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- W2885148454 abstract "Abstract Two facile methods for bulk preparation of γ-Fe2O3/SiO2 agglomerated magnetic nanocomposite (MNC) particles for magnetic separation of nucleic acids (NAs) are compared together. Different silica coating approaches were used for iron oxide silanization: Stober method and sodium silicate dense-liquid process. Additional thermal treatment at 750 °C provided thermal and structural stability to the MNCs. The structural characteristics, magnetic properties, size and morphology of the synthesized materials have been studied. To validate the synthesized materials, the MNCs were used for the isolation of nucleic acids from human buccal epithelium cells and two human biosamples (whole blood and plasma) with addition of pathogenic viruses. It was shown that the prepared near-micron sized agglomerates of superparamagnetic (Ms = 40–45 emu/g) γ-Fe2O3/SiO2 MNC particles are fully coated with silica. The synthesized materials combine the advantages of nanosized (superparamagnetism) and micron-sized objects (separability, average precipitation stability). Both types of the MNCs described in the paper have demonstrated similar effectiveness of NAs isolation, comparable with commercial MAGNO-sorb® total NAs isolation kit (InterLabService, Russia) used as a reference. The appropriate structural stability, high magnetization and proper purity of the isolated NAs (A260/A280 ratio near 1.9) make the studied MNCs promising materials for magnetic bioseparation." @default.
- W2885148454 created "2018-08-22" @default.
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- W2885148454 date "2018-11-01" @default.
- W2885148454 modified "2023-09-27" @default.
- W2885148454 title "Facile bulk preparation and structural characterization of agglomerated γ-Fe2O3/SiO2 nanocomposite particles for nucleic acids isolation and analysis" @default.
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- W2885148454 doi "https://doi.org/10.1016/j.matchemphys.2018.08.011" @default.
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