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SPE—HPLC测定乐舒洗液中黄柏碱含量

2017-09-07杨妮毛桂福王宏虹谢巍林威

中国中医药信息杂志 2017年9期
关键词:固相萃取

杨妮 毛桂福 王宏虹 谢巍 林威

摘要:目的 建立乐舒洗液中黄柏的薄层鉴别,以及用固相萃取-高效液相色谱法(SPE-HPLC)测定黄柏碱含量的方法。方法 采用薄层色谱法对乐舒洗液中的黄柏进行定性鉴别。采用Bond Elut plexa PCX强阳离子交换固相萃取小柱净化,Platisil-NH2柱为色谱柱,柱温为30 ℃,流动相为0.3%三乙胺(磷酸调pH 3.82)-四氢呋喃-乙腈(18∶12∶70),等度洗脱,流速为1.0 mL/min,检测波长为286 nm,测定乐舒洗液中黄柏碱的含量。结果 薄层色谱法能明显检出黄柏的特征有效成分黄柏碱;黄柏碱在1.22~12.2 ?g(r=0.999 9)范围内与峰面积线性关系良好,平均加样回收率为101.18%,RSD=1.71%。结论 本方法操作简单,准确性、重复性好,可用于乐舒洗液的质量控制。

关键词:固相萃取;高效液相色谱法;乐舒洗液;黄柏碱

DOI:10.3969/j.issn.1005-5304.2017.09.

中图分类号:R284.1 文献标识码:A 文章编号:1005-5304(2017)09-

Content Determination of Phellodendrine in Leshu Lotionby SPE-HPLC YANG Ni, MAO Gui-fu, WANG Hong-hong, XIE Wei, LIN Wei (Women and Childrens Health Care Hospital of Liuzhou City, Liuzhou 545001, China)

Abstract: Objective To establish the method of thin layer identification of Phellodendri Chinensis Cortex and solid phase extraction - high performance liquid chromatography (SPE-HPLC) determination of the content of phellodendrine in Leshu Lotion. Methods Thin layer chromatography (TLC) was used for qualitative identification of Phellodendri Chinensis Cortex in Leshu Lotion and the Bond Elutplexa PCX strong cation-exchange solid phase was used for extraction small column purification. Platisil-NH2 column was as chromatographic column; column temperature was 30 ℃; triethylamine pH 3.82 (phosphoric acid), tetrahydrofuran, acetonitrile was 18:12:70, isocratic elution; flow rate was 1.0 mL/min; detection wavelength was 286 nm. Results TLC could obviously identify active ingredients of phellodendrine in Phellodendri Chinensis Cortex. The phellodendrine had good linear relationship between concentration and peak area within the scope of 1.22–12.2 ?g (r=0.999 9); the average recovery rate of phellodendrine was 101.18%, RSD was 1.71%. Conclusion This method is simple to operate, with accuracy and repeatability, and can be used for quality control of Leshu Lotion.

Key words: solid phase extraction; HPLC; Leshu Lotion; phellodendrine

樂舒洗液是柳州市妇幼保健院的传统制剂,其生产工艺较为稳定,处方由百部、黄柏、苦参、白鲜皮、蛇床子等9味药组成,具有抗菌、消炎、止痒、收敛、杀灭阴道滴虫、除臭等作用。一般采用HPLC测定黄柏碱的含量[1],但乐舒洗液中含明矾较多,色谱分析过程中明矾易析出而损害色谱柱。固相萃取是利用固体吸附剂将液体样品中的目标化合物吸附,再利用洗脱液洗脱或加热解吸附,达到分离待测化合物的目的,该方法简便,能在短时间内处理大量样品,且能

基金项目:柳州市应用技术研究与开发计划(2011J0302035)

通讯作者:毛桂福,E-mail:maogf2005@sina.com

有效去除样品中杂质的干扰,是目前公认的用于液体样品浓缩、富集最为有效的前处理技术之一[2]。……

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