Sport fatigue resisting folic acid layered double hydroxid (LDH) nano nutritional supplement and preparation method thereof
A double hydroxide and hydroxide technology, applied in the directions of antitoxins, drug combinations, pharmaceutical formulations, etc., can solve the problems of low drug stability, short drug half-life, lack of specificity, etc., and achieve good biocompatibility, Good anti-exercise fatigue, good ability effect
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[0049] Preparation of Folic Acid / Layered Double Hydroxide Nanometer Drug Delivery System
[0050] (1) Preparation of folic acid-LDH by co-precipitation method
[0051] 1. Prepare Mg(NO 3 ) 2 ·6H 2 O(0.6923g, 0.027mol) and Al(NO 3 ) 3 ·9H 2 A total of 90ml of O (0.5401g, 0.014mol) metal mixed salt solution, in which the molar ratio of Mg / Al is 2:1; and 30ml of folic acid solution (0.2118g, 0.016mol);
[0052] 2. Put the metal salt mixed solution in N 2 Under the atmosphere, it was added dropwise to the vigorously stirred folic acid aqueous solution, during which the co-precipitation reaction temperature of the system was maintained at 80°C, and 1M NaOH solution was continuously added and the pH of the system was kept within the range of 10.0±0.2;
[0053] 3. Put the resulting suspension in N 2 React under atmosphere for 5 hours;
[0054] 4. Filtration and washing: Use a suction filter to filter the suspension, wash 2-3 times and collect the precipitate;
[0055] 5. Vacuum drying the filte...
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