Quality control method of mangnolia officinalis refined medicinal slice
A quality control method and technology for refining decoction pieces, which are used in measuring devices, instruments, scientific instruments, etc.
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Embodiment 1
[0037] Determination of the content of Magnolia officinalis refined decoction pieces by high performance liquid chromatography:
[0038] Chromatographic conditions and system suitability test, octadecylsilane bonded silica gel was used as filler; methanol-water (78:22) was used as mobile phase; detection wavelength was 294nm. The number of theoretical plates should not be less than 3800 based on the magnolol peak.
[0039]Preparation of reference substance solution: Accurately weigh the appropriate amount of magnolol reference substance and honokiol reference substance, and add methanol to prepare solutions containing 40 μg of magnolol and 24 μg of honokiol per 1 ml, respectively.
[0040] For the preparation of the test solution, take 0.2 g of the sample powder (passed through a No. 3 sieve), accurately weigh it, put it in a stoppered conical flask, add precisely 25 ml of methanol and ethanol mixed at 8.5:1, shake well, and Stopper, soak at 36°C for 16 hours, filter, accurat...
Embodiment 2
[0043] Determination of the content of Magnolia officinalis refined decoction pieces by high performance liquid chromatography:
[0044] Chromatographic conditions and system suitability test, octadecylsilane bonded silica gel was used as filler; methanol-water (78:22) was used as mobile phase; detection wavelength was 294nm. The number of theoretical plates should not be less than 3800 based on the magnolol peak.
[0045] Preparation of reference substance solution: Accurately weigh the appropriate amount of magnolol reference substance and honokiol reference substance, and add methanol to prepare solutions containing 40 μg of magnolol and 24 μg of honokiol per 1 ml, respectively.
[0046] For the preparation of the test solution, take 0.2 g of the sample powder (passed through a No. 3 sieve), accurately weigh it, put it in a stoppered Erlenmeyer flask, add precisely 25 ml of a mixture of methanol and ethanol at 8.8:1, shake well, and Stopper, soak at 38°C for 18 hours, filt...
Embodiment 3
[0049] Determination of the content of Magnolia officinalis refined decoction pieces by high performance liquid chromatography:
[0050] Chromatographic conditions and system suitability test, octadecylsilane bonded silica gel was used as filler; methanol-water (78:22) was used as mobile phase; detection wavelength was 294nm. The number of theoretical plates should not be less than 3800 based on the magnolol peak.
[0051] Preparation of reference substance solution: Accurately weigh the appropriate amount of magnolol reference substance and honokiol reference substance, and add methanol to prepare solutions containing 40 μg of magnolol and 24 μg of honokiol per 1 ml, respectively.
[0052] For the preparation of the test solution, take 0.2 g of the sample powder (passed through a No. 3 sieve), accurately weigh it, put it in a stoppered Erlenmeyer flask, add 25 ml of a mixture of methanol and ethanol at a ratio of 9.0:1, shake well, and Stopper, soak at 39°C for 20 hours, fil...
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