RP—HPLC检测不同pH条件下毛诃子中单宁酸等4种多酚化合物含量变化
2017-11-06马定乾陈平华杰左晓霜范源
马定乾+陈平+华杰+左晓霜+范源



摘要:目的 应用RP-HPLC法分析在不同的 pH 溶液中,毛诃子中Tannins、GA、β-PGG及Corilagin的含量變化。方法 将毛诃子粉末分别采取回流提取方法的产物加入 pH 为2-7缓冲液,用反相高效液相色谱测定单宁酸、没食子酸、β-PGG 及柯里拉京的含量并分析。结果 毛诃子中单宁酸含量随pH增大而增加;没食子酸含量随pH增大而变化不明显;β-PGG含量随pH增大而减小;柯里拉京含量随pH增大而减小。结论 通过研究不同pH条件下毛诃子中的Tannins、GA、β-PGG 及Corilagin的含量变化,可为毛诃子中相关成分的质控提供一定理论参考。
关键词:毛诃子;单宁酸;没食子酸;β-PGG;柯里拉京;RP-HPLC
中图分类号:R9272 文献标志码:A 文章编号:1007-2349(2017)10-0072-04
Determination of Content Changes of Four Tannin Polyphenolic Compounds in Fructus
Terminaliae Billericae by RP-HPLC under Different pH Conditions
MA Ding-gan, CHEN Ping, HUA Jie, ZUO Xiao-shuang, FAN Yuan
(Yunnan University of Traditional Chinese Medicine, Kunming 650500, China)
【Abstract】Objective: To analyze the contents of tannins, agllic acid, β-PGG and corilagin in Fructus Terminaliae Billericae in different pH solutions by using RP-HPLC Methods: The products extracted from Terminaliae Billericae powder by reflux extraction were joined with 2 to 7 pH buffer solution and the contents of tannic acid, gallic acid, β-PGG and corilagin were determined and analyzed by RP-HPLC Results:The content of tannic acid increased with the increase of pH The content of gallic acid changed unapparently with the increase of pH The content of β-PGG decreased with the increase of pH The content of corilagin decreased with the increase of pH Conclusion: By studying the content changes of tannins, GA, β-PGG and corilagin in Fructus Terminaliae Billericae under different pH conditions, we can provide some theoretical reference for the quality control of related components in Fructus Terminaliae Billericae
【Key words】Fructus Terminaliae Billericae, tannic acid, agllic acid, β-PGG, corilagin, RP-HPLC
毛诃子(terminaliae belliricae fructus)系藏族习用药材,主产于云南、西藏地区。为使君子科植物毗黎勒Terminalia bellirica(Gaertn)Roxb的干燥成熟果实[1]。始载于《唐本草》,具有发表透疹,清热解毒,升举阳气等功效。现代药理学研究表明,毛诃子具有抗氧化性、治疗CCl4引起的肝损伤、降低胆固醇作用、抗菌作用及降低由四氧嘧啶引起的糖尿病大鼠的血糖等作用。毛诃子所含化学成分有鞣质类、三萜类、强心苷类、木质素类及多糖类等。单宁酸类物质为毛诃子主要抗氧化、抗肿瘤、抗菌等药理作用的主要活性成分之一[2,4-8]。
Bharathi等[3]研究发现,毛诃子中的单宁类物质为单宁酸(Tannins)、没食子酸(Gallic acid,GA)、鞣花酸(Ellagic acid)、没食子酸甲酯(Methyl gallate)、柯里拉京(Corilagin)以及1,2,4,6-五酰基葡萄糖(1,2,3,4,6-penta-O-galloylβ-D-glucos,β-PGG)。
毛诃子作为滇藏地区常用药材,有很高的药用价值,目前对于毛诃子中以上几种物质的含量随pH变化的研究的报道较少。本实验欲通过对不同pH条件下毛诃子中单宁酸、没食子酸、β-PGG及柯里拉京含量进行测定,为云南地区毛诃子资源开发、质量标准设定及工业运用提供一定的理论参考。……
