Method for determination of organic acids and flavone components in polygonum viviparum
A determination method and technology of Polygonum vulgaris, which are applied in the directions of measuring device, material separation, analysis of materials, etc., can solve the problems of not fully reflecting the quality of medicinal materials, unfavorable quality of Polygonum vulgaris, etc., and achieve increased ionization effect, good degree of separation, and simple steps. Effect
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Embodiment 1
[0046] 1. Reagents, medicinal materials, standards and instruments
[0047] 1.1 Reagents and medicinal materials
[0048]
[0049] 1.2 Standards
[0050]
[0051] 1.3 Instruments
[0052]
[0053] 2. Preparation of the test solution
[0054] Accurately weigh 1.0g of Polygonum versicolor powder passed through a No. 3 sieve, place it in a stoppered Erlenmeyer flask, accurately measure 30mL of 50% methanol, weigh it, place it in an ultrasonic instrument at 55°C for 15 minutes, let it cool, and weigh it , Use methanol to make up the lost weight, shake well, filter, and then filter through a 0.22μm filter membrane, and take the continued filtrate, that is.
[0055] 3. Liquid chromatography and mass spectrometry conditions of LC-MS / MS
[0056] 3.1 Liquid chromatography conditions for LC-MS / MS
[0057] Agilent ZORBAX SB-Aq chromatographic column (150mm×4.6mm, 5μm), mobile phase 0.1% aqueous formic acid (A)-acetonitrile (B), gradient elution according to Table 1, flow rate...
Embodiment 2
[0068] Example 2 Quantitative analysis of gallic acid and chlorogenic acid
[0069] On the basis of Example 1, gallic acid and chlorogenic acid can also be quantitatively analyzed.
[0070] 1. Preparation of reference solution:
[0071] Mixed reference substance: take an appropriate amount of gallic acid and chlorogenic acid reference substance, weigh them accurately, add 50% methanol solution to make a mixed reference substance solution containing 0.086mg of gallic acid and 0.173mg of chlorogenic acid per 1mL, and obtain it;
[0072] Gallic acid reference substance solution: take an appropriate amount of gallic acid, accurately weighed, add 50% methanol solution to make a reference substance solution containing 0.0216mg of gallic acid per 1mL;
[0073] Chlorogenic acid reference substance solution: remove an appropriate amount of chlorogenic acid, accurately weigh it, add 50% methanol solution to make a reference substance solution containing 0.945 mg of chlorogenic acid per...
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