Method for measuring content of ursolic acid in glossy privet fruit and astragalus membranaceus healthy energy-strengthening preparation
A technique for righting and determination of Zhenqi, which is applied in the directions of measuring devices, instruments, scientific instruments, etc., can solve the problems of inability to form quality inspection standards and undisclosed determination of ursolic acid content.
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Embodiment 1
[0067] Determination of the content of ursolic acid in Zhenqi Fuzheng Capsules (prepared according to the method described in the example of invention patent 200310122216.7):
[0068] (1) Chromatographic conditions and system suitability test: octadecylsilane bonded silica gel is used as filler; acetonitrile: methanol: 0.5% ammonium acetate = 67:12:21 is used as mobile phase; flow rate is 0.8-1.0mL min -1 ; The detection wavelength is 210nm; the column temperature is 25; the number of theoretical plates in ℃ should not be less than 1000 based on the peak of ursolic acid;
[0069] (2) Preparation of reference substance solution: Accurately weigh an appropriate amount of ursolic acid reference substance, add methanol to dissolve, and make 1 mg / mL ursolic acid reference substance solution;
[0070] (3) Preparation of the test solution: Accurately weigh 14g of the contents of Zhenqi Fuzheng Capsules, accurately add 100mL of methanol, weigh it, extract it by ultrasonic for 40min, m...
Embodiment 2
[0073] Determination of the content of ursolic acid in Zhenqi Fuzheng tablet (prepared according to the method described in the example of invention patent 200310122216.7):
[0074] (1) Chromatographic conditions and system suitability test: Octadecylsilane bonded silica gel is used as filler; 0.04mol / L sodium dihydrogen phosphate: acetonitrile = 20:80 is used as mobile phase; flow rate is 0.8~1.0mL min -1 ; The detection wavelength is 210nm; the column temperature is 25; the number of theoretical plates in ℃ should not be less than 1000 based on the peak of ursolic acid;
[0075] (2) Preparation of reference substance solution: Accurately weigh an appropriate amount of ursolic acid reference substance, add methanol to dissolve, and make 1 mg / mL ursolic acid reference substance solution;
[0076] (3) Preparation of the test solution: Accurately weigh 14g of Zhenqi Fuzheng tablet, accurately add 100mL of methanol, weigh the weight, ultrasonically extract for 60min, make up the ...
Embodiment 3
[0079] Determination of the content of ursolic acid in Zhenqi Fuzheng Granules (prepared according to the method described in the example of invention patent 200310122216.7):
[0080] (1) Chromatographic conditions and system suitability test: octadecylsilane bonded silica gel was used as filler; acetonitrile: methanol: 0.01% ammonium acetate = 70:15:15 was used as mobile phase; flow rate was 1.5mL min -1 ;The detection wavelength is 220nm; the column temperature is 40°C;
[0081] (2) Preparation of reference substance solution: Accurately weigh an appropriate amount of ursolic acid reference substance, add methanol to dissolve, and make 1 mg / mL ursolic acid reference substance solution;
[0082] (3) Preparation of the test solution: Accurately weigh 14g of Zhenqi Fuzheng Granules, accurately add 100mL of methanol, weigh the weight, ultrasonically extract for 30 minutes, make up the weight with methanol, and filter; take the subsequent filtrate, which is the test solution ; ...
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