nine-steaming and nine-sun-curing", so as to provide a reference for processing degree judgment and quality control of P. cyrtonema processed by "nine-steaming and nine-sun-curing". Methods Based on human vision subjective judgment for the appearance traits of P. cyrtonema samples processed by "nine-steaming and nine-sun-curing", the color of P. cyrtonema samples processed by "nine-steaming and nine-sun-curing" was objectively quantified by colorimeter, SPSS 21.0 was used to analyze the relationship between the color, processing degree and internal and external quality indicators, the quality index of P. cyrtonema samples processed by "nine-steaming and nine-sun-curing" by Triangle area method was established. Results During the processing of P. cyrtonema processed by "nine-steaming and nine-sun-curing", the color value of the powder increased, the apparent color of the sample became darker. The results of correlation analysis showed that there was a high correlation between the color, processing degree and internal and external quality indicators. The comprehensive evaluation index was the highest (2.61) when processed to steam for five times and shine for five times. Conclusion It can achieve objective identification of P. cyrtonema processed by "nine-steaming and nine-sun-curing" on the basis of color change. It is inferred that the effective combination of the color, processing degree and internal and external quality control standards can lay the foundation for the quality control and end-point determination during the processing of P. cyrtonema processed by "nine-steaming and nine-sun-curing".

R283.1

国家重点研发计划资助（2018YFC1707200）；安徽省高等学校自然科学研究项目（KJ2020A0421）；六安市产学研合作重大专项（六科〔2019〕19号）