2009
DOI: 10.1016/j.jmmm.2009.02.110
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Separation of PCR-ready DNA from dairy products using magnetic hydrophilic microspheres and poly(ethylene glycol)–NaCl water solutions

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Cited by 12 publications
(5 citation statements)
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“…In addition, considerable DNA degradation complicates the genetic analysis of processed foods. The solution containing critical concentrations PEG 6,000 and NaCl enables the DNA condensation process which is necessary for DNA adsorption on carboxyl‐modified P(HEMA‐ co ‐GMA) magnetic particles (Rittich et al, ). This experimental arrangement was used for bacterial DNA isolation from different complex matrices and newly from plants and processed plant foods in this work.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…In addition, considerable DNA degradation complicates the genetic analysis of processed foods. The solution containing critical concentrations PEG 6,000 and NaCl enables the DNA condensation process which is necessary for DNA adsorption on carboxyl‐modified P(HEMA‐ co ‐GMA) magnetic particles (Rittich et al, ). This experimental arrangement was used for bacterial DNA isolation from different complex matrices and newly from plants and processed plant foods in this work.…”
Section: Discussionmentioning
confidence: 99%
“…The above mentioned mechanisms were reviewed by Rittich and Španová (). Hydrophilic magnetic nonporous poly(2‐hydroxyethyl methacrylate‐ co ‐glycidyl methacrylate) (P(HEMA‐ co ‐GMA)) and poly(glycidyl methacrylate) (PGMA) microspheres covered with carboxyl groups have been successfully used for the microisolation of high‐molecular‐weight bacterial DNA from different complex matrices containing PCR inhibitors such as fermented dairy products and cheeses (Rittich et al, ; Trachtová et al, ). However, they were not used for DNA isolation from plant samples, yet.…”
Section: Introductionmentioning
confidence: 99%
“…Unmodified single‐stranded oligonucleotide (ssDNA) can adsorb efficiently on negatively charged carboxylic acid‐functionalised magnetic nanoparticles, whereas double‐stranded (ds) DNA does not possess this adsorbing property . It can be surprising that magnetic particles covered by carboxyl groups were successfully used for the isolation of PCR products , plasmid DNA and bacterial DNAs from different complex samples . .…”
Section: Applications Of Magnetic Particles In Dna Separationsmentioning
confidence: 99%
“…Thus, the effective size of the monocation in compact DNA is expected to be closer to the size of free ion without a hydration shell . The supercoiled structure of DNA can be folded into a more stable compact state due to the crowding effect in the PEG and NaCl environment. The negative charge on the folded parts is expected to be almost completely neutralised for compact DNA in PEG solution , leaving ∼10% of the negative charge retained on the unfolded random‐coiled parts.…”
Section: Applications Of Magnetic Particles In Dna Separationsmentioning
confidence: 99%
“…Ωστόσο, η χρήση του σε μικρο-ρευστονικές διατάξεις για καθαρισμό DNA, δεν αναφέρεται σε πρόσφατες βιβλιογραφικές επισκοπήσεις[146,176]. Έχει, επίσης, αναφερθεί σε επισκόπηση για καθαρισμό DNA με μαγνητικά σωματίδια, ότι το TiO2 μπορεί να προκαλέσει βλάβη στο ssDNA και το dsDNA[145].Υπό τις συνθήκες αυτές το δίκλωνο DNA γίνεται πιο συμπαγές και δη, η υπερελικωμένη του δομή μπορεί να διπλώσει περαιτέρω, εξαιτίας του φαινομένου «συνωστισμού» (crowding effect) σε περιβάλλον NaCl και PEG[163]. Το αρνητικό φορτίο στους διπλωμένους τομείς του αναμένεται να μετατραπεί σε ουδέτερο για συμπαγές DNA σε διάλυμα PEG[205], αφήνοντας μόνο 10% του αρνητικού του φορτίου.…”
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