Biosurfactants: Promising Biomolecules for Environmental Cleanup

Rawat, Geeta; Choudhary, Renu; Kumar, Vijay; Kumar, Vivek

doi:10.1002/9781119827665.ch6

Cited by 2 publications

(1 citation statement)

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“…In recent years, biosurfactant research has expanded recently due to its use in various industrial activities. Biosurfactants are highly beneficial and vital in agriculture, soil remediation, oil recovery, bacterial and insect removal, and food sectors, among other things 23 , 24 . Biosurfactants, or microbial surfactants, are biologically surface-active chemicals generated by microorganisms such as bacteria, yeast, and fungus in coastal habitats and oil-contaminated regions 25 , 26 .…”

Section: Introductionmentioning

confidence: 99%

Larvicidal and anti-termite activities of microbial biosurfactant produced by Enterobacter cloacae SJ2 isolated from marine sponge Clathria sp.

Harikrishnan,

Sudarshan,

Sivasubramani

et al. 2023

Sci Rep

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The widespread use of synthetic pesticides has resulted in a number of issues, including a rise in insecticide-resistant organisms, environmental degradation, and a hazard to human health. As a result, new microbial derived insecticides that are safe for human health and the environment are urgently needed. In this study, rhamnolipid biosurfactants produced from Enterobacter cloacae SJ2 was used to evaluate the toxicity towards mosquito larvae (Culex quinquefasciatus) and termites (Odontotermes obesus). Results showed dose dependent mortality rate was observed between the treatments. The 48 h LC50 (median lethal concentration) values of the biosurfactant were determined for termite and mosquito larvae following the non-linear regression curve fit method. Results showed larvicidal activity and anti-termite activity of biosurfactants with 48 h LC50 value (95% confidence interval) of 26.49 mg/L (25.40 to 27.57) and 33.43 mg/L (31.09 to 35.68), respectively. According to a histopathological investigation, the biosurfactant treatment caused substantial tissue damage in cellular organelles of larvae and termites. The findings of this study suggest that the microbial biosurfactant produced by E. cloacae SJ2 is an excellent and potentially effective agent for controlling Cx. quinquefasciatus and O. obesus.

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