Characterization of Biosurfactants Produced by Bacillus Subtilis using Fresh and Waste Cooking Oil Enriched Medium

This study aims to compare and analyze the chemical structures of bacterial biosurfactants produced by an indigenous Bacillus subtillis strain cultured in minimal salt medium (MSM) enriched with fresh cooking oil and used cooking oils that are cheaper and easy to obtained in huge quantities. Optimiz...

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Bibliographic Details
Published inJournal of Asian scientific research (Online) Vol. 10; no. 3; pp. 156 - 164
Main Authors Nur Afini Binti Wan Adlin, Wan, Jong Yi Mian, Vivien, Chung Huap, Ang, Lee, Wen-Chien
Format Journal Article
LanguageEnglish
Published Karachi Asian Economic and Social Society 2020
Subjects
Bacillus
Bioreactors
Biosurfactants
Chemical compounds
Cooking
Cooking oils
Enrichment
Fermentation
Fourier transforms
Infrared spectroscopy
NMR
Nuclear magnetic resonance
Optimization
pH effects
Refuse as fuel
Surfactants
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Summary:This study aims to compare and analyze the chemical structures of bacterial biosurfactants produced by an indigenous Bacillus subtillis strain cultured in minimal salt medium (MSM) enriched with fresh cooking oil and used cooking oils that are cheaper and easy to obtained in huge quantities. Optimization of biosurfactants was successfully conducted in two MSMs enriched with 2% (v/v) fresh cooking oil and 2% (v/v) waste cooking oil respectively. The initial pH of growth medium was fixed at pH 7.64 and the whole fermentation process was maintained in a constant temperature of 30 ?C. Chemical structures analysis of biosurfactants produced at 1L scale in bioreactor were conducted using spectroscopic methods such as Nuclear Magnetic Resonance (NMR) and Fourier-Transform Infrared spectroscopy (FTIR). The chemical compound isolated from the biosurfactant produced from the waste cooking oil was pentyl 2-ureidobut-3-enoate (1) while (1-hydroxyethyl)amino)methyl heptanoate (2) was isolated from the biosurfactant produced from fresh cooking oil. This study demonstrated the ability of Bacillus subtilis to produce a low-cost biosurfactant characterized as lipopeptide.
ISSN:2226-5724
2223-1331
DOI:10.18488/journal.2.2020.103.156.164