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Biosurfactant Production by Bacillus salmalaya for Lubricating Oil Solubilization and Biodegradation.

Dadrasnia A, Ismail S - Int J Environ Res Public Health (2015)

Bottom Line: The biosurfactant exhibited a high emulsification index and a positive result in the drop collapse test, with the results demonstrating the wetting activity of the biosurfactant and its potential to produce surface-active molecules.Furthermore, the biosurfactant demonstrated high stability at different ranges of salinity, pH, and temperature.Overall, the results indicated the potential use of B. salmalaya 139SI in environmental remediation processes.

View Article: PubMed Central - PubMed

Affiliation: Department of Biohealth Science, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia. are.dadrasnia@gmail.com.

ABSTRACT
This study investigated the capability of a biosurfactant produced by a novel strain of Bacillus salmalaya to enhance the biodegradation rates and bioavailability of organic contaminants. The biosurfactant produced by cultured strain 139SI showed high physicochemical properties and surface activity in the selected medium. The biosurfactant exhibited a high emulsification index and a positive result in the drop collapse test, with the results demonstrating the wetting activity of the biosurfactant and its potential to produce surface-active molecules. Strain 139SI can significantly reduce the surface tension (ST) from 70.5 to 27 mN/m, with a critical micelle concentration of 0.4%. Moreover, lubricating oil at 2% (v/v) was degraded on Day 20 (71.5). Furthermore, the biosurfactant demonstrated high stability at different ranges of salinity, pH, and temperature. Overall, the results indicated the potential use of B. salmalaya 139SI in environmental remediation processes.

No MeSH data available.


Related in: MedlinePlus

Fourier transform infrared spectra (FTIR) of the biosurfactant produced by Bacillus salmalaya.
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ijerph-12-09848-f002: Fourier transform infrared spectra (FTIR) of the biosurfactant produced by Bacillus salmalaya.

Mentions: As a result of C–H stretching vibrations, a broad absorbance peak with variable wave numbers was observed (Figure 2). This is typical of carbon compounds containing amino groups. The sharp absorbance peaks at 1041 and 1450 cm−1 are indicative of aliphatic chains (–CH3 and –CH2–), and these peaks reflect the presence of alkyl chains in a compound. The peaks at approximately 3269 cm−1 indicate the C–H bonds of –CH2 groups. The strong band observed at 1619.31 cm−1 is attributed to a carbonyl group; the presence of C=O bonds causing C=O stretching vibrations, which leads to absorbance peaks in these regions. The FTIR spectrum suggests the production of a lipopeptide biosurfactant.


Biosurfactant Production by Bacillus salmalaya for Lubricating Oil Solubilization and Biodegradation.

Dadrasnia A, Ismail S - Int J Environ Res Public Health (2015)

Fourier transform infrared spectra (FTIR) of the biosurfactant produced by Bacillus salmalaya.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4555315&req=5

ijerph-12-09848-f002: Fourier transform infrared spectra (FTIR) of the biosurfactant produced by Bacillus salmalaya.
Mentions: As a result of C–H stretching vibrations, a broad absorbance peak with variable wave numbers was observed (Figure 2). This is typical of carbon compounds containing amino groups. The sharp absorbance peaks at 1041 and 1450 cm−1 are indicative of aliphatic chains (–CH3 and –CH2–), and these peaks reflect the presence of alkyl chains in a compound. The peaks at approximately 3269 cm−1 indicate the C–H bonds of –CH2 groups. The strong band observed at 1619.31 cm−1 is attributed to a carbonyl group; the presence of C=O bonds causing C=O stretching vibrations, which leads to absorbance peaks in these regions. The FTIR spectrum suggests the production of a lipopeptide biosurfactant.

Bottom Line: The biosurfactant exhibited a high emulsification index and a positive result in the drop collapse test, with the results demonstrating the wetting activity of the biosurfactant and its potential to produce surface-active molecules.Furthermore, the biosurfactant demonstrated high stability at different ranges of salinity, pH, and temperature.Overall, the results indicated the potential use of B. salmalaya 139SI in environmental remediation processes.

View Article: PubMed Central - PubMed

Affiliation: Department of Biohealth Science, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia. are.dadrasnia@gmail.com.

ABSTRACT
This study investigated the capability of a biosurfactant produced by a novel strain of Bacillus salmalaya to enhance the biodegradation rates and bioavailability of organic contaminants. The biosurfactant produced by cultured strain 139SI showed high physicochemical properties and surface activity in the selected medium. The biosurfactant exhibited a high emulsification index and a positive result in the drop collapse test, with the results demonstrating the wetting activity of the biosurfactant and its potential to produce surface-active molecules. Strain 139SI can significantly reduce the surface tension (ST) from 70.5 to 27 mN/m, with a critical micelle concentration of 0.4%. Moreover, lubricating oil at 2% (v/v) was degraded on Day 20 (71.5). Furthermore, the biosurfactant demonstrated high stability at different ranges of salinity, pH, and temperature. Overall, the results indicated the potential use of B. salmalaya 139SI in environmental remediation processes.

No MeSH data available.


Related in: MedlinePlus