Enrofloxacin chitosan nanoparticles
A technology of chitosan nanoparticles and enrofloxacin, which is applied in the field of enrofloxacin chitosan nanoparticles, can solve the problems of large gastrointestinal irritation, poor oral adaptability, drug residues, etc., and reduce drug administration The number of times, the slow release rate, the effect of good efficacy
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[0024] 1. Weigh 30mg of chitosan, add it to 20mL of 1wt% acetic acid solution, stir and dissolve and swell overnight to obtain chitosan gel;
[0025] 2. Weigh sodium tripolyphosphate and dissolve it in deionized water to obtain a 1.5 mg / mL sodium tripolyphosphate solution;
[0026] 3. Weigh 4 mg of enrofloxacin, add it to chitosan gel, stir well to dissolve it, add 1mol / l NaOH solution to adjust the pH value to 5.0, continue stirring at room temperature, and add sodium tripolyphosphate solution drop by drop , when light blue opalescence occurs in the system, stop adding the sodium tripolyphosphate solution dropwise, the volume of the sodium tripolyphosphate solution added dropwise is 8mL, and continue stirring for 1h to obtain a suspension of enrofloxacin chitosan nanoparticles liquid;
[0027] 4. Add the remaining enrofloxacin-chitosan nanoparticle suspension into a freezing bottle, pre-freeze at -70°C for 2 hours, and then vacuum freeze-dry at -50°C to obtain enrofloxacin-c...
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