Synthesis and characterization of Fe3O4@SiO2 core-shell magnetic microspheres for extraction of genomic DNA from human whole blood

Guopeng Li, Bin Shen, Nongyue He, Chao Ma, Sauli Elingarami, Zhiyang Li
Journal of Nanoscience and Nanotechnology 2011, 11 (12): 10295-301
An improved procedure was described for preparation of monodisperse Fe3O4@SiO2 core-shell magnetic microspheres via solvothermal method followed by a modified Stöber process. The magnetic composite microspheres were characterized with TEM, SEM, FTIR and VSM. Genomic DNA was then extracted from human whole blood using the as synthesized magnetic microspheres on the Eppendorf epMotion5075 workstation. The quality of eluted DNA was evaluated by PCR. The method was very expeditious without using toxic compounds such as phenol or chloroform and can be used for further molecular biology experiments.

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