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金雀异黄素壳聚糖纳米粒子体外释放动力学研究 被引量:1

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摘要 采用透析法考察不同介质p H值和离子浓度对金雀异黄素壳聚糖纳米粒子体外释放的影响,并采用零级动力学方程、一级动力学方程、Higuchi方程和双相动力学方程,对纳米粒子的体外释放动力学进行探讨。结果表明,该纳米粒子的体外释放与介质p H值和离子浓度有关,随着介质p H值增大,纳米粒子中药物释放量减少;随着介质中离子浓度的增大,纳米粒子的释药量相应增大。释药数据拟合显示,金雀异黄素对照品在含40%乙醇的磷酸盐缓冲液(PBS)中的体外释放符合零级动力学方程,呈线性释放,释放速率常数为0.122 min^(-1);而该纳米粒子在释放介质中的释药行为符合双相动力学方程,先快速释药,后缓慢释放,释放速率常数分别为0.110、0.032 min^(-1)。
出处 《江苏农业科学》 北大核心 2015年第11期280-282,共3页 Jiangsu Agricultural Sciences
基金 江苏省研究生科技创新计划(编号:CXZZ13_0893) 江苏省2012年度"青蓝工程"资助项目
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