Green Synthesis Of Silver Nanoparticles From Water-Soluble Polysaccharides Of Clinacanthus Nutans Leaf: Extraction, Characterisation, Optimisation And Antibacterial Studies

C. nutans has gained much attention by researchers due to its pharmacotherapeutic properties. However, the extraction method of C. nutans leaf crude polysaccharide (CNP), CNP synthesising silver nanoparticles (AgNP) and the subsequent antibacterial properties as a DNA synthesis inhibitor, has not be...

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Main Author:	Devasvaran, Kogilavanee
Format:	Thesis
Language:	English
Published:	2023
Subjects:	SB1-1110 Plant culture
Online Access:	http://eprints.usm.my/60162/1/KOGILAVANEE%20AP%20DEVASVARAN%20-%20TESIS%20cut.pdf
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id	my-usm-ep.60162
record_format	uketd_dc
spelling	my-usm-ep.601622024-03-13T03:13:38Z Green Synthesis Of Silver Nanoparticles From Water-Soluble Polysaccharides Of Clinacanthus Nutans Leaf: Extraction, Characterisation, Optimisation And Antibacterial Studies 2023-07 Devasvaran, Kogilavanee SB1-1110 Plant culture C. nutans has gained much attention by researchers due to its pharmacotherapeutic properties. However, the extraction method of C. nutans leaf crude polysaccharide (CNP), CNP synthesising silver nanoparticles (AgNP) and the subsequent antibacterial properties as a DNA synthesis inhibitor, has not been studied. Hence, this research aims to employ a green synthetic method to produce AgNP and assess its potential application as an antibacterial agent. Five extraction methods of CNP were employed, namely hot water (HW_CNP), ultrasound-assisted (UL_CNP), freeze-thaw (FT_CNP), alkaline (ALK_CNP) and acid (ACD_CNP). All five CNP were optimised and characterised, and their compositions were analysed. Three CNP were then selected to synthesise ACD_AgNP, ALK_AgNP, and UL_AgNP, respectively, where ALK_AgNP and UL_AgNP were optimally selected based on their synthesis conditions and their toxicity in brine shrimp was quantified. The antibacterial and potential DNA synthesis inhibition mechanism of action (MOA) of ALK_AgNP was further quantified. The results of CNP showed that ACD_CNP and FT_CNP obtained the highest and lowest extraction yield at 14.85 ± 0.25% and 4.16 ± 0.13%, respectively. 2023-07 Thesis http://eprints.usm.my/60162/ http://eprints.usm.my/60162/1/KOGILAVANEE%20AP%20DEVASVARAN%20-%20TESIS%20cut.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Institut Perubatan & Pergigian Termaju
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	SB1-1110 Plant culture
spellingShingle	SB1-1110 Plant culture Devasvaran, Kogilavanee Green Synthesis Of Silver Nanoparticles From Water-Soluble Polysaccharides Of Clinacanthus Nutans Leaf: Extraction, Characterisation, Optimisation And Antibacterial Studies
description	C. nutans has gained much attention by researchers due to its pharmacotherapeutic properties. However, the extraction method of C. nutans leaf crude polysaccharide (CNP), CNP synthesising silver nanoparticles (AgNP) and the subsequent antibacterial properties as a DNA synthesis inhibitor, has not been studied. Hence, this research aims to employ a green synthetic method to produce AgNP and assess its potential application as an antibacterial agent. Five extraction methods of CNP were employed, namely hot water (HW_CNP), ultrasound-assisted (UL_CNP), freeze-thaw (FT_CNP), alkaline (ALK_CNP) and acid (ACD_CNP). All five CNP were optimised and characterised, and their compositions were analysed. Three CNP were then selected to synthesise ACD_AgNP, ALK_AgNP, and UL_AgNP, respectively, where ALK_AgNP and UL_AgNP were optimally selected based on their synthesis conditions and their toxicity in brine shrimp was quantified. The antibacterial and potential DNA synthesis inhibition mechanism of action (MOA) of ALK_AgNP was further quantified. The results of CNP showed that ACD_CNP and FT_CNP obtained the highest and lowest extraction yield at 14.85 ± 0.25% and 4.16 ± 0.13%, respectively.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Devasvaran, Kogilavanee
author_facet	Devasvaran, Kogilavanee
author_sort	Devasvaran, Kogilavanee
title	Green Synthesis Of Silver Nanoparticles From Water-Soluble Polysaccharides Of Clinacanthus Nutans Leaf: Extraction, Characterisation, Optimisation And Antibacterial Studies
title_short	Green Synthesis Of Silver Nanoparticles From Water-Soluble Polysaccharides Of Clinacanthus Nutans Leaf: Extraction, Characterisation, Optimisation And Antibacterial Studies
title_full	Green Synthesis Of Silver Nanoparticles From Water-Soluble Polysaccharides Of Clinacanthus Nutans Leaf: Extraction, Characterisation, Optimisation And Antibacterial Studies
title_fullStr	Green Synthesis Of Silver Nanoparticles From Water-Soluble Polysaccharides Of Clinacanthus Nutans Leaf: Extraction, Characterisation, Optimisation And Antibacterial Studies
title_full_unstemmed	Green Synthesis Of Silver Nanoparticles From Water-Soluble Polysaccharides Of Clinacanthus Nutans Leaf: Extraction, Characterisation, Optimisation And Antibacterial Studies
title_sort	green synthesis of silver nanoparticles from water-soluble polysaccharides of clinacanthus nutans leaf: extraction, characterisation, optimisation and antibacterial studies
granting_institution	Universiti Sains Malaysia
granting_department	Institut Perubatan & Pergigian Termaju
publishDate	2023
url	http://eprints.usm.my/60162/1/KOGILAVANEE%20AP%20DEVASVARAN%20-%20TESIS%20cut.pdf
_version_	1794024098770190336

Green Synthesis Of Silver Nanoparticles From Water-Soluble Polysaccharides Of Clinacanthus Nutans Leaf: Extraction, Characterisation, Optimisation And Antibacterial Studies

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