A kind of Uyghur drug Chama ancient polysaccharide and its extraction method and application
A technology for polysaccharide extraction and Uyghur medicine, which is applied in the field of plant effective component extraction and chamagu polysaccharide extraction. It can solve the problems of not being able to clarify the structure of the specific active ingredient, not knowing the approval of the active product, and failing to separate the active ingredient. , to achieve the effects of clear pharmacology, easier control of drug efficacy, and wide applicability
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Embodiment 1
[0052] Embodiment 1: Preparation of Chama ancient polysaccharide of the present invention
[0053] In the present invention, the extraction of Chama ancient polysaccharide comprises the following steps:
[0054] (1) Take the dry medicinal material of Chamagu, add 3 times the volume of petroleum ether, reflux and degrease continuously at 60°C for 2 hours, filter the medicinal residue, dry it for later use, and recover the filtrate.
[0055] (2) Take the degreased Chama ancient medicinal material, add 30 times the quality of water, 90°C-100°C continuous reflux extraction for 3 times, each time for 2h, combine three extracts, after filtering, the filtrate is concentrated to 20% of the total amount, Add absolute ethanol until the volume fraction of the concentrated filtrate is 80%, and put it at 4°C overnight.
[0056] (3) Suction filtration step (2) Collect the precipitate after overnight solution, add 10-30 times of distilled water to redissolve, fully stir at room temperature ...
Embodiment 2
[0062] Embodiment 2: Preparation of Chama ancient polysaccharide of the present invention
[0063] In the present invention, in the extraction of Chama ancient polysaccharide, step (2) uses 90 DEG C of water to continuously reflux extraction 3 times; Step (3) uses the dialysis bag of 7000Da molecular weight; Said step (6) takes 500 parts of BRN, adds 0.03 times of pure water , fully dissolved at room temperature; other methods were the same as in Example 1, and the prepared BRNP-1 was prepared at a concentration of 400 μg·mL-1; the concentration of BRNP-2 was 400 μg·mL-1.
Embodiment 3
[0064] Example 3: Determination of the uniformity and apparent molecular weight of the ancient polysaccharide extracted from the present invention
[0065] Take 5mg of T-series dextran standard products (molecular weights are 2000, 670, 410, 270, 150, 80, 50, 12, 5 and 1kD), dissolve them fully in 1mL of ultrapure water, and prepare 5mg·mL-1 Dextran series standard solutions, passed through a 0.22μm filter membrane, set aside. Take 10 μL standard solution respectively, inject into high-performance gel chromatography (HPGPC), and use 0.1M NaNO 3 Elution, the flow rate is 0.6mL·min -1 , column temperature 35°C. Draw the standard curve with the peak area as the ordinate and the molecular weight as the abscissa.
[0066] Get 5 mg of the single-component sample of chama ancient polysaccharide extracted by the extraction method of the present invention, fully dissolve it with 1 mL of ultrapure water, and configure it into 5 mg·mL -1 The sample solution was passed through a 0.22 ...
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