Biosynthesis Of High Molecular Weight Poly(3-Hydroxybutyrate-Co-4-Hydroxybutyrate) Copolymer By Cupriavidus Sp. USMAA1020 Using 1,8-Octanediol As The Carbon Precursor

Polihidroksialkanoat (PHA) merupakan termoplastik bakteria yang terbiodegradasi secara semulajadi. Kopolimer poli(3-hidroksibutirat-ko-4-hidroksibutirat) P(3HB-ko-4HB) merupakan sejenis PHA yang dikenali dengan sifat kebioserasian yang dapat ditransformasikan sebagai produk biofarmaseutikal dan digu...

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Main Author:	Ku Abdul Rahamn, Ku Nur Elina Shaheeda
Format:	Thesis
Language:	English
Published:	2016
Subjects:	QH1 Natural history (General - Including nature conservation geographical distribution)
Online Access:	http://eprints.usm.my/32178/1/KU_NUR_ELINA_SHAHEEDA_KU_ABDUL_RAHMAN_24%28NN%29.pdf
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id	my-usm-ep.32178
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spelling	my-usm-ep.321782019-04-12T05:25:13Z Biosynthesis Of High Molecular Weight Poly(3-Hydroxybutyrate-Co-4-Hydroxybutyrate) Copolymer By Cupriavidus Sp. USMAA1020 Using 1,8-Octanediol As The Carbon Precursor 2016-09 Ku Abdul Rahamn, Ku Nur Elina Shaheeda QH1 Natural history (General - Including nature conservation, geographical distribution) Polihidroksialkanoat (PHA) merupakan termoplastik bakteria yang terbiodegradasi secara semulajadi. Kopolimer poli(3-hidroksibutirat-ko-4-hidroksibutirat) P(3HB-ko-4HB) merupakan sejenis PHA yang dikenali dengan sifat kebioserasian yang dapat ditransformasikan sebagai produk biofarmaseutikal dan digunakan dalam bidang perubatan. Berat molekul yang tinggi (>1MDa) adalah sifat yang diidamkan kerana ia berpotensi untuk pelbagai aplikasi penggunaan memandangkan 1,8-oktanadiol dapat menghasilkan 4HB monomer dengan komposisi yang tinggi tetapi mempunyai kepekatan PHA yang rendah. Kajian ini dijalankan untuk mengkaji potensi 1,8-oktanadiol untuk menghasilkan P(3HB-ko-4HB) dengan berat molekul yang tinggi serta kepekatan PHA yang lebih baik menggunakan kultur substrat campuran. Proses pengkulturan satu peringkat telah dilakukan dengan menggabungkan karbon 1,8-oktanadiol dengan asid oleik, γ-butirolakton, 1,4-butanadiol atau natrium 4-hidroksibutirat. Kesan nisbah sumber karbon kepada nitrogen (C/N) oleh 1,8-oktanadiol telah dikaji dan menunjukkan C/N=10 memberikan pertumbuhan dan kepekatan PHA yang optimum. Kajian pengkulturan substrat campuran ke atas biosintesis kopolimer menggunakan kepekatan dan substrat campuran yang berbeza melalui kajian kelalang goncangan menghasilkan 4 hingga 52 mol% komposisi 4HB monomer oleh kultur sesekelompok dan kultur suapan sesekelompok. Polyhydroxyalkanoate (PHA) is a bacterial derived thermoplastic that is naturally biodegradable. Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [P(3HB-co-4HB)] copolymer is a PHA known for its biocompatibility that can be transformed into biopharmaceutical products and be used in medical applications. High molecular weight polymer (>1 MDa) is highly desired for its many potential applications usage as 1,8-octanediol could produce high 4HB composition but low PHA concentration. This study investigates the potential of 1,8-octanediol to produce high molecular weight P(3HB-co-4HB) copolymer with improved PHA concentration using mixed substrate cultivation. One-stage cultivation process was performed using different carbon combination of 1,8-octanediol either with oleic acid, γ-butyrolactone, 1,4-butanediol or sodium 4-hydroxybutyrate. The effect of carbon to nitrogen (C/N) ratios of 1,8-octanediol was investigated and it was found that C/N=10 gave the optimum growth and PHA concentration. Biosynthesis of copolymer using different concentration of mixed-substrate by shake-flask cultivation resulted in 4 to 52 mol% 4HB monomer compositions by batch and fed-batch fermentation. 2016-09 Thesis http://eprints.usm.my/32178/ http://eprints.usm.my/32178/1/KU_NUR_ELINA_SHAHEEDA_KU_ABDUL_RAHMAN_24%28NN%29.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Sains Kajihayat (School of Biological Sciences)
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	QH1 Natural history (General - Including nature conservation geographical distribution)
spellingShingle	QH1 Natural history (General - Including nature conservation geographical distribution) Ku Abdul Rahamn, Ku Nur Elina Shaheeda Biosynthesis Of High Molecular Weight Poly(3-Hydroxybutyrate-Co-4-Hydroxybutyrate) Copolymer By Cupriavidus Sp. USMAA1020 Using 1,8-Octanediol As The Carbon Precursor
