Method for simultaneously detecting nine chemical components in quisqualis indica
A kind of chemical composition, gentleman's technology, applied in the field of analysis and detection, can solve the problem of difficult to reflect the overall quality and so on
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[0072] In the present invention, the preparation method of the linear curve preferably comprises the following steps:
[0073] The reference substance series solutions of 9 kinds of chemical components were prepared respectively; the 9 kinds of chemical components were trigonelline, malic acid, gallic acid, catechin, methyl gallate, vanillic acid, syringic acid, ellagic acid and arabic acid. ferulic acid;
[0074] The reference substance series solutions of the 9 chemical components were detected by UPLC-MS / MS to obtain the chromatographic peak areas of the 9 chemical components respectively, and the chromatographic peak areas were linearly fitted with the concentrations to obtain a linear curve.
[0075] The present invention prepares respectively the reference substance series solution of 9 kinds of chemical components; said 9 kinds of chemical components are trigonelline, malic acid, gallic acid, catechin, methyl gallate, vanillic acid, syringic acid, ellagic acid and feru...
Embodiment 1
[0099] (1) Preparation of reference substance series solutions
[0100] (1.1) prepare the reference substance mother liquor of 9 kinds of chemical components
[0101] Accurately weigh 36.45mg of trigonelline, add methanol to dissolve, transfer to a 25mL volumetric flask and set the volume to the mark, shake well, and obtain a concentration of 1.458mg / mL of trigonelline reference substance mother solution;
[0102] Accurately weigh 15.95mg of malic acid, add methanol to dissolve, transfer to a 25mL volumetric flask and set the volume to the mark, and shake well to obtain the mother solution of malic acid reference substance with a concentration of 1.458mg / mL;
[0103] Accurately weigh 12.25mg of gallic acid, add methanol to dissolve, transfer to a 25mL volumetric flask and set the volume to the mark, and shake well to obtain a gallic acid mother solution with a concentration of 0.49mg / mL;
[0104] Accurately weigh 1.175mg of catechin, add methanol to dissolve, transfer to a 25...
Embodiment 2
[0150] precision test
[0151]With the mixed reference substance solution prepared in embodiment 1 step (1.2), adopt the UPLC-MS / MS detection condition of embodiment 1 step (3.1) to carry out UPLC-MS / MS detection, record the peak area of 9 kinds of reference substances, within 1 day The intra-day precision was tested 6 times in a row; the inter-day precision was tested 3 times a day for 3 consecutive days. According to the linear regression equation in Table 4, the concentrations of the nine chemical components in the mixed reference solution were calculated, and the intra-day precision and inter-day precision were calculated through the peak concentrations of each chemical component. The results are shown in Table 5.
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