Method for preparing colloidal bismuth pectin and method for controlling adhesiveness of medicine composition of colloidal bismuth pectin
A technology of colloidal bismuth pectin and control methods, which is applied in the direction of drug combinations, medical preparations with no active ingredients, medical preparations containing active ingredients, etc., and can solve the problems of insufficient quality control, poor product controllability, and high production costs. problems, to achieve reasonable and controllable content and uniformity, reduce drying time, and reduce measurement errors
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Embodiment 1
[0056] Preparation of colloidal bismuth pectin: (1) Add 166.67g of purified water into the reaction flask, add 29.22g of bismuth nitrate; add about 23.78g of 40% potassium hydroxide solution, adjust the pH to 6-8, and make it hydrolyze completely (i.e. re-test pH constant), filter to get filter cake bismuth hydroxide; then 40.56g of purified water and 17.89g of sorbitol are put into the beaker, after the sorbitol dissolves, filter cake bismuth hydroxide is added and stirred Finally, add about 50 g of 40% potassium hydroxide solution, stir to make it fully dissolve, and obtain a bismuth salt solution for subsequent use;
[0057] (2) Add the bismuth salt solution prepared in step (1) into the reaction bottle, stir, add 49ml of purified water, add pectin soft material at room temperature, after the addition is completed, heat up to about 40°C and stir, keep warm for 0.5 hours, and then add 105g of purified water, temperature controlled at 30-35°C and stirred for 1.5 hours; after ...
Embodiment 2
[0060] The preparation of colloidal bismuth pectin: (1) the preparation of bismuth salt solution: 166.67g purified water is joined in reaction flask, adds bismuth nitrate 29.22g; Add the 40% potassium hydroxide solution of 20g, adjust pH to 6, make it After the hydrolysis is complete (i.e. retest pH is constant), filter to get the filter cake bismuth hydroxide; then 40.56g of purified water and 17.89g of sorbitol are put into the beaker, and then the filter cake bismuth hydroxide is added after the sorbitol dissolves. After stirring, add 48g of 40% potassium hydroxide solution, stir to make it fully dissolved, and obtain a bismuth salt solution for subsequent use;
[0061] (2) Preparation of colloidal bismuth pectin: add the bismuth salt solution prepared above into the reaction bottle, stir, add 49ml of purified water, add pectin soft material at room temperature, after adding, heat up to 45°C and stir, and keep warm for 0.5 hours , then add 105g of purified water, and stir a...
Embodiment 3
[0064] The preparation of colloidal bismuth pectin: (1) the preparation of bismuth salt solution: 166.67g purified water is joined in reaction bottle, adds bismuth nitrate 29.22g; Add the 40% potassium hydroxide solution of 25g, adjust pH to 8, make it After the hydrolysis is complete (i.e. retest pH is constant), filter to get the filter cake bismuth hydroxide; then 40.56g of purified water and 17.89g of sorbitol are put into the beaker, and then the filter cake bismuth hydroxide is added after the sorbitol dissolves. After stirring, add 53 g of 40% potassium hydroxide solution, stir to make it fully dissolve, and obtain a bismuth salt solution for subsequent use;
[0065] (2) Preparation of colloidal bismuth pectin: add the bismuth salt solution prepared above into the reaction bottle, stir, add 49ml of purified water, add pectin soft material at room temperature, after adding, heat up to 45°C and stir, and keep warm for 0.5 hours , then add 105g of purified water, control t...
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