Synthesis of biosurfactants by bacterial cells: Heavy-metals tolerance and siderophores DOI Creative Commons
Seun Owolabi Adebajo, Paul Olusegun Bankole,

A.E. Ojo

et al.

Scientific African, Journal Year: 2023, Volume and Issue: 22, P. e01984 - e01984

Published: Nov. 1, 2023

Environment unfriendly nature of chemical surfactants and pollution the environment with heavy metals, especially from industries have become great challenges worldwide, hence need for an urgent solution. This study aimed to search novel strains exhibiting multiple industrial applications heavy-metal tolerance, siderophore biosurfactant capabilities. Soil samples were collected metal dumpsites farmland soils. Isolation, enrichment characterization bacteria carried out using biochemical molecular techniques. Bacterial isolates evaluated metals tolerance by agar-well diffusion smear methods. Siderophore test was iron (III) chloride assay employed in synthesis solvent extraction method. Results showed that prominent genus are Pseudomonas, Proteus, Staphylococcus Micrococcus species. Resistance observed be higher at lower concentrations (100 mg/L) reduced (200–600 mg/L). Six tolerated Ni 600 mg/L five bacterial resisted Pb Zn while other displayed different inhibition zones. The evaluation siderophores revealed only 5 positive. Among positive producers, Burkholderia cepacia strain HB21 gave highest biosurfactants yield (1.87 g/L 0.96 g/L) least 0.74 0.38 produced Achromobacter xylosoxidans 207-4B without agitation. These findings reveal is a metal-tolerant producing potentials may useful

Language: Английский

Innovative Synthesis and Molecular Modeling of Actinomycetes-Derived Silver Nanoparticles for Biomedical Applications. DOI

Safia Ahmed Amin,

Mohamed E. A. Dawood,

Mohamed Y. Mahmoud

et al.

Microbial Pathogenesis, Journal Year: 2024, Volume and Issue: unknown, P. 106990 - 106990

Published: Oct. 1, 2024

Language: Английский

Citations

0
The pH and Sucrose Influence Rhamnolipid Action Toward Planktonic and Biofilms of Listeria monocytogenes DOI Creative Commons
Tathiane Ferroni Passos, Márcia Nitschke

Microorganisms, Journal Year: 2024, Volume and Issue: 12(10), P. 2078 - 2078

Published: Oct. 17, 2024

Bacterial resistance and persistence in food environments are major concerns for the industry, which constantly seeks new strategies to reduce microbial contamination. Rhamnolipids (RL) biosurfactants considered sustainable green alternatives synthetics; furthermore, they have demonstrated potential controlling various foodborne pathogens. Food typically exposed diverse pH, solutes, temperatures, water activity (a

Language: Английский

Citations

0
Potential Biomedical Applications of Biosurfactants Derived from Extremophilic Bacteria: A review DOI
Amir Mohammad Bagheri, Mohammad Amin Raeisi Estabragh, Abbas Pardakhty

et al.

Biocatalysis and Agricultural Biotechnology, Journal Year: 2024, Volume and Issue: unknown, P. 103455 - 103455

Published: Dec. 1, 2024

Language: Английский

Citations

0
New Insights on Gordonia alkanivorans Strain 1B Surface-Active Biomolecules: Gordofactin Properties DOI Creative Commons
João Tavares, Susana M. Paixão, Tiago P. Silva

et al.

Molecules, Journal Year: 2024, Volume and Issue: 30(1), P. 1 - 1

Published: Dec. 24, 2024

Biosurfactants/bioemulsifiers (BSs/BEs) can be defined as surface-active biomolecules produced by microorganisms with a broad range of applications. In recent years, due to their unique properties like biodegradability, specificity, low toxicity, and relative ease preparation, these have attracted wide interest an eco-friendly alternative for several industrial sectors, escalating global microbial BS/BE market growth. Recently, Gordonia alkanivorans strain 1B, bacterium significant biotechnological potential, well known its biodesulfurizing properties, carotenoid production, catabolic range, was described producer. This study focuses on the characterization lipoglycopeptide BSs/BEs henceforth referred gordofactin, better understand potential future Strain 1B cultivated in chemostat using fructose carbon source stimulate gordofactin different purification methods were tested. The most purified sample, designated extracted after lyophilization, presented specific emulsifying activity 9.5 U/mg critical micelle concentration 13.5 mg/L. FT-IR analysis revealed presence basic hydroxyl, carboxyl, ether, amine/amide functional groups, alkyl aliphatic chains, which is consistent nature (60% lipids, 19.6% carbohydrates, 9% proteins). Gordofactin displayed remarkable stability retained across temperatures (30 °C 80 °C) pH (pH 3–12). Moreover, tolerance (EA) NaCl concentrations (1 100 g/L) demonstrated. Although great loss EA above 2.5%, could still tolerate up g/L NaCl, maintaining about 16% initial 7 days. Furthermore, exhibited growth inhibition against both Gram-positive Gram-negative bacteria, it demonstrated concentration-dependent free radical scavenging 2,2-diphenyl-1-picrylhydrazyl (IC50 ≈ 1471 mg/L). These promising features emphasize robustness conventional surfactants/emulsifiers

Language: Английский

Citations

0
Synthesis of biosurfactants by bacterial cells: Heavy-metals tolerance and siderophores DOI Creative Commons
Seun Owolabi Adebajo, Paul Olusegun Bankole,

A.E. Ojo

et al.

Scientific African, Journal Year: 2023, Volume and Issue: 22, P. e01984 - e01984

Published: Nov. 1, 2023

Environment unfriendly nature of chemical surfactants and pollution the environment with heavy metals, especially from industries have become great challenges worldwide, hence need for an urgent solution. This study aimed to search novel strains exhibiting multiple industrial applications heavy-metal tolerance, siderophore biosurfactant capabilities. Soil samples were collected metal dumpsites farmland soils. Isolation, enrichment characterization bacteria carried out using biochemical molecular techniques. Bacterial isolates evaluated metals tolerance by agar-well diffusion smear methods. Siderophore test was iron (III) chloride assay employed in synthesis solvent extraction method. Results showed that prominent genus are Pseudomonas, Proteus, Staphylococcus Micrococcus species. Resistance observed be higher at lower concentrations (100 mg/L) reduced (200–600 mg/L). Six tolerated Ni 600 mg/L five bacterial resisted Pb Zn while other displayed different inhibition zones. The evaluation siderophores revealed only 5 positive. Among positive producers, Burkholderia cepacia strain HB21 gave highest biosurfactants yield (1.87 g/L 0.96 g/L) least 0.74 0.38 produced Achromobacter xylosoxidans 207-4B without agitation. These findings reveal is a metal-tolerant producing potentials may useful

Language: Английский

Citations

1