Amharc Foirne: Effect of different operating modes and biomass concentrations on the recovery of recombinant hepatitis B core antigen from thermal-treated unclarified Escherichia coli feedstock

Effect of different operating modes and biomass concentrations on the recovery of recombinant hepatitis B core antigen from thermal-treated unclarified Escherichia coli feedstock

Expanded bed adsorption chromatography (EBAC) is a single pass operation that has been used as primary capture step in various protein purifications. The most common problem in EBAC is often associated with successful formation of a stable fluidized bed during the absorption stage, which is critical...

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Main Authors:	Ng, Michelle Yeen Tan, Tan, Wen Siang, Abdullah, Norhafizah, Ling, Tau Chuan, Tey , Beng Ti
Formáid:	Article
Teanga:	English English
Foilsithe:	Elsevier B.V. 2008
Ábhair:	Hepatitis B - Diagnosis Escherichia coli Biomass
Rochtain Ar Líne:	http://psasir.upm.edu.my/id/eprint/14228/1/Effect%20of%20different%20operating%20modes%20and%20biomass%20concentrations%20on%20the%20recovery%20of%20recombinant%20hepatitis%20B%20core%20antigen%20from%20thermal.pdf
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id	oai:psasir.upm.edu.my:14228
record_format	eprints
spelling	oai:psasir.upm.edu.my:14228 http://psasir.upm.edu.my/id/eprint/14228/ Effect of different operating modes and biomass concentrations on the recovery of recombinant hepatitis B core antigen from thermal-treated unclarified Escherichia coli feedstock Ng, Michelle Yeen Tan Tan, Wen Siang Abdullah, Norhafizah Ling, Tau Chuan Tey , Beng Ti Expanded bed adsorption chromatography (EBAC) is a single pass operation that has been used as primary capture step in various protein purifications. The most common problem in EBAC is often associated with successful formation of a stable fluidized bed during the absorption stage, which is critically dependent on parameters such as liquid velocity, bed height, particle (adsorbent) size and density as well as design of column and type of flow distributor. In this study, residence time distribution (RTD) test using acetone as non-binding tracer acetone was performed to evaluate liquid dispersion characteristics of the EBAC system. A high B(o) number was obtained indicating the liquid dispersion in the system employed is very minimal and the liquid flow within the bed was close to plug flow, which mimics a packed bed chromatography system. Evaluation on the effect of flow velocities and bed height on the performance of Streamline DEAE using feedstock containing heat-treated crude Escherichia coli homogenate of different biomass concentrations was carried out in this study. The advantages and disadvantages as well as the problems encountered during recovery of HBcAg with aforementioned parameters are also discussed in this paper. Elsevier B.V. 2008 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/14228/1/Effect%20of%20different%20operating%20modes%20and%20biomass%20concentrations%20on%20the%20recovery%20of%20recombinant%20hepatitis%20B%20core%20antigen%20from%20thermal.pdf Ng, Michelle Yeen Tan and Tan, Wen Siang and Abdullah, Norhafizah and Ling, Tau Chuan and Tey , Beng Ti (2008) Effect of different operating modes and biomass concentrations on the recovery of recombinant hepatitis B core antigen from thermal-treated unclarified Escherichia coli feedstock. Journal of Biotechnology, 138 (3-4). pp. 74-79. ISSN 0168-1656 Hepatitis B - Diagnosis Escherichia coli Biomass English
institution	UPM IR
collection	UPM IR
language	English English
topic	Hepatitis B - Diagnosis Escherichia coli Biomass
spellingShingle	Hepatitis B - Diagnosis Escherichia coli Biomass Ng, Michelle Yeen Tan Tan, Wen Siang Abdullah, Norhafizah Ling, Tau Chuan Tey , Beng Ti Effect of different operating modes and biomass concentrations on the recovery of recombinant hepatitis B core antigen from thermal-treated unclarified Escherichia coli feedstock
description	Expanded bed adsorption chromatography (EBAC) is a single pass operation that has been used as primary capture step in various protein purifications. The most common problem in EBAC is often associated with successful formation of a stable fluidized bed during the absorption stage, which is critically dependent on parameters such as liquid velocity, bed height, particle (adsorbent) size and density as well as design of column and type of flow distributor. In this study, residence time distribution (RTD) test using acetone as non-binding tracer acetone was performed to evaluate liquid dispersion characteristics of the EBAC system. A high B(o) number was obtained indicating the liquid dispersion in the system employed is very minimal and the liquid flow within the bed was close to plug flow, which mimics a packed bed chromatography system. Evaluation on the effect of flow velocities and bed height on the performance of Streamline DEAE using feedstock containing heat-treated crude Escherichia coli homogenate of different biomass concentrations was carried out in this study. The advantages and disadvantages as well as the problems encountered during recovery of HBcAg with aforementioned parameters are also discussed in this paper.
format	Article
author	Ng, Michelle Yeen Tan Tan, Wen Siang Abdullah, Norhafizah Ling, Tau Chuan Tey , Beng Ti
author_facet	Ng, Michelle Yeen Tan Tan, Wen Siang Abdullah, Norhafizah Ling, Tau Chuan Tey , Beng Ti
author_sort	Ng, Michelle Yeen Tan
title	Effect of different operating modes and biomass concentrations on the recovery of recombinant hepatitis B core antigen from thermal-treated unclarified Escherichia coli feedstock
title_short	Effect of different operating modes and biomass concentrations on the recovery of recombinant hepatitis B core antigen from thermal-treated unclarified Escherichia coli feedstock
title_full	Effect of different operating modes and biomass concentrations on the recovery of recombinant hepatitis B core antigen from thermal-treated unclarified Escherichia coli feedstock
title_fullStr	Effect of different operating modes and biomass concentrations on the recovery of recombinant hepatitis B core antigen from thermal-treated unclarified Escherichia coli feedstock
title_full_unstemmed	Effect of different operating modes and biomass concentrations on the recovery of recombinant hepatitis B core antigen from thermal-treated unclarified Escherichia coli feedstock
title_sort	effect of different operating modes and biomass concentrations on the recovery of recombinant hepatitis b core antigen from thermal-treated unclarified escherichia coli feedstock
publisher	Elsevier B.V.
publishDate	2008
url	http://psasir.upm.edu.my/id/eprint/14228/1/Effect%20of%20different%20operating%20modes%20and%20biomass%20concentrations%20on%20the%20recovery%20of%20recombinant%20hepatitis%20B%20core%20antigen%20from%20thermal.pdf
_version_	1782718681376096256
score	12.933938

Effect of different operating modes and biomass concentrations on the recovery of recombinant hepatitis B core antigen from thermal-treated unclarified Escherichia coli feedstock

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