Method for determining blushred rabdosis A and rosmarinic acid contents in blushred rabdosis and its preparation
A technology of oridonin and rosmarinic acid, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problem that there is no accurate method for determining oridonin and rosmarinic acid
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Embodiment 1
[0041] A. Preparation of experimental conditions:
[0042] A, prepare mobile phase: concentration is that analytical pure methanol and weight concentration are 0.5% phosphoric acid aqueous solution to be mixed with mobile phase 100ml with the ratio of 1: 0.5;
[0043] b. Chromatographic column requirements: the chromatographic column is a CLC-ODS column, the column height×diameter is 100mm×2mm, the pore diameter of the capillary column is 2μm, and the column temperature is 20°C;
[0044] c. Detection wavelength: 340mm;
[0045] d. Flow rate: 0.5ml / min;
[0046] B. Preparation of reference substance solution:
[0047] Precisely weigh analytically pure oridonin and rosmarinic acid reference substances, respectively add analytically pure methanol to make a solution containing 1 mg of oridonin or rosmarinic acid per 1 ml of solution;
[0048] C, preparation of the test solution:
[0049] Accurately weigh 1g of the powder of Rubescens to be tested, extract twice with a KQ-700E ...
Embodiment 2
[0053] A. Preparation of experimental conditions:
[0054] A, prepare mobile phase: concentration is that analytical pure methanol and weight concentration are 0.5% phosphoric acid aqueous solution to be mixed with mobile phase 100ml with the ratio of 1: 2;
[0055] b. Chromatographic column requirements: the chromatographic column is a CLC-ODS column, the column height × diameter is 200mm × 10mm, the pore diameter of the capillary column is 10μm, and the column temperature is 35°C;
[0056] c. Detection wavelength: 350mm;
[0057] d. Flow rate: 1ml / min;
[0058] B. Preparation of reference substance solution:
[0059] Precisely weigh analytically pure oridonin and rosmarinic acid reference substances, respectively add analytically pure methanol to make a solution containing 1 mg of oridonin or rosmarinic acid per 1 ml of solution;
[0060] C, preparation of the test solution:
[0061] Accurately weigh 1g of the powder of the Cordyceps japonicus tablets to be tested, extra...
Embodiment 3
[0065] A. Preparation of experimental conditions:
[0066] A, prepare mobile phase: concentration is that analytical pure methanol and weight concentration are 0.5% phosphoric acid aqueous solution to be mixed with mobile phase 100ml with the ratio of 1: 1;
[0067] b. Chromatographic column requirements: the chromatographic column is a CLC-ODS column, the column height × diameter is 150mm × 6.0mm, the pore diameter of the capillary column is 5 μm, and the column temperature is 30°C;
[0068] c. Detection wavelength: 335mm;
[0069] d. Flow rate: 0.8ml / min;
[0070] B. Preparation of reference substance solution:
[0071]Precisely weigh analytically pure oridonin and rosmarinic acid reference substances, respectively add analytically pure methanol to make a solution containing 1 mg of oridonin or rosmarinic acid per 1 ml of solution;
[0072] C, preparation of the test solution:
[0073] Accurately weigh 1g of the to-be-tested Radix Grass syrup, extract twice with a KQ-700...
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