Xiong Wei, Chen Xianqiang, Lv Guangping, Hu Dejun, Zhao Jing, Li Shaoping
State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China.
J Pharm Anal. 2016 Dec;6(6):382-388. doi: 10.1016/j.jpha.2016.05.007. Epub 2016 May 27.
In this work, a fast and efficient microwave-assisted extraction (MAE) method was developed to extract main bioactive alkaloids from lotus plumue. To optimize MAE conditions, three main factors were selected using univariate approach experiments, and then central composite design (CCD). The optimal extraction conditions were as follows: methanol concentration of 65%, microwave power of 200 W, and extraction time of 260 s. An high performance liquid chromatography-diode array detector (HPLC-DAD) method was established to quantitatively analyze these phytochemicals in different lotus plumule samples and in different part of lotus. Chromatographic separation was carried out on an Agilent Zorbax Extend-C column (4.6 mm×150 mm, 3.5 µm). Gradient elution was applied with the mobile phase constituted with 0.1% triethylamine in water (A) and acetonitrile (B): 40%-70% B at 0-8 min, 70%-100% B at 8-9 min, 100% B for 2 min, and then equilibrated with 40% B for 2 min.
在本研究中,开发了一种快速高效的微波辅助萃取(MAE)方法,用于从莲房中提取主要生物活性生物碱。为了优化MAE条件,首先采用单因素实验筛选出三个主要因素,然后采用中心复合设计(CCD)。最佳萃取条件如下:甲醇浓度65%、微波功率200W、萃取时间260s。建立了高效液相色谱-二极管阵列检测器(HPLC-DAD)方法,用于定量分析不同莲房样品及莲不同部位中的这些植物化学物质。色谱分离在安捷伦Zorbax Extend-C柱(4.6mm×150mm,3.5μm)上进行。流动相由0.1%三乙胺水溶液(A)和乙腈(B)组成,采用梯度洗脱:0-8min,40%-70%B;8-9min,70%-100%B;100%B保持2min,然后用40%B平衡2min。