Cell rupture of recombinant escherichia coli using high pressure homogenizer

Ahmad Raus, Raha and Mel, Maizirwan and Mohd-Abdullah, Siti Norhana and Yusoff, Khatijah (2009) Cell rupture of recombinant escherichia coli using high pressure homogenizer. In: 3rd International Conference on Chemical and Bioprocess Engineering, 12-14 August 2009., Sabah.

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Abstract

Cell rupture is one of the earlier steps in downstream processing which are required for the recovery of biological products that are located inside cells. Cells could be disrupted either by using chemicals or mechanical method. In this study, cell rupture was carried out by mechanical force using high pressure homogenizer (HPH). The aim of this study is to identify optimal conditions of HPH to disrupt the cell wall of recombinant Escherichia coli harboring nucleocapsid (NP) gene of Newcastle disease virus (NDV). The optimized conditions were achieved by manipulating the independent variables of HPH such as pressure, pump speed and number of cycles through an optimization process. The efficiency of the cell disruption was determined by estimating the percentage of cell rupture as well as the amount of NP protein released from the cell lysis. Through the means plot analysis of Minitab Software (Version 14.12), pressure was recognized as the main factor for achieving the highest cell rupture and the release of NP protein. The optimized conditions for obtaining the highest NP protein yield were by operating three cycles of cell rupture, homogenizer pressure of 800 bars and pump speed of 7 psi.

Item Type:	Conference or Workshop Item (Full Paper)
Additional Information:	3911/29286
Uncontrolled Keywords:	Cell rupture, High pressure homogenizer, Nucleocapsid, Newcastle disease virus
Subjects:	Q Science > Q Science (General) Q Science > QR Microbiology > QR355 Virology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User:	Dr Raha Ahmad Raus
Date Deposited:	24 Apr 2013 16:00
Last Modified:	24 Apr 2013 16:00
URI:	http://irep.iium.edu.my/id/eprint/29286

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