武当地区马尾松松针中总黄酮及莽草酸含量测定

2018-09-03 10:45:54柯昌虎郑芳严慧
中国中医药信息杂志 2018年6期

柯昌虎 郑芳 严慧

摘要:目的 建立武当地区马尾松松针中总黄酮及莽草酸含量测定方法。方法 采用紫外分光光度法,以芦丁为对照品,在波长500 nm处测定总黄酮的含量。采用HPLC测定莽草酸含量,色谱柱为Fortis Xi C8柱(5 ?m,250 mm×4.6 mm),流动相为乙腈-0.4%磷酸溶液(8∶92,V/V),流速为0.9 mL/min,检测波长为213 nm,柱温为30 ℃,进样量为20 ?L。结果 芦丁在8.26~49.54 ?g范围内与吸光度呈良好的线性关系(r=0.999 4),平均加样回收率为99.2%,RSD=1.94%。莽草酸在10.26~61.56 ?g范围内与峰面积呈良好的线性关系(r=0.999 4),平均加样回收率为99.5%,RSD=1.93%。马尾松松针中总黄酮含量为28.33 mg/g,莽草酸含量为15.25 mg/g。结论 本方法简便、快速、准确、重复性好,可作为武当地区马尾松松针中总黄酮及莽草酸的含量测定方法。

关键词:马尾松;松针;总黄酮;莽草酸;含量测定;紫外分光光度法;高效液相色谱法

DOI:10.3969/j.issn.1005-5304.2018.06.017

中图分类号:R284.1 文献标识码:A 文章编号:1005-5304(2018)06-0069-04

Content Determination of Total Flavonoids and Shikimic Acid in Pine Needles of

Pinus massoniana Lamb. in Wudang Area

KE Chang-hu1, ZHENG Fang1, YAN Hui1, LIU Hui-min1, FU Pei-hu1, HU Ping2, ZHU Xue-song1

1. Dongfeng Hospital Affiliated to Hubei University of Medicine, Shiyan 442000, China;

2. College of Pharmacy, Hubei University of Medicine, Shiyan 442000, China

Abstract: Objective To establish a method to determine the contents of total flavonoids and shikimic acid in pine needles of Pinus massoniana Lamb. in Wudang Area. Methods Rutin was used as reference standard, and the content of total flavonoids in pine needles of Pinus massoniana Lamb. was determined by UV spectrometry at wavelength of 500 nm. The content of shikimic acid was determined by HPLC-DAD. The Fortis Xi C8 column (5 ?m, 250 mm × 4.6 mm) was adopted with acetonitrile - 0.4% phosphoric acid solution (8:92, V/V) as mobile phase at the flow rate of 0.9 mL/min. The detection wavelength was 213 nm; the column temperature was 30 ℃; the injection volume was 20 ?L. Results The linear range was 8.26–49.54 ?g for rutin (r=0.999 4) with an average recovery of 99.2%, RSD=1.94%. The linear range was 10.26–61.56 ?g for shikimic acid (r=0.999 4) with an average recovery of 99.5%, RSD=1.93%. The contents of total flavonoids in pine needles of Pinus massoniana Lamb. was 28.33 mg/g, and shikimic acid was 15.25 mg/g, respectively. Conclusion The method is simple, rapid, accurate and reproducible. It can be used for the content determination of total flavonoids and shikimic acid in pine needles of Pinus massoniana Lamb. in Wudang Area.

Keywords: Pinus massoniana Lamb.; pine needles; total flavonoids; shikimic acid; content determination; UV spectrometry; HPLC

武當马尾松Pinus massoniana Lamb.为松科松属植物,大面积分布于武当山系海拔800 m以下亚热带落叶常绿阔叶混交林带。松针为马尾松的针状叶,是马尾松的药用代表部位[1]。松针中含有黄酮、挥发油、莽草酸等活性成分[2-4]。黄酮类化合物具有抗氧化、抗病毒、抗癌、降血脂等药理作用[5-6]。莽草酸在松针中含量丰富,具有抗血小板聚集、抗菌、镇痛、预防血栓等药理作用[3,7],同时作为药物中间体用于合成抗流感及抗癌类药物,使开发松针资源具有较高的药用价值和经济价值。本课题组前期对松针及“武当松针茶”进行研究,初步分析了多种药用成分[8-11]。本研究通过充分提取松针中主要活性成分总黄酮和莽草酸并测定其含量,为马尾松松针资源利用及开发松针类药品、食品、保健品、添加剂等提供参考。……

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