Screening for antimicrobial activities in soil fungal isolated from Kubah National Park

A study was carried out on soil samples collected from Kubah National Park in order to discover novel antibiotics produced by soil microbes. Twenty one samples of soil were analyzed for antimicrobial producing microbes. The test bacteria used in this study were Escherichia coli, Listeria monocytogen...

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Main Author: Yue, Keong Choon
Format: Final Year Project Report / IMRAD
Language:English
Published: Universiti Malaysia Sarawak, UNIMAS 2012
Subjects:
Online Access:http://ir.unimas.my/id/eprint/6253/
http://ir.unimas.my/id/eprint/6253/4/Keong%20Choon%28fulltext%29.pdf
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author Yue, Keong Choon
author_facet Yue, Keong Choon
author_sort Yue, Keong Choon
building UNIMAS Institutional Repository
collection Online Access
description A study was carried out on soil samples collected from Kubah National Park in order to discover novel antibiotics produced by soil microbes. Twenty one samples of soil were analyzed for antimicrobial producing microbes. The test bacteria used in this study were Escherichia coli, Listeria monocytogenes, Salmonella enteritidis and Klebsiella pneumoniae. Six fungal isolates (P550 AI a iv, P550 AI b iv, P550 AI c iii, P550 AI d iv, P550 AII a iv, P550 AII b iv) showed strong antibacterial activity against different strains of test bacteria during antibiotic activity screening using agar overlay techniques in the preliminary screening followed by secondary screening. A total of 3 fungal isolates (P550AIa, P550AIb, P550AIc) were selected to undergo antibiotics susceptibility testing and characterization. These 3 fungal isolates showed MIC value and produced inhibition zone compared to the positive control (5× dilutions of penicillin-streptomycin solution). The 3 fungal isolates were subjected to thin layer chromatography and bioautography to characterize their antimicrobial active compound. Three fungal isolates were subjected to Polymerase Chain Reaction (PCR) and gel electrophoresis, however only P550AIb showed band on gel electrophoresis. Upon identification, P550AIb was identified as Penicillium verruculosum after being sequenced. All the fungal isolates could be used to produce antimicrobial compound.
first_indexed 2025-11-15T06:14:49Z
format Final Year Project Report / IMRAD
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institution Universiti Malaysia Sarawak
institution_category Local University
language English
last_indexed 2025-11-15T06:14:49Z
publishDate 2012
publisher Universiti Malaysia Sarawak, UNIMAS
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spelling unimas-62532024-03-14T08:11:58Z http://ir.unimas.my/id/eprint/6253/ Screening for antimicrobial activities in soil fungal isolated from Kubah National Park Yue, Keong Choon GE Environmental Sciences Q Science (General) QR Microbiology A study was carried out on soil samples collected from Kubah National Park in order to discover novel antibiotics produced by soil microbes. Twenty one samples of soil were analyzed for antimicrobial producing microbes. The test bacteria used in this study were Escherichia coli, Listeria monocytogenes, Salmonella enteritidis and Klebsiella pneumoniae. Six fungal isolates (P550 AI a iv, P550 AI b iv, P550 AI c iii, P550 AI d iv, P550 AII a iv, P550 AII b iv) showed strong antibacterial activity against different strains of test bacteria during antibiotic activity screening using agar overlay techniques in the preliminary screening followed by secondary screening. A total of 3 fungal isolates (P550AIa, P550AIb, P550AIc) were selected to undergo antibiotics susceptibility testing and characterization. These 3 fungal isolates showed MIC value and produced inhibition zone compared to the positive control (5× dilutions of penicillin-streptomycin solution). The 3 fungal isolates were subjected to thin layer chromatography and bioautography to characterize their antimicrobial active compound. Three fungal isolates were subjected to Polymerase Chain Reaction (PCR) and gel electrophoresis, however only P550AIb showed band on gel electrophoresis. Upon identification, P550AIb was identified as Penicillium verruculosum after being sequenced. All the fungal isolates could be used to produce antimicrobial compound. Universiti Malaysia Sarawak, UNIMAS 2012 Final Year Project Report / IMRAD NonPeerReviewed text en http://ir.unimas.my/id/eprint/6253/4/Keong%20Choon%28fulltext%29.pdf Yue, Keong Choon (2012) Screening for antimicrobial activities in soil fungal isolated from Kubah National Park. [Final Year Project Report / IMRAD] (Unpublished)
spellingShingle GE Environmental Sciences
Q Science (General)
QR Microbiology
Yue, Keong Choon
Screening for antimicrobial activities in soil fungal isolated from Kubah National Park
title Screening for antimicrobial activities in soil fungal isolated from Kubah National Park
title_full Screening for antimicrobial activities in soil fungal isolated from Kubah National Park
title_fullStr Screening for antimicrobial activities in soil fungal isolated from Kubah National Park
title_full_unstemmed Screening for antimicrobial activities in soil fungal isolated from Kubah National Park
title_short Screening for antimicrobial activities in soil fungal isolated from Kubah National Park
title_sort screening for antimicrobial activities in soil fungal isolated from kubah national park
topic GE Environmental Sciences
Q Science (General)
QR Microbiology
url http://ir.unimas.my/id/eprint/6253/
http://ir.unimas.my/id/eprint/6253/4/Keong%20Choon%28fulltext%29.pdf