期刊
CARBOHYDRATE POLYMERS
卷 132, 期 -, 页码 574-581出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.06.064
关键词
Selenium nanoparticle; Antioxidant; Characterization; Chitosan
资金
- Twelfth Five Year National Science and Technology Plan [2011BAD23B00]
- Fund Project for Transformation of Scientific and Technological Achievements of Jiangsu Province [BA2009082]
Monodispersible selenium nanoparticles (SeNPs) were synthesized by using chitosan (CS) and carboxymethyl chitosan (CCS) as the stabilizer and capping agent using a facile synthetic approach. The structure, size, morphology and antioxidant activity of the nanocomposites were characterized by transmission electron microscopy (TEM), Ultraviolet-visible spectroscopy (UV-vis), Dynamic Light Scattering (DLS), Fourier transform infrared (FTIR), Thermogravimetric analysis (TGA). The results revealed that the monodispersible SeNPs (mean particle size of about 50 nm) were ligated with CS and CCS to form nanocomposites in aqueous solution for at least 30 days, and for 120 days the nanoparticles increased to 180 nm or so in size. The DPPH scavenging ability of CS-SeNPs was higher than that of CCS-SeNPs, and could reach 93.5% at a concentration of 0.6 mmol/L. Moreover, SeNPs, CS-SeNPs and CCS-SeNPs exhibited a higher ABTS scavenging ability in comparison to Na2SeO3. (C) 2015 Elsevier Ltd. All rights reserved.
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