高效毛细管电泳法同时测定红花中腺苷、芦丁和槲皮素的含量

目的 用高效毛细管电泳法对红花中的有效成分腺苷、槲皮素和芦丁同时进行含量测定。方法 采用熔融石英毛细管柱（66.5 cm×50 μm ID，有效长度58 cm）作为分离通道；以50 mmol·L^-1硼砂其中含18%甲醇的溶液（pH 9.7）为运行缓冲液；运行电压: 24 kV；毛细管柱温: 20 ℃；检测波长： 210 nm。结果 以利福平为内标，腺苷、芦丁和槲皮素分别在10～160 mg·L^-1，100～2 000 mg·L^-1和100～1 600 mg·L^-1 线性关系良好（R>0.998）；平均回收率分别为98.5%～100.5%， 96.9%～99.5%和99.1%～99.5%； RSD分别为6.5%，5.2%和5.6%(N=5)。结论 此法操作简便快速，回收率及重现性好，可作为红花质量控制的方法。

Determination of adenosine, rutin and quercetin in Carthamus tinctorius by HPCE

AIM: To develop a method for determination of adenosine, rutin and quercetin in Carthamus tinctorius L. by high performance capillary electrophoresis(HPCE). METHODS: A fused silica capillary (66.5 cm x 50 microns ID, an effective length of 58 cm) was used. The running buffer composed of 50 mmol.L-1 borax (pH 9.7) containing 18% methanol. The applied voltage was 24 kV and the capillary temperature was 20 degrees C. The detection wavelength was 210 nm. Rifampicin was used as internal standard. RESULTS: A good linearity between peak area ratio of the common peak to the internal standard and the concentration was found in the range of 10-160 mg.L-1 for adenosine, 100-2,000 mg.L-1 for rutin and 100-1,600 mg.L-1 for quercetin (r > 0.998). The average recoveries were 98.5%-100.5%, 96.9%-99.5% and 99.1%-99.5% for adenosine, rutin and quercetin, respectively. The relative standard deviation was less than 6.5% (n = 5). CONCLUSION: The method is simple, rapid and with satisfactory recoveries and good reproducibilities. It can be used to control the quality of Carthamus tinctorius.