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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Navigating Large-Scale Plasmid DNA Purification : A Recommendation of Current and Future Downstream Purification Solutions

Eriksson, Matilda, Wells, Alva, Frey, Maria, Johansson, Lisa, Pettersson, Gabriel, Sjöberg, David January 2023 (has links)
Previous small-scale methods for plasmid DNA (pDNA) purification fail to meet theindustry’s demand for sufficient quantities. Greater volumes of bacterial lysates are a consequence of larger volumetric fermentations and traditional large-scale down-stream purification processes have some disadvantages and limitations. The market is believed to continue to expand, hence the need for efficient, cost-effective, andscalable purification processes becomes apparent. A crucial trade-off exists between pDNA yield and purity, necessitating careful consideration in chromatographic pu-rification steps. Each step enhances purity while likely sacrificing yield. In order to achieve a higher degree of pDNA yield, optimal purification entails a single chro-matographic step, specifically anion-exchange chromatography (AEX) in combina-tion with filtration. Alternatively, a two-step purification approach involving AEX followed by hydrophobic interaction chromatography (HIC) is recommended to elim-inate complementary impurities and achieve a high level of purity. Furthermore, the utilization of monolithic chromatographic supports is suggested to facilitate the sug-gested purification strategies. This is due to monoliths promoting higher binding capacities, ensuring robust and consistent results even at high flow rates.

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