Multi-cycle recovery of Lactoferrin and Lactoperoxidase from crude whey using fimbriated high-capacity magnetic cation exchangers and a novel 'roto stator' High Gradient Magnetic Separator.pdf (567.29 kB)
Multi-cycle recovery of lactoferrin and lactoperoxidase from crude whey using fimbriated high-capacity magnetic cation exchangers and a novel "rotor-stator" high-gradient magnetic separator
journal contribution
posted on 2013-03-25, 16:00 authored by Geoffrey N. Brown, Christine Muller, Eirini Theodosiou, Owen R.T. Thomas, Matthias FranzrebCerium (IV) initiated "graft-from" polymerization reactions were employed to convert M-PVA magnetic particles into polyacrylic acid-fimbriated magnetic cation exchange supports displaying ultra-high binding capacity for basic target proteins. The modifications, which were performed at 25mg and 2.5g scales, delivered maximum binding capacities (Q) for hen egg white lysozyme in excess of 320mgg, combined with sub-micromolar dissociation constants (0.45-0.69μm) and "tightness of binding" values greater than 49Lg. Two batches of polyacrylic acid-fimbriated magnetic cation exchangers were combined to form a 5g pooled batch exhibiting Q values for lysozyme, lactoferrin, and lactoperoxidase of 404, 585, and 685mgg, respectively. These magnetic cation exchangers were subsequently employed together with a newly designed "rotor-stator" type HGMF rig, in five sequential cycles of recovery of lactoferrin and lactoperoxidase from 2L batches of a crude sweet bovine whey feedstock. Lactoferrin purification performance was observed to remain relatively constant from one HGMF cycle to the next over the five operating cycles, with yields between 40% and 49% combined with purification and concentration factors of 37- to 46-fold and 1.3- to 1.6-fold, respectively. The far superior multi-cycle HGMF performance seen here compared to that observed in our earlier studies can be directly attributed to the combined use of improved high capacity adsorbents and superior particle resuspension afforded by the new "rotor-stator" HGMS design. © 2013 Wiley Periodicals, Inc.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Citation
BROWN, G.N. ... et al, 2013. Multi-cycle recovery of lactoferrin and lactoperoxidase from crude whey using fimbriated high-capacity magnetic cation exchangers and a novel "rotor-stator" high-gradient magnetic separator. Biotechnology and Bioengineering, 110 (6), pp. 1714–1725.Publisher
© John Wiley & Sons, Inc.Version
- AM (Accepted Manuscript)
Publication date
2013Notes
This is the peer reviewed version of the following article: BROWN, G.N. ... et al, 2013. Multi-cycle recovery of lactoferrin and lactoperoxidase from crude whey using fimbriated high-capacity magnetic cation exchangers and a novel "rotor-stator" high-gradient magnetic separator. Biotechnology and Bioengineering, 110 (6), pp. 1714–1725, which has been published in final form at http://dx.doi.org/10.1002/bit.24842. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.ISSN
0006-3592eISSN
1097-0290Publisher version
Language
- en