首页> 外文期刊>Journal of Microencapsulation: Microcapsules Liposomes Nanoparticles Microcells Microspheres >Co-encapsulation of human serum albumin and superparamagnetic iron oxide in PLGA nanoparticles: Part II. Effect of process variables on protein model drug encapsulation efficiency
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Co-encapsulation of human serum albumin and superparamagnetic iron oxide in PLGA nanoparticles: Part II. Effect of process variables on protein model drug encapsulation efficiency

机译:人血清白蛋白和超顺磁性氧化铁在PLGA纳米颗粒中的共包封:第二部分。工艺变量对蛋白质模型药物包封效率的影响

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摘要

This study investigates encapsulation efficiency of model drug, encapsulated by magnetic poly D, L-lactic-co-glycolic acid (PLGA) nanoparticles (NPs). This is the following part of our preceding paper, which is referred in this paper as Part I. Magnetic nanoparticles and model drug human serum albumin (HSA)-loaded PLGA NPs were prepared by the double emulsion solvent evaporation method. Among five important process variables, concentration of PLGA and concentration of HSA in the inner aqueous phase along with their cross-effect had the strongest influence on the encapsulation efficiency. Encapsulation efficiency of nanoparticles ranged from 18% to 97% depending on the process conditions. Higher encapsulation efficiencies can be achieved by using low HSA and high PLGA concentrations. The optimization process, carried out by exact mathematical tools using GAMSTM/MINOS software makes it easier to find out optimum process conditions to achieve comparatively high encapsulation efficiency (e.g. 92.3%) for relatively small-sized PLGA NPs (e.g. 155 nm).
机译:这项研究调查了模型药物的包封效率,其被磁性聚D,L-乳酸-乙醇酸共聚物(PLGA)纳米颗粒(NPs)包裹。这是我们先前论文的以下部分,在本文中称为第一部分。磁性纳米颗粒和模型药物人血清白蛋白(HSA)负载的PLGA NPs是通过双乳液溶剂蒸发法制备的。在五个重要的工艺变量中,内部水相中PLGA的浓度和HSA的浓度以及它们的交叉效应对包封效率的影响最大。取决于工艺条件,纳米颗粒的包封效率为18%至97%。通过使用低HSA和高PLGA浓度可以实现更高的封装效率。使用GAMSTM / MINOS软件由精确的数学工具执行的优化过程可以更轻松地找到最佳工艺条件,以实现相对较小的PLGA NP(例如155 nm)相对较高的封装效率(例如92.3%)。

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