Method for measuring content of polysaccharides in glossy privet fruit and astragalus membranaceus healthy energy-strengthening preparation
A technique for righting and determination of Zhenqi, which is applied in the direction of color/spectral property measurement, etc., can solve the problems of affecting the determination result of polysaccharide content, high extraction cost, unguaranteed drug quality, etc.
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Embodiment 1
[0097] Example 1 of the present invention: The method for determining the content of polysaccharides in Zhenqi Fuzheng preparation (phenol-sulfuric acid method) includes the following steps:
[0098] (1) Preparation of the reference substance solution: take an appropriate amount of anhydrous glucose reference substance, weigh it accurately, add water to make 1mL of a solution containing 0.1mg, and obtain it;
[0099] (2) Preparation of the test solution: Accurately weigh 2.0 g of Zhenqi Fuzheng preparation or its contents, accurately add 50 mL of water, weigh, ultrasonically, reflux for 30-60 min or microwave extraction for 5-15 min, make up the weight, filter Precisely measure 25mL of the filtrate, add 95% ethanol to the filtrate to make the alcohol content reach 80%, filter, wash the precipitate with 95% ethanol, evaporate the precipitate, add water to dissolve and transfer to a 25mL volumetric flask, ultrasonic 10 ~30min, dilute to the mark, shake well, and you get it;
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Embodiment 2
[0103] Example 2 of the present invention: The method for determining the content of polysaccharides in Zhenqi Fuzheng preparation (phenol-sulfuric acid method) includes the following steps:
[0104] (1) Preparation of the reference substance solution: take an appropriate amount of anhydrous glucose reference substance, weigh it accurately, add water to make 1mL of a solution containing 0.1mg, and obtain it;
[0105] (2) Preparation of the test solution: Accurately weigh 2.0 g of Zhenqi Fuzheng preparation or its contents, accurately add 50 mL of water, weigh it, and make up the weight by ultrasonication, reflux for 30-60 min or microwave extraction for 5-15 min; 3000 Centrifuge at ~5000rpm for 3min, take the supernatant, and get it;
[0106] (3) Preparation of 5% phenol reagent: Take an appropriate amount of phenol, add 0.1g of aluminum flakes and 0.05g of sodium bicarbonate, distill, collect the fraction at 180°C, weigh 7.5g, add 150mL of water to dissolve, put it in a brown...
Embodiment 3
[0109] Example 3 of the present invention: The method for determining the content of polysaccharides in Zhenqi Fuzheng preparation (phenol-sulfuric acid method) includes the following steps:
[0110] (1) Preparation of the reference substance solution: take an appropriate amount of anhydrous glucose reference substance, weigh it accurately, add water to make 1mL of a solution containing 0.1mg, and obtain it;
[0111] (2) Preparation of the test solution: Accurately weigh 6.0 g of Zhenqi Fuzheng preparation or its contents, put it in a 250mL flask, extract it with petroleum ether, diethyl ether and 90% ethanol in sequence at 60-90°C, and evaporate the residue to dryness , accurately add 150mL of water, weigh, ultrasonically, reflux for 30-60min or microwave extraction for 5-15min, make up the weight, and filter; accurately measure 100mL of the subsequent filtrate, add activated carbon, decolorize, filter, accurately measure 50mL of the subsequent filtrate, Add 95% ethanol to ma...
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