Rohaida, Che Man and Ahmad Fauzi, Ismail and Nazlee Faisal, Ghazali and Siti Fatimah Zaharah, Mohd Fuzi and Rosli, Md. Illias (2015) Effects of the Immobilization of Recombinant Escherichia Coli on Cyclodextrin Glucanotransferase (CGTase) Excretion and Cell Viability. Biochemical Engineering Journal, 98. pp. 91-98. ISSN 1369-703X. (Published)
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Abstract
The excretion of recombinant enzymes is a preferred approach for protein expression because of the associated high level of expression, low level of proteolysis, ease of purification and more favorable folding environment. However, cell lysis is one of the major drawbacks in the excretion of enzymes when using Escherichia coli as a host. In this study, the effects of different polymer of hollow fiber membrane and culture conditions on the enzyme excretion, cell lysis and plasmid stability of immobilized E. coli were investigated. The cells immobilized on a hollow fiber membrane composed of a polyvinylidene fluoride (PVDF) polymer exhibited a 2–4-fold increase in CGTase excretion, over a 100% increase in plasmid stability and 28-60% reduction in cell lysis compared with free cells. Hence, the immobilization of E. coli using a hollow fiber membrane was demonstrated to increase enzyme excretion and cell stability.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Immobilized cells; Free cells; Enzyme activity; Cell lysis; Adsorption; Hollow fibers |
| Subjects: | T Technology > TP Chemical technology |
| Faculty/Division: | Faculty of Chemical & Natural Resources Engineering |
| Depositing User: | Mrs. Neng Sury Sulaiman |
| Date Deposited: | 02 Jul 2015 07:21 |
| Last Modified: | 30 Oct 2017 01:58 |
| URI: | http://umpir.ump.edu.my/id/eprint/9404 |
| Download Statistic: | View Download Statistics |
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