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 language | English |
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Pages (from-to) | 20-25 |
Number of pages | 6 |
Journal | Separation and Purification Technology |
Volume | 112 |
DOIs | |
State | Published - 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.
Funders | Funder number |
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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