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Formulation and evaluation of lamivudine enclosed alginate microbeads

机译:拉米夫定封闭藻酸盐微珠的配制与评价

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The objective of the present study was to prepare and evaluate microbeads for the controlled release of lamivudine from the prepared microbeads using different polymers. The microbeads were prepared by ionic gelation method. The prepared microbeads were characterized for FTIR, scanning electron microscopy (SEM), the percentage drug content, entrapment efficiency, and in vitro dissolution studies. Accelerated stability studies were also carried out for the formulations. The microbeads were spherical in shape and free flowing. The entrapment efficiency was varying from 76 to 86%. The release of drug from the microbeads was extended up to 8 to 12 hours. FTIR studies showed the stable character of lamivudine in the microbeads. SEM studies revealed that the microbeads were porous in nature. The release kinetics studies revealed that the prepared microbeads were best fitted to the zero order for all eight formulations and peppa’s model. The release kinetics data and characterization studies indicated that the drug release from microbeads was diffusion – controlled and the microbeads were stable in nature.
机译:本研究的目的是使用不同的聚合物制备和评估拉米夫定从制备的微珠中控制释放的微珠。通过离子凝胶法制备微珠。制备的微珠的特征在于FTIR,扫描电子显微镜(SEM),药物含量百分比,包封率和体外溶出度研究。还对该制剂进行了加速的稳定性研究。微珠为球形且自由流动。包封率从76%到86%不等。药物从微珠的释放延长了长达8至12小时。 FTIR研究表明拉米夫定在微珠中具有稳定的特性。 SEM研究表明,微珠本质上是多孔的。释放动力学研究表明,对于所有八种配方和peppa模型,制备的微珠最适合零级。释放动力学数据和表征研究表明,微珠中的药物释放是受扩散控制的,并且微珠本质上是稳定的。

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