HPLC wavelength switching method for simultaneously determining gallic acid content and ziyuglycoside I content in sanguisorba officinalis l or sanguisorba officinalis l preparation
A technology of gallic acid and burnet saponin, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of not being able to fully control burnet white tablets, and achieve the effect of quality control guarantee and comprehensive active ingredient content
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Embodiment 1
[0060] Embodiment 1 HPLC wavelength switching method and methodology verification of the present invention
[0061] 1 Instruments, reagents and medicines
[0062] SSI series 1500 high performance liquid chromatograph (USA SSI company), ultraviolet detector, CSChrom Plus chromatographic workstation; chromatographic column Inertsil ODS-3 (250mm×4.6mm, 5μm, GL Sciences lnc.); KQ-600DE type numerical control ultrasonic cleaning Device (40KHz, 600W); 1 / 100,000 electronic balance (Ohaus, Switzerland DV-215-CD); Youpu UPT series ultrapure water device (Chengdu Youpu Electronic Products Co., Ltd.), adjustable pipette ( American Thermo, Finnpipette series, 20-200 μL, 100-1000 μL).
[0063] Burnet (see Table 1 for the batch number, purchased in Qingshui County, Tianshui City, Gansu Province); Burnet Burnet (see Table 2 for the batch number, provided by Chengdu Di’ao Pharmaceutical Group Co., Ltd.); gallic acid reference substance (lot number: M-017 -150129, purchased from Chengdu Ruif...
Embodiment 2
[0099] The screening of embodiment 2 chromatographic conditions of the present invention
[0100] 1. Selection of target compound wavelength
[0101] Precisely draw the mixed reference solution and inject it into the high performance liquid chromatograph, and use the secondary array tube detector to scan the full wavelength within 200-400nm. I has an absorption maximum at 210nm (see image 3 , Figure 4 ), while gallic acid has maximum absorption near 210nm and 280nm (see figure 2 , Figure 4), but it is not conducive to the separation of impurity peaks and the calculation of content at 210nm. Therefore, this study adopts the switching wavelength method to detect and analyze the test samples, firstly select 280nm to avoid impurity peaks, and then switch to 210nm to detect Burnet elm saponins. For the 3D spectrum of Burnet reference substance, see Figure 5 .
[0102] 2. Selection of mobile phase ratio
[0103] The selected mobile phase system is acetonitrile-0.05% pho...
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