高效液相色谱法同时测定三七中5种核苷和碱基的含量（英文）

目的测定三七不同部位中5种核苷类成分胞苷、尿苷、鸟苷、腺苷和尿嘧啶含量。方法采用Zorbax SB-Aq色谱柱;以8mmol·L-1醋酸铵水溶液（A）和甲醇（B）为流动相梯度洗脱,在25℃条件下流速为1mL·min-1;检测波长为260nm。结果胞苷、尿苷、鸟苷、腺苷和尿嘧啶线性范围分别为1.79-57.40μgm·L^-1（r^2=1.0000）,3.30-105.60μgm·L^-1（r^2=1.0000）,3.09-98.80μgm·L^-1（r^2=0.9999）,2.77-88.60μgm·L^-1（r^2=1.0000）和0.38-12.30μgm·L^-1（r^2=1.0000）;加样回收率分别为93.9%,96.5%,92.7%,93.2%和98.8%。三七不同部位中5种核苷类成分的含量差异显著。结论本文首次报道了三七中核苷类成分的含量,其对完善三七药材的质量控制具有一定的指导意义。

Simultaneous determination of five nucleosides and nucleobases in Panax notoginseng using high-performance liquid chromatography

Aim To quantitatively determine five nucleosides and nucleobases, including cytidine, uridine, guanosine, adenosine and uracil in different parts of Panax notoginseng. Methods Separation was performed on a Zorbax SB-Aq column using a gradient elution with mobile phase of 8 mmol^L-1 ammonium acetate aqueous solution （A） and methanol （B）. The assay was carried out at a flow rate of 1 mL·min^-1 at 25 ℃ with the diode-array detection at 260 nm. Results Cytidine, uridine, guanosine, adenosine and uracil had good linearity in the ranges of 1.79 - 57.40 μg·mL^-1 （r^2 = 1.0000）, 3.30 - 105.60 μg·mL^-1 （r^2 = 1.0000）, 3.09 - 98.80 μg·mL^ -1（r^2 = 0.9999）, 2.77 - 88.60 μg·mL^-1 （r^2 = 1.0000） and 0.38 - 12.30 μg·mL ^-1 （r^2 = 1.0000） with average recoveries of 93.9%, 96.5%, 92.7%, 93.2% and 98.8%, respectively. The content of cytidine, uridine, guanosine, adenosine and uracil in different parts of P. notogingeng were significantly different. Conclusion This is the first report on quantitative determination of nucleosides and nucleobases in P notoginseng.