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https://hdl.handle.net/2440/46445
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Type: | Journal article |
Title: | Application of response surface methodology to the modeling of α-amylase purification by aqueous two-phase systems |
Other Titles: | Application of response surface methodology to the modeling of alpha-amylase purification by aqueous two-phase systems |
Author: | Zhi, W. Song, J. Ouyang, F. Bi, J. |
Citation: | Journal of Biotechnology, 2005; 118(2):157-165 |
Publisher: | Elsevier Science BV |
Issue Date: | 2005 |
ISSN: | 0168-1656 1873-4863 |
Abstract: | Mathematical models concerning the purification of greek small letter alpha-amylase from the cultivation supernatant of Bacillus subtilis in a polyethylene glycol–citrate aqueous two-phase system (ATP) are established with response surface methodology. The PEG3350, citrate and sodium chloride concentrations were selected as variables to evaluate the purification impact factors in aqueous two-phase system, including partition coefficients of greek small letter alpha-amylase, total protein, purification factor and greek small letter alpha-amylase yield. An experimental space with two-fold purification and over 90% yield of greek small letter alpha-amylase is achieved through the optimized condition basing on the model. Two systems with low viscosity within said space were further selected to perform greek small letter alpha-amylase purification and the experimental results coincide well with the calculation of the models, which indicates that the model provides a promising tool for experimental design of protein purification by aqueous two-phase system. |
Keywords: | alpha-Amylase Aqueous two-phase systems Purification Response surface methodology |
DOI: | 10.1016/j.jbiotec.2005.03.017 |
Description (link): | http://www.elsevier.com/wps/find/journaldescription.cws_home/505515/description#description |
Published version: | http://dx.doi.org/10.1016/j.jbiotec.2005.03.017 |
Appears in Collections: | Aurora harvest 6 Chemical Engineering publications |
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