Impact of cultivation conditions and nitrogen source on Bacillus velezensis AG growth and production of fengycin and surfactin

The occurrence of basal stem rot (BSR) in oil palms, identified to be predominantly caused by Ganoderma boninense, is one of the most destructive diseases plaguing the oil palm industry. Biological control agents (BCA) such as Bacillus velezensis (B. velezensis) capable of producing the cyclic lipop...

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Main Author: Neo, Samuel Zhan Yuan
Other Authors: Ng Wun Jern
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2020
Subjects:
Online Access:https://hdl.handle.net/10356/145221
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1452212020-12-15T06:08:17Z Impact of cultivation conditions and nitrogen source on Bacillus velezensis AG growth and production of fengycin and surfactin Neo, Samuel Zhan Yuan Ng Wun Jern School of Civil and Environmental Engineering WJNg@ntu.edu.sg Engineering::Environmental engineering The occurrence of basal stem rot (BSR) in oil palms, identified to be predominantly caused by Ganoderma boninense, is one of the most destructive diseases plaguing the oil palm industry. Biological control agents (BCA) such as Bacillus velezensis (B. velezensis) capable of producing the cyclic lipopeptide (CLP) fengycin and surfactin, has been put forth as more effective and environmentally friendlier alternatives to currently employed strategies for BSR control. While there have been multiple studies conducted on the viability of B. velezensis as a biocontrol agent, studies concerning its growth and CLP production are lacking. In this study, the effects of varying cultivation conditions on the growth of B. velezensis as well as its fengycin and surfactin production was investigated. To achieve this, the impacts of various growth conditions such as the molar ratio of carbon to nitrogen (C:N) , type of carbon and nitrogen sources and initial inoculating pH were studied. Results attained from this study aims to identify the optimal conditions for B. velezensis growth and CLP production, so as to give an insight on its viability as a BCA for BSR control in an agricultural setting. Bachelor of Engineering (Environmental Engineering) 2020-12-15T06:05:34Z 2020-12-15T06:05:34Z 2020 Final Year Project (FYP) https://hdl.handle.net/10356/145221 en EN-64 application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Environmental engineering
spellingShingle Engineering::Environmental engineering
Neo, Samuel Zhan Yuan
Impact of cultivation conditions and nitrogen source on Bacillus velezensis AG growth and production of fengycin and surfactin
description The occurrence of basal stem rot (BSR) in oil palms, identified to be predominantly caused by Ganoderma boninense, is one of the most destructive diseases plaguing the oil palm industry. Biological control agents (BCA) such as Bacillus velezensis (B. velezensis) capable of producing the cyclic lipopeptide (CLP) fengycin and surfactin, has been put forth as more effective and environmentally friendlier alternatives to currently employed strategies for BSR control. While there have been multiple studies conducted on the viability of B. velezensis as a biocontrol agent, studies concerning its growth and CLP production are lacking. In this study, the effects of varying cultivation conditions on the growth of B. velezensis as well as its fengycin and surfactin production was investigated. To achieve this, the impacts of various growth conditions such as the molar ratio of carbon to nitrogen (C:N) , type of carbon and nitrogen sources and initial inoculating pH were studied. Results attained from this study aims to identify the optimal conditions for B. velezensis growth and CLP production, so as to give an insight on its viability as a BCA for BSR control in an agricultural setting.
author2 Ng Wun Jern
author_facet Ng Wun Jern
Neo, Samuel Zhan Yuan
format Final Year Project
author Neo, Samuel Zhan Yuan
author_sort Neo, Samuel Zhan Yuan
title Impact of cultivation conditions and nitrogen source on Bacillus velezensis AG growth and production of fengycin and surfactin
title_short Impact of cultivation conditions and nitrogen source on Bacillus velezensis AG growth and production of fengycin and surfactin
title_full Impact of cultivation conditions and nitrogen source on Bacillus velezensis AG growth and production of fengycin and surfactin
title_fullStr Impact of cultivation conditions and nitrogen source on Bacillus velezensis AG growth and production of fengycin and surfactin
title_full_unstemmed Impact of cultivation conditions and nitrogen source on Bacillus velezensis AG growth and production of fengycin and surfactin
title_sort impact of cultivation conditions and nitrogen source on bacillus velezensis ag growth and production of fengycin and surfactin
publisher Nanyang Technological University
publishDate 2020
url https://hdl.handle.net/10356/145221
_version_ 1688665450801528832