Revealing the Efficacy of Thermostable Biosurfactant in Heavy Metal Bioremediation and Surface Treatment in Vegetables

Ravindran, Amrudha; Sajayan, Arya; Priyadharshini, Gopal Balasubramian; Selvin, Joseph; Kiran, George Seghal

doi:10.3389/fmicb.2020.00222

Cited by 94 publications

(28 citation statements)

References 45 publications

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“…Validated results revealed that potential application of biosurfactants in mouthwash preparations is safe and a feasible alternative ( Farias et al, 2019 ). Biosurfactants are also applicable for the remediation of heavy metals from contaminated environments apart from hydrocarbon bioremediation ( Ravindran et al, 2020 ). Several researchers demonstrated application of biosurfactants such as rhamnolipid, lipopeptide, and glycoprotein in microbe-enhanced oil recovery ( Arora et al, 2019 ; Purwasena et al, 2019 ).…”

Section: Significance Of Polycyclic Aromatic Hydrocarbon Remediation mentioning

confidence: 99%

Polycyclic Aromatic Hydrocarbons: Sources, Toxicity, and Remediation Approaches

et al. 2020

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Polycyclic aromatic hydrocarbons (PAHs) are widespread across the globe mainly due to long-term anthropogenic sources of pollution. The inherent properties of PAHs such as heterocyclic aromatic ring structures, hydrophobicity, and thermostability have made them recalcitrant and highly persistent in the environment. PAH pollutants have been determined to be highly toxic, mutagenic, carcinogenic, teratogenic, and immunotoxicogenic to various life forms. Therefore, this review discusses the primary sources of PAH emissions, exposure routes, and toxic effects on humans, in particular. This review briefly summarizes the physical and chemical PAH remediation approaches such as membrane filtration, soil washing, adsorption, electrokinetic, thermal, oxidation, and photocatalytic treatments. This review provides a detailed systematic compilation of the eco-friendly biological treatment solutions for remediation of PAHs such as microbial remediation approaches using bacteria, archaea, fungi, algae, and co-cultures. In situ and ex situ biological treatments such as land farming, biostimulation, bioaugmentation, phytoremediation, bioreactor, and vermiremediation approaches are discussed in detail, and a summary of the factors affecting and limiting PAH bioremediation is also discussed. An overview of emerging technologies employing multi-process combinatorial treatment approaches is given, and newer concepts on generation of value-added by-products during PAH remediation are highlighted in this review.

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Section: Significance Of Polycyclic Aromatic Hydrocarbon Remediation mentioning

confidence: 99%

Polycyclic Aromatic Hydrocarbons: Sources, Toxicity, and Remediation Approaches

et al. 2020

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“…For example, it has been reported that at two-fold CMC, the biosurfactant produced by Bacillus sp . shows high heavy metal removal, mainly for Cd (99.93%), Pb (97.73%), Mn (89.5%), and Hg (75.5%) showing the formation of a co-precipitate [ 92 ]. Biosurfactant concentration has been reported to be an important parameter.…”

Section: Environmental Uses Of Biosurfactantsmentioning

confidence: 99%

Microbial biosurfactants: a review of recent environmental applications

et al. 2022

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Microbial biosurfactants are low-molecular-weight surface-active compounds of high industrial interest owing to their chemical properties and stability under several environmental conditions. The chemistry of a biosurfactant and its production cost are defined by the selection of the producer microorganism, type of substrate, and purification strategy. Recently, biosurfactants have been applied to solve or contribute to solving some environmental problems, with this being their main field of application. The most referenced studies are based on the bioremediation of contaminated soils with recalcitrant pollutants, such as hydrocarbons or heavy metals. In the case of heavy metals, biosurfactants function as chelating agents owing to their binding capacity. However, the mechanism by which biosurfactants typically act in an environmental field is focused on their ability to reduce the surface tension, thus facilitating the emulsification and solubilization of certain pollutants ( in-situ biostimulation and/or bioaugmentation). Moreover, despite the low toxicity of biosurfactants, they can also act as biocidal agents at certain doses, mainly at higher concentrations than their critical micellar concentration. More recently, biosurfactant production using alternative substrates, such as several types of organic waste and solid-state fermentation, has increased its applicability and research interest in a circular economy context. In this review, the most recent research publications on the use of biosurfactants in environmental applications as an alternative to conventional chemical surfactants are summarized and analyzed. Novel strategies using biosurfactants as agricultural and biocidal agents are also presented in this paper.

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“…The role of LPs in the removal of heavy metals from the environment has been widely reported [109] , [110] , [111] , [112] . Surfactin, synthesized by bacteria of the Bacillus genus, is capable of removing zinc and copper [103] , [113] ; Colistin, produced by Paenibacillus polymyxa , binds efficiently to copper [114] ; pseudofactin II, produced by Pseudomonas fluorescens BD5, also interacts with zinc and copper [109] ; while the MSI54 LP, produced by a Bacillus bacterium isolated from a marine sponge has an affinity for lead, mercury, manganese, and cadmium [115] . The ionic charge of LPs is known to play an important role in their interaction with heavy metals.…”

Section: Lipopeptide Relationships With Heavy Metalsmentioning

confidence: 99%

The ecological roles of microbial lipopeptides: Where are we going?

Gutiérrez-Chávez

Benaud

Ferrari

2021

Computational and Structural Biotechnology Journal

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Lipopeptides (LPs) are secondary metabolites produced by a diversity of bacteria and fungi. Their unique chemical structure comprises both a peptide and a lipid moiety. LPs are of major biotechnological interest owing to their emulsification, antitumor, immunomodulatory, and antimicrobial activities. To date, these versatile compounds have been applied across multiple industries, from pharmaceuticals through to food processing, cosmetics, agriculture, heavy metal, and hydrocarbon bioremediation. The variety of LP structures and the diversity of the environments from which LP-producing microorganisms have been isolated suggest important functions in their natural environment. However, our understanding of the ecological role of LPs is limited. In this review, the mode of action and the role of LPs in motility, antimicrobial activity, heavy metals removal and biofilm formation are addressed. We include discussion on the need to characterise LPs from a diversity of microorganisms, with a focus on taxa inhabiting ‘extreme’ environments. We introduce the use of computational target fishing and molecular dynamics simulations as powerful tools to investigate the process of interaction between LPs and cell membranes. Together, these advances will provide new understanding of the mechanism of action of novel LPs, providing greater insights into the roles of LPs in the natural environment.

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Revealing the Efficacy of Thermostable Biosurfactant in Heavy Metal Bioremediation and Surface Treatment in Vegetables

Cited by 94 publications

References 45 publications

Polycyclic Aromatic Hydrocarbons: Sources, Toxicity, and Remediation Approaches

Polycyclic Aromatic Hydrocarbons: Sources, Toxicity, and Remediation Approaches

Microbial biosurfactants: a review of recent environmental applications

The ecological roles of microbial lipopeptides: Where are we going?

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