Method for distinguishing authenticity of selaginella tamariscina varieties in non-targeted metabonomics and application
A metabolomics, non-targeted technology, applied in the field of Selaginella identification, can solve the problems of inaccurate quantitative results, inability to effectively extract Selaginella-specific markers, and cumbersome extraction methods.
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[0041] The preparation procedure of the samples of the present invention investigated different extraction solvents (50% methanol, 70% methanol and 100% methanol), different extraction methods (ultrasonic and reflux extraction) and extraction time (30 minutes, 45 minutes, 60 minutes and 75 minutes) .
[0042] like Image 6 As shown, 70% methanol solution can extract Selaginellin and Selaginellin A specific markers, but 50% methanol and 100% methanol cannot extract Selaginella specific markers.
[0043] like Figure 7 As shown, Selaginellin and Selaginellin A can be extracted with reflux extraction time of 60 minutes, but the amount of Selaginellin and Selaginellin A extracted by ultrasonic extraction for 60 minutes is very small, and no obvious peak can be seen from the figure.
[0044] like Figure 8 As shown, when the reflux extraction time was 50-75 min, the content of specific markers of Selaginella serrata extracted was higher.
[0045] Therefore, it was finally deter...
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[0047] The present invention will be further described below with reference to the accompanying drawings.
[0048] 1. Preparation of Selaginella and Selaginella contamination samples:
[0049] Pulverize Selaginella and Selaginella mixed product, add 30 mL of 70% methanol solution per 0.27-0.33 g of sample powder, seal it, weigh it, extract under reflux, cool, make up the weight with methanol, filter, and take the subsequent filtrate, 18000 g × Centrifuge at 4 degrees and get the supernatant.
[0050] 2. LC-MS detection of Selaginella and Selaginella contamination sample components:
[0051] Chromatographic conditions: chromatographic column ACQUITY UPLC RBEH C18 column (100mm×2.1mm, 1.7μm); mobile phase is 0.1% formic acid aqueous solution-acetonitrile, gradient elution program is 0~10min, 5~15% acetonitrile; 10~20min, 15%~35% acetonitrile; 20~30min, 35%~55% acetonitrile; 30~40min, 55%~85% acetonitrile; 40~45min, 85%~95% acetonitrile; 45~50min, 95%~95% % acetonitrile; flow ...
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