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- W2023573990 abstract "The present study, reports the utilization of berenil as ligand in a negative pseudo-affinity chromatographic step to purify the plasmid pVAX1-LacZ from Escherichia coli clarified lysates. The chromatographic support was prepared by coupling berenil to epoxy-activated Sepharose and was qualitatively and quantitatively characterized using scanning electron microscopy, Fourier transformed infrared spectroscopy and elemental analysis. The clarified lysate was loaded onto the berenil-Sepharose support with 0.55M of ammonium sulphate in the eluent, achieving the immediate elution of plasmid DNA. The impurities tightly bound to the support, were eluted after decreasing the salt concentration to 0M. The overall process enabled the recovery of 87% of loaded plasmid DNA with a HPLC purity of ≫99% and according to FDA specifications. This method represents an alternative approach to the previous utilization of the same chromatographic pseudo-affinity support in a positive mode. It uses lower amounts of salt and one-step chromatographic procedure, resulting in smaller operating time and costs and representing an alternate procedure for plasmid DNA purification." @default.
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- W2023573990 date "2014-01-01" @default.
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- W2023573990 title "Negative pseudo-affinity chromatography for plasmid DNA purification using berenil as ligand" @default.
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- W2023573990 doi "https://doi.org/10.1016/j.jchromb.2013.10.043" @default.
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