紫草工业生产中左旋紫草素的损失与检测合理性研究

目的:研究紫草渗漉液浓缩过程中左旋紫草素的损失原因并建立合理检测方法。方法:以左旋紫草素为指标,采用优化的色谱条件进行测定,分析检测环节中供试液含醇量、供试液生药浓度等对左旋紫草素含量测定的影响,在此基础上考察供试液合理制备方法及含量测定方法学,以建立合理的检测方法。结果:优化的色谱条件为:甲醇∶水(82∶18)为流动相,流速:1.0 mL/min,柱温为35℃,检测波长为516 nm,将分析时间由40 min缩短为24 min;供试液的含醇量显著影响左旋紫草素的含量测定结果,同等浓度的左旋紫草素,在低含醇量(<40%)供试液中的峰面积仅约为高含醇量(>70%)的20%～30%;供试液最好用40%以上乙醇配制,合理浓度范围为0.0167～0.083 g生药/mL;改进的检测方法具有良好的精密度、重现性和准确性。结论:研究首次发现供试液含醇量与左旋紫草素的色谱峰面积密切相关,并由此揭示紫草渗漉液回收乙醇过程中巨大损失的另一重要原因是:在检测环节中,供试液含醇量过低导致左旋紫草素的测定结果显著偏低,未能客观反映实际含量。新方法较现有方法能更有效、合理、客观的检测左旋紫草素,监测工艺过程,同时具有高效率、低成本的优...

Rationality for dynamic detection of shikonin of Arnerbia euchroma in industrial process

Objective: To discover reasons for great loss of shikonin during the concentrating process of percolate of Arnerbia euchroma(Royle) Johnst and develop a reasonable method for determination of shikonin.Methods: Shikonin was selected as index,optimized chromatographic condition was used for analyzing the affection of alcohol content and crude drug content of sample solution on determination of shikonin,furthermore,reasonable sample preparation and determination methodology was examined and defined.Results: Th...