Quality control method of Gongyankang grannule
A quality control method, Gongyankang's technology, is applied in the field of quality control of Gongyankang granules, which can solve problems such as insufficient purification of solutions, many impurities, and insufficient separation
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[0047] The preparation method comparison of need testing solution:
[0048] Method 1: Take 9g of this product, grind it finely, add 30ml of ethanol, heat and reflux for 1 hour, let it cool, filter, evaporate the filtrate to dryness, add 10ml of water to dissolve the residue, add water-saturated n-butanol to extract twice, 25ml each time, Combine the n-butanol solution, extract twice with n-butanol-saturated water, 10ml each time, discard the water solution, evaporate the n-butanol layer to dryness, add 1ml methanol to the residue to dissolve, and use it as the test solution.
[0049] Method 2: Take 9g of this product, grind it finely, add methanol 40ml, sonicate for 20 minutes, filter, evaporate the filtrate to dryness, dissolve the residue in 20ml of heated water, put it in a separatory funnel, let it cool, and shake it with ether to extract 3 Once, 20ml each time, discard the ether extract, shake the aqueous solution twice with water-saturated n-butanol, 20ml each time, comb...
Embodiment 1
[0199] [Identification] (1)——TLC identification of Bupleurum chinensis: Take 9g of this product, grind it finely, add 40ml of methanol, ultrasonicate for 20 minutes, filter, evaporate the filtrate to dryness, dissolve the residue in 20ml of heated water, set aside Put it in a liquid funnel, let it cool, shake and extract with diethyl ether 3 times, 20ml each time, discard the diethyl ether extract, shake the aqueous solution with n-butanol saturated with water, extract 2 times, 20ml each time, combine the n-butanol extracts, and use Wash twice with water saturated with n-butanol, 20ml each time, discard the water, evaporate the n-butanol solution to dryness, add 1ml methanol to the residue to dissolve, add 1g neutral alumina (100-200 mesh), mix well, evaporate Dry, add to a neutral alumina column (3g, 100-200 mesh, inner diameter 9mm, dry packing), elute with 30ml of 80% methanol, collect the eluate, evaporate to dryness, add 1ml of methanol to the residue to dissolve , as the...
Embodiment 2
[0218] [Identification] (1)——TLC identification of Bupleurum chinensis: Take 9g of this product, grind it finely, add 30ml of ethanol, heat and reflux for 30 minutes, filter, evaporate the filtrate to dryness, dissolve the residue in 20ml of heated water, set aside Put it in a liquid funnel, let it cool, shake and extract with toluene twice, 20ml each time, discard the toluene extract, and shake the aqueous solution with water-saturated n-butanol for three times, 15ml each time, combine the n-butanol extracts, and use normal Wash with butanol-saturated water three times, 25ml each time, discard the water, evaporate the n-butanol solution to dryness, add 2ml of methanol to the residue to dissolve, add 2g of neutral alumina (100-200 mesh), mix well, and evaporate to dryness , added to a neutral alumina column (6g, 100-200 mesh, inner diameter 9mm, dry-packed column), eluted with 50ml of 50% methanol, collected the eluate, evaporated to dryness, added 2ml of methanol to the residu...
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