description	Polihidroksialkanoat (PHA) merupakan termoplastik bakteria yang terbiodegradasi secara semulajadi. Kopolimer poli(3-hidroksibutirat-ko-4-hidroksibutirat) P(3HB-ko-4HB) merupakan sejenis PHA yang dikenali dengan sifat kebioserasian yang dapat ditransformasikan sebagai produk biofarmaseutikal dan digunakan dalam bidang perubatan. Berat molekul yang tinggi (>1MDa) adalah sifat yang diidamkan kerana ia berpotensi untuk pelbagai aplikasi penggunaan memandangkan 1,8-oktanadiol dapat menghasilkan 4HB monomer dengan komposisi yang tinggi tetapi mempunyai kepekatan PHA yang rendah. Kajian ini dijalankan untuk mengkaji potensi 1,8-oktanadiol untuk menghasilkan P(3HB-ko-4HB) dengan berat molekul yang tinggi serta kepekatan PHA yang lebih baik menggunakan kultur substrat campuran. Proses pengkulturan satu peringkat telah dilakukan dengan menggabungkan karbon 1,8-oktanadiol dengan asid oleik, γ-butirolakton, 1,4-butanadiol atau natrium 4-hidroksibutirat. Kesan nisbah sumber karbon kepada nitrogen (C/N) oleh 1,8-oktanadiol telah dikaji dan menunjukkan C/N=10 memberikan pertumbuhan dan kepekatan PHA yang optimum. Kajian pengkulturan substrat campuran ke atas biosintesis kopolimer menggunakan kepekatan dan substrat campuran yang berbeza melalui kajian kelalang goncangan menghasilkan 4 hingga 52 mol% komposisi 4HB monomer oleh kultur sesekelompok dan kultur suapan sesekelompok. Polyhydroxyalkanoate (PHA) is a bacterial derived thermoplastic that is naturally biodegradable. Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [P(3HB-co-4HB)] copolymer is a PHA known for its biocompatibility that can be transformed into biopharmaceutical products and be used in medical applications. High molecular weight polymer (>1 MDa) is highly desired for its many potential applications usage as 1,8-octanediol could produce high 4HB composition but low PHA concentration. This study investigates the potential of 1,8-octanediol to produce high molecular weight P(3HB-co-4HB) copolymer with improved PHA concentration using mixed substrate cultivation. One-stage cultivation process was performed using different carbon combination of 1,8-octanediol either with oleic acid, γ-butyrolactone, 1,4-butanediol or sodium 4-hydroxybutyrate. The effect of carbon to nitrogen (C/N) ratios of 1,8-octanediol was investigated and it was found that C/N=10 gave the optimum growth and PHA concentration. Biosynthesis of copolymer using different concentration of mixed-substrate by shake-flask cultivation resulted in 4 to 52 mol% 4HB monomer compositions by batch and fed-batch fermentation.
format	Thesis
qualification_level	Master's degree
author	Ku Abdul Rahamn, Ku Nur Elina Shaheeda
author_facet	Ku Abdul Rahamn, Ku Nur Elina Shaheeda
author_sort	Ku Abdul Rahamn, Ku Nur Elina Shaheeda
title	Biosynthesis Of High Molecular Weight Poly(3-Hydroxybutyrate-Co-4-Hydroxybutyrate) Copolymer By Cupriavidus Sp. USMAA1020 Using 1,8-Octanediol As The Carbon Precursor
title_short	Biosynthesis Of High Molecular Weight Poly(3-Hydroxybutyrate-Co-4-Hydroxybutyrate) Copolymer By Cupriavidus Sp. USMAA1020 Using 1,8-Octanediol As The Carbon Precursor
title_full	Biosynthesis Of High Molecular Weight Poly(3-Hydroxybutyrate-Co-4-Hydroxybutyrate) Copolymer By Cupriavidus Sp. USMAA1020 Using 1,8-Octanediol As The Carbon Precursor
title_fullStr	Biosynthesis Of High Molecular Weight Poly(3-Hydroxybutyrate-Co-4-Hydroxybutyrate) Copolymer By Cupriavidus Sp. USMAA1020 Using 1,8-Octanediol As The Carbon Precursor
title_full_unstemmed	Biosynthesis Of High Molecular Weight Poly(3-Hydroxybutyrate-Co-4-Hydroxybutyrate) Copolymer By Cupriavidus Sp. USMAA1020 Using 1,8-Octanediol As The Carbon Precursor
title_sort	biosynthesis of high molecular weight poly(3-hydroxybutyrate-co-4-hydroxybutyrate) copolymer by cupriavidus sp. usmaa1020 using 1,8-octanediol as the carbon precursor
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Sains Kajihayat (School of Biological Sciences)
publishDate	2016
url	http://eprints.usm.my/32178/1/KU_NUR_ELINA_SHAHEEDA_KU_ABDUL_RAHMAN_24%28NN%29.pdf
_version_	1747820539748024320

Biosynthesis Of High Molecular Weight Poly(3-Hydroxybutyrate-Co-4-Hydroxybutyrate) Copolymer By Cupriavidus Sp. USMAA1020 Using 1,8-Octanediol As The Carbon Precursor

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