吲哚布芬緩釋微丸的制備及其體外釋放
[Abstract]:Objective to prepare an indole-ibufen sustained-release pellet which is simple and easy to be amplified. Methods combined with the bottom spray technique of fluidized bed and the liquid phase stratification method, the drug loaded pellets were prepared by using the blank pellet core and the new water dispersion Kollicoatine SR30D as the coating material. The factors of coating prescription were investigated. The effect of heat treatment conditions and release medium on the release degree. The porosity and specific surface area of the coating film were measured by BET surface area analyzer, and the mechanism of the effect of pore-forming agent on the porosity of the coating film was discussed. The stability of pellets under different conditions was investigated and the release mechanism of pellets in vitro was inferred. Results the indole ibufen sustained release pellets had a good roundness, a smooth coating film, a drug loading mass fraction of about 50%, and stable release characteristics in both accelerated and long-term tests. The addition of pore-forming agent can increase the pore volume and the number of pores in the film, thus increasing the specific surface area of the film. The drug release mechanism of pellets in vitro accords with the first order kinetics. Conclusion the indole ibufen sustained-release pellets are stable, simple and easy to operate.
【作者單位】: 沈陽藥科大學藥學院;
【分類號】:R943
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