Biosynthesis And Characterization Of Novel Polyhydroxyalkanoate By Cupriavidus Necator PHB-4 Transformant Harboring PHA Synthase Gene Of Chromobacterium SP. USM2

Ooi , Tin Fong (2011) Biosynthesis And Characterization Of Novel Polyhydroxyalkanoate By Cupriavidus Necator PHB-4 Transformant Harboring PHA Synthase Gene Of Chromobacterium SP. USM2. Masters thesis, Universiti Sains Malaysia.

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Abstract

The incorporation of a newly identified 3-hydroxy-4-methylvalerate (3H4MV) monomer into the backbone of polyhydroxyalkanoate (PHA) is thought to improve the properties of the resulting polymer. In this study, a transformant of C. necator PHB¯ 4 harboring the PHA synthase gene of Chromobacterium sp. USM2 [C. necator PHB¯4 (phaCCs)] was evaluated for its ability to synthesize novel short-chain and medium-chain-length (SCL-MCL) PHA containing 3H4MV. Fructose or crude palm kernel oil (CPKO) was used as main carbon source together with isocaproic acid (4MV) as precursor to produce the excellent SCL-MCL PHA. 4MV concentration and its feeding time had been identified as important parameters affecting PHA content and monomer composition of the resulting polymer.

Item Type:	Thesis (Masters)
Subjects:	Q Science > QH Natural history > QH1 Natural history (General - Including nature conservation, geographical distribution)
Divisions:	Pusat Pengajian Sains Kajihayat (School of Biological Sciences) > Thesis
Depositing User:	ASM Ab Shukor Mustapa
Date Deposited:	04 Oct 2018 01:53
Last Modified:	12 Apr 2019 05:26
URI:	http://eprints.usm.my/id/eprint/42274

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