β-胡萝卜素壳聚糖纳米粒制备工艺优化
2021-07-15随兰多王煜鲍献杰黄兰兰叶贝李妍
随兰多 王煜 鲍献杰 黄兰兰 叶贝 李妍



摘 要:以β-胡萝卜素为试验材料,通过离子交联法构建β-胡萝卜素纳米粒,在不同药载比、温度、pH下研究其载药率和包封率的变化趋势,并对其进行优化设计。结果表明:β-胡萝卜素壳聚糖纳米粒的载药性能最佳工艺条件为药载比6∶1、温度30℃、pH 5,在此条件下包封率为61.74%,载药率16.42%。由此可见,通过离子交联法构建β-胡萝卜素纳米粒具有良好的包封率和载药率。
关键词:β-胡萝卜素;壳聚糖;纳米粒;载药性能
中图分类号 TS264.4文献标识码 A文章编号 1007-7731(2021)11-0137-04
Optimization the Preparation of β-Carotene-Chitosan Nanoparticles
SUI Landuo et al.
(College of Food and Bioengineering, Bengbu University, Bengbu 233030, China)
Abstract: In this experiment ,β-Carotene were constructed by ion crosslinking method to study their drug loading and encapsulation efficiency under different drug loading ratio, temperature and pH. The results showed that the best technological conditions for β-Carotene chitosan nanoparticles: the drug loading ratio was 6∶1, the temperature was 30℃, the pH was 5, the encapsulation efficiency was 61.74% and the drug loading was 16.42%. The experiment results showed that β-carotene chitosan nanoparticles were stable and the drug loading was good.
Key words: β-Carotene; Chitosan; Nanoparticles; Drug loading properties
類胡萝卜素是一种天然色素,普遍存在于不同颜色的花卉、蔬菜、水果中,具有抗癌、降血压、提高免疫力、抗氧化、延缓衰老等保健功效[1]。新鲜的水果和蔬菜富含大量的类胡萝卜素,是人们获取类胡萝卜素的主要来源,但通过饮食摄取的类胡萝卜素生物利用度不到5%[2]。食品中的类胡萝卜素极其不稳定,易被氧化,且主要以结合蛋白的形式存在于叶绿体或色细胞等结构中[3],经过一系列的反应释放至消化系统中,然后才能被人体利用。因此,改变类胡萝卜素的摄取途径,提高类胡萝卜素的生物利用度是目前重要的研究课题。壳聚糖(chitosan,CS)是一种天然的阳离子聚合物,自然界中来源丰富。其结构中有多个活性官能团可改性修饰,便于制成多种药物递送系统和组织工程支架,在生物医药领域应用广泛[4]。另外,壳聚糖具有生物降解性、生物相容性、无毒性、增强免疫等多种生物功能,是良好的药物载体材料[5]。……
