毛黄堇药材的质量标准研究

摘要

OBJECTIVE:To establish the quality standard of Corydalis tomentella. METHODS:The medicinal material was identified in respects of property,microscopic characteristics and TLC. The contents of moisture,total ash and water soluble ex-tract were determined. The content of dehydrocavidine was determined by HPLC. The determination was performed on Agilent C18 column with mobile phase consisted of acetonitrile-phosphate buffer solution(containing 20 mmol/L monopotassium phosphate,10 mmol/L diethylamine,0.1% phosphoric acid)(28:72,V/V)at the flow rate of 1.0 mL/min. The detection wavelength was set at 347 nm,and the column temperature was 35 ℃. The sample size was 10 μL. RESULTS:The original plant is perennial herbs. The me-dicinal material often shrank into a ball. The main root was in conical shape;the rhizomes and roots were distinctly chapped;leaves curled and broken,and flowers were yellowish-white. The pollen grains were round-like in shape;square and columnar crys-tals were found;there were a large number of nonglandular hairs. The bordered pit,threaded and reticulate catheter were found;wood fiber was also found. TLC spots were clear and well-separated. The content of moisture were 7.5%-18.5%,total ash were 20.5%-26.2%,and extract were 29.9%-46.4%. The linear range of dehydrocavidine were 0.04008-2.4048 μg(r=0.9999);RSDs of precision,stability and reproducibility tests were lower than 2.0%. The recoveries were 95.6%-102.5%(RSD=2.3%,n=9). CONCLUSIONS:The established standard can be used for quality evaluation of C. tomentella.%目的:建立毛黄堇药材的质量标准.方法:从原植物形态、性状特征、显微特征、薄层色谱(TLC)方面对药材进行定性鉴别;检测药材水分、总灰分和水浸出物的含量;采用高效液相色谱法测定药材中脱氢卡维丁的含量:色谱柱为Agilent C18,流动相为乙腈-磷酸盐缓冲液(含20 mmol/L磷酸二氢钾、10 mmol/L二乙胺、0.1%磷酸)(28:72,V/V),流速为1.0 mL/min,检测波长为347 nm,柱温为35℃,进样量为10μL.结果:原植物为多年生草本,药材常皱缩成团,被毛,主根圆锥形,根茎和根部有明显的干裂,叶卷曲而多碎落,花呈黄白色;花粉粒类圆形,可见方晶和柱晶,非腺毛众多,可见具缘纹孔、螺纹及网纹导管,亦可见木纤维.药材样品TLC图斑点清晰,分离度好.水分为7.5%~18.5%,总灰分为20.5%~26.2%,水浸出物为29.9%~46.4%.脱氢卡维丁检测进样量线性范围为0.04008~2.4048μg(r=0.9999),精密度、稳定性、重复性试验的RSD<2.0%;加样回收率为95.6%~102.5%(RSD=2.3%,n=9).结论:该研究所建标准可用于毛黄堇药材质量标准评价.