A bi-layer electrospun nanofiber membrane for plasmid DNA recovery from fermentation broths

Tiago R. Correia, Bernardo P. Antunes, Pedro H. Castilho, José C. Nunes, Maria T. Pessoa De Amorim, Isabel C. Escobar, João A. Queiroz, Ilídio J. Correia, António M. Morão

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

The demanding ever-increasing quantities of highly purified biomolecules by bio-industries, has triggered the development of new, more efficient, purification techniques. The application of membrane-based technologies has become very attractive in this field, for their high throughput capability, simplicity of operation and scale-up. Herein we report the production of a bi-layer membrane by electrospinning (ES), in which a support of poly ε-caprolactone nanofibers was coated with a polyethylene oxide/sodium alginate layer, and subsequently cross-linked with calcium chloride. The membranes were characterized by SEM, ATR-FTIR, contact angle measurements, and were applied in the recovery process of a plasmid. The results show that membranes retained the suspended solids while allowing the permeation of plasmid DNA, with high recovery yields and improved RNA retention. Moreover, they also showed a very low fouling tendency. To the best of our knowledge it is the first time that ES membranes are applied in this type of bioprocess.

Original languageEnglish
Pages (from-to)20-25
Number of pages6
JournalSeparation and Purification Technology
Volume112
DOIs
StatePublished - 2013

Bibliographical note

Funding Information:
This work was supported by the Portuguese Foundation for Science and Technology (FCT) , ( PTDC/EME-TME/103375/2008 and PTDC/EBB-BIO/114320/2009 ). To Ricardo Fradique for helping in the production of the graphical abstract.

Funding

This work was supported by the Portuguese Foundation for Science and Technology (FCT) , ( PTDC/EME-TME/103375/2008 and PTDC/EBB-BIO/114320/2009 ). To Ricardo Fradique for helping in the production of the graphical abstract.

FundersFunder number
Fundação para a Ciência e Tecnologia I.P.PTDC/EME-TME/103375/2008, PTDC/EBB-BIO/114320/2009

    Keywords

    • Bi-layer membrane
    • DNA
    • Electrospinning
    • Lysate
    • Microfiltration
    • Plasmid

    ASJC Scopus subject areas

    • Analytical Chemistry
    • Filtration and Separation

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