A reserved-phase HPLC method was developed for the determination of barbaloin in Aloe vera L. var. chinensis (Haw.) Berger and Aloe barbadensis Miller, and whether there was a close relationship between the contents of barbaloin and their environments in which they were growing was decided. A Hypersil ODS column (4.6 mm×200 mm, 5 μm)was used with a mobile phase of methanol-water (40:60, containing 0.1% acetic acid), the flow rate being 1.0 mL·min -1, detection wavelength at 359 nm, and the column temperature being 30℃. The linear range of barbaloin was between 0.0726 and 0.726 μg with a correlation coefficient of 0.9998 and the regression equation being Y=1.9202×10 6X-1801.9. Barbaloin was stable in methanol in 48 h and the instrument precision was 1.2% while the method precision was 4.9%. The contents of barbaloin of 12 samples ranged from 6.160 to 319.1 μg·g -1. The method developed was fast and simple with good reproducibility. There was high correlation between the contents of barbaloin and their growing environments.
目的:检测细辛药材不同用药部位。肾毒性成分马兜铃酸 A 的含量。方法:高效液相色谱方法,采用 Agilent Zorbax SB-C_(18)色谱柱(4.6 mm×250 mm,5μm),以乙腈-1%冰醋酸水溶液(39:61)为流动相,流速为0.8 mL·min^(-1),检测波长为317 nm,分别测定细辛全草和根、芦头、叶柄、叶片、花5个部分马兜铃酸 A 的含量。结果:高效液相色谱方法的回收率为98.7%,马兜铃酸 A 进样量在5.2～68ng 范围内线性关系良好;细辛全草含马兜铃酸 A 16.2μg·g^(-1),根和芦头中含微量马兜铃酸 A,叶柄和叶片中有较多马兜铃酸 A,花中含量最高。结论:细辛地上部分和地下部分马兜铃酸 A 含量差别很大。
