龙源期刊网 http://www.qikan.com.cn
不同煎煮时间内生草乌中乌头碱含量变化研究
作者:刘学湘 严维维
来源:《中国中医药信息》2013年第09期
摘要:目的 考察生草乌在不同煎煮时间内毒性成分乌头碱的含量变化。方法 采用反相高效液相色谱法测定乌头碱的含量,以甲醇-水-氯仿-二乙胺(70∶30∶3∶0.2)为流动相,流速1.0 mL/min,柱温30 ℃,紫外检测波长为240 nm。结果 乌头碱在0.08~0.8 µg 范围内呈良好的线性关系,r=0.999 8(n=6),平均回收率为97.16%。生草乌在煎煮过程中乌头碱的含量0~2 h内逐渐升高,2 h以后逐渐降低,2~4 h降低幅度尤为明显。结论 高效液相色谱法测定乌头碱的含量快速、简便、准确、重复性好、结果可靠。生草乌煎煮4 h能有效减低乌头碱的含量。
关键词:草乌;乌头碱;煎煮时间;高效液相色谱法
DOI:10.3969/j.issn.1005-5304.2013.09.016
中图分类号:R284.1 文献标识码:A 文章编号:1005-5304(2013)09-0047-02
Content Change of Aconitine in Radix Aconiti Kusnezoffii with Different Boiling Time LIU Xue-xiang , YAN Wei-wei (Nanjing University of Chinese Medicine, Nanjing 210029, China )
Abstract:Objective To investigate the content change of aconitine in Radix Aconiti Kusnezoffii in different boiling time. Methods The chromatographic procedure was carried out with methanol-water- chloroform-diethylamide (70∶30∶3∶0.2) as mobile phase at a flow rate of 1.0 mL/min, the column temperature at 30 ℃, and UV detector at 240 nm. Results There was a good linear relationship of aconitine within 0.08-0.8 µg , r=0.999 8 (n=6), and the average recovery rate was 97.16%. The content of aconitine increased gradually in 0-2 h, then gradually decreased. And the reduction was evident particularly during 2-4 hours. Conclusion HPLC method is rapid,
simple , accurate, reproducible and reliable for determining aconitine. The content of aconitine can be decreased effectively by boiling 4 hours.
Key words:Radix Aconiti Kusnezoffii;aconitine ;decocting time;HPLC
草乌为毛莨科植物北乌头Aconitum kusnezoffii Reichb.的干燥块根,性味辛、苦,热,有大毒,归心、肝、肾、脾经,功能祛风除湿、温经止痛,用于风寒湿痹、关节疼痛、心腹冷痛、寒疝作痛[1],为常用的乌头类中药。现代研究表明,乌头类中药具有抗炎、镇痛、强心、降血糖、抗肿瘤、抗癫痫、提高免疫功能等作用。主要成分为乌头碱型生物碱,如乌头碱
龙源期刊网 http://www.qikan.com.cn
不同煎煮时间内生草乌中乌头碱含量变化研究
作者:刘学湘 严维维
来源:《中国中医药信息》2013年第09期
摘要:目的 考察生草乌在不同煎煮时间内毒性成分乌头碱的含量变化。方法 采用反相高效液相色谱法测定乌头碱的含量,以甲醇-水-氯仿-二乙胺(70∶30∶3∶0.2)为流动相,流速1.0 mL/min,柱温30 ℃,紫外检测波长为240 nm。结果 乌头碱在0.08~0.8 µg 范围内呈良好的线性关系,r=0.999 8(n=6),平均回收率为97.16%。生草乌在煎煮过程中乌头碱的含量0~2 h内逐渐升高,2 h以后逐渐降低,2~4 h降低幅度尤为明显。结论 高效液相色谱法测定乌头碱的含量快速、简便、准确、重复性好、结果可靠。生草乌煎煮4 h能有效减低乌头碱的含量。
关键词:草乌;乌头碱;煎煮时间;高效液相色谱法
DOI:10.3969/j.issn.1005-5304.2013.09.016
中图分类号:R284.1 文献标识码:A 文章编号:1005-5304(2013)09-0047-02
Content Change of Aconitine in Radix Aconiti Kusnezoffii with Different Boiling Time LIU Xue-xiang , YAN Wei-wei (Nanjing University of Chinese Medicine, Nanjing 210029, China )
Abstract:Objective To investigate the content change of aconitine in Radix Aconiti Kusnezoffii in different boiling time. Methods The chromatographic procedure was carried out with methanol-water- chloroform-diethylamide (70∶30∶3∶0.2) as mobile phase at a flow rate of 1.0 mL/min, the column temperature at 30 ℃, and UV detector at 240 nm. Results There was a good linear relationship of aconitine within 0.08-0.8 µg , r=0.999 8 (n=6), and the average recovery rate was 97.16%. The content of aconitine increased gradually in 0-2 h, then gradually decreased. And the reduction was evident particularly during 2-4 hours. Conclusion HPLC method is rapid,
simple , accurate, reproducible and reliable for determining aconitine. The content of aconitine can be decreased effectively by boiling 4 hours.
Key words:Radix Aconiti Kusnezoffii;aconitine ;decocting time;HPLC
草乌为毛莨科植物北乌头Aconitum kusnezoffii Reichb.的干燥块根,性味辛、苦,热,有大毒,归心、肝、肾、脾经,功能祛风除湿、温经止痛,用于风寒湿痹、关节疼痛、心腹冷痛、寒疝作痛[1],为常用的乌头类中药。现代研究表明,乌头类中药具有抗炎、镇痛、强心、降血糖、抗肿瘤、抗癫痫、提高免疫功能等作用。主要成分为乌头碱型生物碱,如乌头碱