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Formulation of curcumin-loaded solid lipid nanoparticles produced by fatty acids coacervation technique

机译:脂肪酸凝聚技术制备姜黄素负载固体脂质纳米粒的配方

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摘要

Curcumin (CU) loaded solid lipid nanoparticles (SLNs) of fatty acids (FA) were prepared with a coacervation technique based on FA precipitation from their sodium salt micelles in the presence of polymeric non-ionic surfactants. Myristic, palmitic, stearic, and behenic acids, and different polymers with various molecular weights and hydrolysis grades were employed as lipid matrixes and stabilisers, respectively. Generally, spherical-shaped nanoparticles with mean diameters below 500 nm were obtained, and using only middle-high hydrolysis, grade-polymer SLNs with diameters lower than 300 nm were produced. CU encapsulation efficiency was in the range 28-81% and highly influenced by both FA and polymer type. Chitosan hydrochloride was added to FA SLN formulations to produce bioadhesive, positively charged nanoparticles. A CU-chitosan complex formation could be hypothesised by DSC analysis, UV-vis spectra and chitosan surface tension determination. A preliminary study on HCT-116 colon cancer cells was developed to evaluate the influence of CU-loaded FA SLNs on cell viability.
机译:在聚合物非离子表面活性剂存在下,基于脂肪酸从钠盐胶束中沉淀出的脂肪酸,通过凝聚技术制备了含有姜黄素(CU)的脂肪酸(FA)固体脂质纳米颗粒(SLN)。肉豆蔻酸,棕榈酸,硬脂酸和山hen酸以及具有不同分子量和水解等级的不同聚合物分别用作脂质基质和稳定剂。通常,获得平均直径低于500 nm的球形纳米颗粒,仅使用中高水解度,即可生产出直径低于300 nm的等级聚合物SLN。 CU的封装效率在28-81%的范围内,并且受FA和聚合物类型的影响很大。将壳聚糖盐酸盐添加到FA SLN配方中,以生产生物粘附的,带正电的纳米粒子。可以通过DSC分析,UV-可见光谱和壳聚糖表面张力测定来推测CU-壳聚糖复合物的形成。对HCT-116结肠癌细胞进行了初步研究,以评估CU加载的FA SLN对细胞生存力的影响。

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