Preparation of cellulose-based nanoparticles via electrostatic self-assembly for the pH-responsive delivery of astaxanthin
文献类型: 外文期刊
作者: Gan, Miaoyu;Cao, Ailing;Cai, Luyun;Xiang, Xia;Li, Jian;Luan, Qian
作者机构:
关键词: Astaxanthin;Cellulose nanofibers;Nanoparticles;pH-responsive;Controlled release
期刊名称: FOOD CHEMISTRY
ISSN: 0308-8146
年卷期: 2024 年 463 卷
页码:
收录情况: SCIE(2024版) ; ; EI(2024版)
摘要: Oral administration of astaxanthin (AST), a potent antioxidant, is limited owing to its low solubility, physicochemical stability, and bioavailability. This study developed pH-responsive nanocarriers by the electrostatic selfassembly of 2,2,6,6-tetramethylpiperidine-1-oxyradical (TEMPO)-oxidized cellulose nanofibers (TCNFs) and chitosan (CS) to enhance the intestinal delivery of AST. The TCNF/CS@AST nanoparticles were optimized through single-factor experiments and Box-Behnken design, subsequently overcoming the hydrophobicity of AST and demonstrating improved stability against environmental stressors and controlled release in the intestinal environment. Transmission electron microscopy confirmed the near-spherical shape of these nanoparticles, with an average hydrodynamic diameter of 64 nm. TCNF/CS@AST enhanced the antioxidant effectiveness of AST after digestion and in lipopolysaccharide-stimulated RAW 264.7 cells while demonstrating good cellular compatibility. These nanoparticles present a promising strategy for the oral delivery of hydrophobic bioactive compounds orally, with potential applications in precision nutrition.
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