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目的测定板栗壳中没食子酸及绿原酸的含量,为控制板栗壳药材质量提供依据。采用薄层色谱法(TLC)对云南不同地区板栗壳中的没食子酸和绿原酸进行鉴别,建立同时测定板栗壳中没食子酸、绿原酸含量的HPLC方法。方法Hypersil ODS2色谱柱(250 mm×4.6 mm,5μm),检测波长295 nm,流动相为0.4%磷酸(A)和甲醇(B),梯度洗脱(0~15 min,90%A,15~20min,90%~70%A),流速1 mL·min~(-1),柱温30℃,进样体积10μl。结果 15个不同产地板栗壳药材TLC中均能检出没食子酸和绿原酸;没食子酸在0.60~7.20μg·ml~(-1)范围线性关系良好,保留时间约为6.0 min,r=0.9996,绿原酸在0.30~6.00μg·ml~(-1)范围线性关系良好,保留时间约为16.0 min,r=0.9995;没食子酸和绿原酸平均加样回收率分别为92.4%、88.1%,RSD%分别为6.20%、6.33%。结论该方法操作简单,结果准确,专属性强,为板栗壳药材的质量评价提供参考。
Objective To determine the content of gallic acid and chlorogenic acid in chestnut shell and provide basis for controlling the quality of chestnut shell medicinal material. The contents of gallic acid and chlorogenic acid in chestnut shells of different regions of Yunnan were identified by TLC, and the contents of gallic acid and chlorogenic acid in chestnut shells were determined by HPLC. Methods The Hypersil ODS2 column (250 mm × 4.6 mm, 5 μm) was used. The detection wavelength was 295 nm and the mobile phase consisted of 0.4% phosphoric acid (A) and methanol (B) 20 min, 90% ~ 70% A), flow rate 1 mL · min ~ (-1), column temperature 30 ℃, injection volume 10μl. Results Gallic acid and chlorogenic acid were detected by TLC in 15 Chinese chestnut shells. The linearity of gallic acid in the range of 0.60 ~ 7.20μg · ml ~ (-1) was good with a retention time of 6.0 min and r = 0.9996 , The linear range of chlorogenic acid in the range of 0.30 ~ 6.00μg · ml ~ (-1) was good, the retention time was about 16.0 min, r = 0.9995; the average recoveries of gallic acid and chlorogenic acid were 92.4%, 88.1% , RSD% were 6.20% and 6.33% respectively. Conclusion The method is simple, accurate and specific. It provides a reference for the quality evaluation of Chinese chestnut shell medicinal materials.