HPLC测定不同产地粉萆薢中原薯蓣皂苷和薯蓣皂苷含量
2016-05-07邵岩岩肖潇吴玲芳朱丹杨光辉张晓雪张兰珍
邵岩岩 肖潇 吴玲芳 朱丹 杨光辉 张晓雪 张兰珍

摘要:目的 采用高效液相色谱法(HPLC)测定不同产地粉萆薢中原薯蓣皂苷和薯蓣皂苷含量。方法 采用Agilent C18色谱柱(4.6 mm×150 mm,5 μm),以乙腈-水为流动相梯度洗脱,流速0.8 mL/min,检测波长208 nm,柱温30 ℃,进样量20 μL。结果 原薯蓣皂苷在1.73~8.64 μg(r=0.999 1)范围内线性关系良好,平均回收率为101.98%(RSD=1.53%);薯蓣皂苷在1.03~8.20 μg(r=0.999 6)范围内线性关系良好,平均回收率为101.60%(RSD=2.41%)。10个不同产地粉萆薢中原薯蓣皂苷含量在0.89%~2.24%之间,薯蓣皂苷含量在0.75%~3.22%之间。结论 该方法操作简便,定量准确,重复性好,可作为粉萆薢药材质量控制方法。
关键词:粉萆薢;中药产地;原薯蓣皂苷;薯蓣皂苷;高效液相色谱法
中图分类号:R284.1 文献标识码:A 文章编号:1005-5304(2016)05-0104-03
Content Determination of Protodioscin and Diosgenin in Dioscoreae Hypoglaucae Rhizoma from Different Habitats by HPLC SHAO Yan-yan, XIAO Xiao, WU Ling-fang, ZHU Dan, YANG Guang-hui, ZHANG Xiao-xue, ZHANG Lan-zhen (Beijing University of Chinese Medicine, Beijing 100102, China)
Abstract: Objective To establish an HPLC method for the content determination of protodioscin and diosgenin in Dioscoreae Hypoglaucae Rhizoma from different habitats. Methods The chromatographic separation was performed on an Agilent C18 column (4.6 mm×150 mm, 5 μm) with mobile phase of acetonitrile-water solution with gradient elution at the flow rate of 0.8 mL/min; the detection wavelength was 208 nm; the column temperature was 30 ℃; the injection volume was 20 μL. Results Protodioscin showed a good linear relationship among the range of 1.73–8.64 ?g (r=0.999 6), with the average recovery of 101.98% (RSD=1.53%); Diosgenin showed a good linear relationship among the range of 1.03–8.20 μg (r=0.999 1), with the average recovery of 101.60% (RSD=2.41%). The contents of protodioscin and diosgenin in Dioscoreae Hypoglaucae Rhizoma from 10 different habitats were in the range of 0.89%–2.24% and 0.75%–3.22%, respectively. Conclusion The method is simple, accurate and with repeatability, which can be used as quality control method of Dioscoreae Hypoglaucae Rhizoma.
Key words: Dioscoreae Hypoglaucae Rhizoma; place of production (TCD); protodioscin; diosgenin; HPLC
粉萆薢为薯蓣科植物粉背薯蓣Dioscorea hypoglauca Palibin的干燥根茎,具有利湿祛浊、祛风通痹功效,用于淋病白浊、白带过多,湿热疮毒、腰膝疼痛及风湿顽痹和小便不利等病症[1]。粉萆薢主要分布于浙江临安、淳安、龙泉,湖南沪溪、沅陵、安化及四川、安徽、江西等地。现代药理研究表明,粉萆薢具有降压、抗炎、抗菌、提高免疫、抗肿瘤、杀软体动物等功效[2]。粉萆薢主要含有皂苷、甾体、二芳基庚烷、木脂素、有机酸及脂类等化学成分,其中甾体皂苷类化合物是其主要药效成分。薯蓣皂苷有抗肿瘤、改善心血管、调节免疫、抗血小板聚集、抗炎、
降血糖、预防和治疗骨质疏松作用,原薯蓣皂苷有较好的抗肿瘤作用[4-9],为粉萆薢的主要药效物质。
2015年版《中华人民共和国药典》尚无粉萆薢的含量测定方法,目前文献报道的粉萆薢含量测定有药材中总皂苷的含量测定[3]和薯蓣皂苷、薯蓣皂苷元的含量测定[10-11]。……
