Silica-coated La0.75Sr0.25MnO3 nanoparticles for magnetically driven DNA isolation
Language English Country Germany Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- DNA, Bacterial chemistry isolation & purification MeSH
- Lactobacillus cytology genetics MeSH
- Lanthanum chemistry MeSH
- Magnetic Phenomena * MeSH
- Magnetics MeSH
- Nanoparticles chemistry MeSH
- Silicon Dioxide chemistry MeSH
- Oxides chemistry MeSH
- Polymerase Chain Reaction MeSH
- Manganese Compounds chemistry MeSH
- Strontium chemistry MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- DNA, Bacterial MeSH
- Lanthanum MeSH
- manganese oxide MeSH Browser
- Silicon Dioxide MeSH
- Oxides MeSH
- Manganese Compounds MeSH
- Strontium MeSH
Magnetic La(0.75)Sr(0.25)MnO(3) nanoparticles possessing an approximately 20-nm-thick silica shell (LSMO(0.25)@SiO(2) ) were characterised and tested for the isolation of PCR-ready bacterial DNA. The results presented here show that the nanoparticles do not interfere in PCR. DNA was apparently reversibly adsorbed on their silica shell from the aqueous phase system (16% PEG 6000-2 M NaCl). The method proposed was used for DNA isolation from complex food samples (dairy products and probiotic food supplements). The isolated DNA was compatible with PCR. The main advantages of the nanoparticles tested for routine use were their high colloidal stability allowing a more precise dosage and therefore high reproducibility of DNA isolation.
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