Detection method for traditional Chinese medicine preparation compounded Sichuan fritillary bulb extract tablets
A technology of compound Chuanbei essence tablet and detection method, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of identification of unephedra root and Bai Wei, etc., and achieve the same extraction effect, good separation degree, and short development time Effect
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preparation example Construction
[0058] Preparation of reference substance solution: Take 10mg of ephedrine hydrochloride reference substance, accurately weigh it, put it in a 100ml measuring flask, add methanol to dilute to the mark, shake well, accurately measure 2ml, place it in a 25ml measuring flask, and dilute to the mark with mobile phase , Shake well to make a reference solution containing 8μg of ephedrine hydrochloride per 1ml.
[0059] Preparation of test solution: Take 20 tablets of this product, grind finely, accurately weigh 0.4~0.6g of this product, put it in a 100ml measuring flask, add 50~70ml methanol, and ultrasonically treat 15~20min at a power of 120W and a frequency of 59KHz. , Dilute with methanol to the mark, shake well, filter, and discard the initial filtrate to obtain the test solution.
[0060] Determination method: accurately draw 8-12μl each of the reference solution and the test solution, and inject it into the liquid chromatograph for determination; each tablet of this product contai...
Embodiment 1
[0069] (1) Qualitative identification by thin layer chromatography
[0070] Qualitative identification of ephedrine and ephedrine A by thin-layer chromatography: Take 10 tablets of this product, grind them into fine pieces, add 30ml of water to dissolve, shake and extract with ether twice, each time the amount of ether is 20ml; discard the ether solution , The water solution is evaporated to dryness in a water bath, the residue is dissolved in 20ml of ethanol, filtered, the filtrate is evaporated to dryness in a water bath, and the residue is dissolved in 1ml of methanol to dissolve, as the test solution; another reference substance of ephedrine root and ephedrine A reference substance, Add methanol to make a mixed solution containing 1mg of ephedrine reference substance and 1mg of ephedrine A reference substance per 1ml, as the reference substance solution; according to TLC "Chinese Pharmacopoeia" 2010 edition a Appendix VIB test, absorb the above supply 10μl each of the test so...
Embodiment 2
[0081] (1) Qualitative identification by thin layer chromatography
[0082] Qualitative identification of ephedrine and ephedrine A by thin-layer chromatography: take 10 tablets of this product, grind them into fine pieces, add 40ml of water to dissolve, shake and extract 3 times with ether, each time the amount of ether is 30ml; discard the ether solution , The water solution is evaporated to dryness in a water bath, the residue is dissolved by adding 30ml of ethanol, filtered, the filtrate is evaporated to dryness in a water bath, and the residue is dissolved by adding 2ml of methanol to dissolve, as the test solution; another reference substance of ephedrine root and ephedrine A reference substance, Add methanol to make a mixed solution containing 1mg of ephedrine reference substance and 1mg of ephedrine A reference substance per 1ml, as the reference substance solution; according to TLC "Chinese Pharmacopoeia" 2010 edition a Appendix VIB test, absorb the above supply 12μl eac...
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