摘要:
采用高效液相色谱(HPLC)的方法,以Agilent Zorbax Eclipse XDB-C18(4.6 mm×250mm,5μm)为色谱分离柱,流动相为47%甲醇/水等度洗脱,洗脱流速为1.0 mL·min-1,柱温30℃,检测波长为270,280,290,300 nm多波长检测的色谱条件同时测定红花中4种亚精胺成分N1,N5,N10-(Z)-tri-p-coumaroylspermidine(1),N1,N5-(Z)-N10-(E)-tri-p-coumaroyl-spermidine (2),N1(E)-N5-(Z)-N10-(E)-tri-p-coumaroylspermidine (3),和N1,N5,N10-(E)-tri-p-coumaroyl-spermidine (4)的含量,进样体积为10 μL.各成分之间分离度良好,4种亚精胺成分的质量浓度分别在0.002 1~0.041 6(r=0.999 5),0.0026~0.051 2(r=0.999 7),0.002 7~0.054 0(r=0.999 8),0.005 0~0.100 4(r=0.999 8)g·L-1内与峰面积呈良好的线性关系,加样回收率为98.61%~100.9%,RSD为2.3%~3.0%.表明所建立的方法快速简便、具有较好的重复性和稳定性,可用于红花中4种亚精胺成分的含量测定.