Preparation and Antioxidant Capacity of Element Selenium Nanoparticles Sol–Gel Compounds
This paper reported the preparation and antioxidant capacities of element selenium nanoparticles (nanoSe0-ascorbic acid (Vc) sol and nanSe0/Vc/selenocystine (SeCys) sol–gel compounds. NanoSe0-Vc sol was prepared by reduction of selenious dioxide
(SeO2 with Vc. In the nanoSe0-Vc sol, highly concentrated Vc was also used as a modifier to modulate the diameter of Se0 nanoparticles in the liquid phase. Then excellent nanoSe0 sol–gel compounds were obtained by adding SeCys into the nanoSe0-Vc
sol. The structure of the nanoSe0/Vc/SeCys sol–gel compounds was defined, which was constructed via C–Se, Se–H and O=C–Se valences and by interaction between SeCys and Vc via peptide bonds, esterification and dehydration. The antioxidant capacities of the
nanoSe0-Vc sol and the nanoSe0/Vc/SeCys sol–gel compounds were estimated by oxygen radical absorption capacity (ORAC) assay. The nanoSe0/Vc/SeCys sol–gel compounds possessed a strong antioxidant capacity due to forming the perfect three-dimensional
(3D) frameworks structure. The results suggested that the nanoSe0-Vc sol and the nanoSe0/Vc/SeCys sol–gel compounds might be potential medicine, especially antioxidant.
Keywords: ANTIOXIDATIVE CAPACITY; ASCORBIC ACID; ELEMENT SELENIUM NANOPARTICLES; MICROSTRUCTURE; SELENOCYSTINE; SOL–GEL COMPOUNDS
Document Type: Research Article
Publication date: 01 June 2011
- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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