Structural insights on bioremediation of polycyclic aromatic hydrocarbons using microalgae: a modelling-based computational study

Sureshkumar, Pandian; Thomas, Jibu; Poornima, Vasudevan

doi:10.1007/s10661-017-6459-4

Cited by 18 publications

(5 citation statements)

References 22 publications

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“…Specifically, 18 PAHs interacted with Threonine282 (Thr282), Alanine337 (Ala337), Serine404 (Ser404), and Lisyne407 (Lys407) via hydrogen bonds. However, in this study, it is evident that only LMW-PAHs were able to bind CYP450, whereas HMW-PAHs were not [25]. Based on this, this preliminary study aimed to study the potential of H. pluvialis for crude oil bioremediation, analyzing (i) the ability to grow in the presence of such a toxic agent; (ii) the quantitative concentration of hydrocarbons degraded in the aqueous phase and biomass, and (iii) the ability of H. pluvialis to grow in heterotrophic conditions.…”

Section: Introductioncontrasting

confidence: 48%

Bioremediation of Crude Oil by Haematococcus Pluvialis: A Preliminary Study

Radice

Sansone²,

D’Arienzo³

et al. 2022

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Nowadays, oil pollution is one of the main environmental problems. The current methods for recovering spills mainly involve chemical agents, but scientific research has focused on more natural and less harmful techniques for the environment, including a consortium of bacteria and microalgae to clean up water contaminated by hydrocarbons. The purpose of this preliminary study was to evaluate the ability of a microalga belonging to Chlorophyceae to grow in the presence of crude oil and remove the principal contaminants. H. pluvialis, which is usually used for nutraceutical purposes, thanks to the production of astaxanthin, was able to grow in anaerobic conditions, varying its metabolism from autotrophic to heterotrophic, exploiting the carbon present in the solution deriving from the presence of 1% of crude oil. Furthermore, the results of bioremediation showed a relevant reduction in chemical pollutants such as nitrate, fluoride, sulfate, and phosphate. The most important aspect of the study was the reduction after 160 days in the hydrocarbon concentration inside not only the culture medium (−32%) but also the algal biomass (−80.25%), demonstrating an optimized degradation rather than a simple absorption inside the alga.

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Section: Introductioncontrasting

confidence: 48%

Bioremediation of Crude Oil by Haematococcus Pluvialis: A Preliminary Study

Radice

Sansone²,

D’Arienzo³

et al. 2022

Processes

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show abstract

“…Specifically, 18 PAHs interacted with Threonine282 (Thr282), Alanine337 (Ala337), Serine404 (Ser404) and Lisyne407 (Lys407) via hydrogen bonds. However, in this study, it is evident that only LMW-PAHs were able to bind CYP450, while HMW-PAHs did not [48]. Therefore, there is an antioxidant mechanism for the degradation of petroleum pollutions, in particular, hydrocarbons.…”

Section: Mechanism Of Actionmentioning

confidence: 54%

Crude Oil Bioremediation: From Bacteria to Microalgae

et al. 2023

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Crude oil is one of the major pollutants present. Its extraction and processing generate processing waters contaminated by hydrocarbons which are harmful to both human health and the flora and fauna that come into contact with it. Hydrocarbon contamination can involve soil and water, and several technologies are used for recovery. The most used techniques for the recovery of spilt oil involve chemical-physical methods that can remove most of the pollutants. Among these, must consider the bioremediation by microorganisms, mostly bacterial capable of degrading many of the toxic compounds contained within the petroleum. Microalgae participate in bioremediation indirectly, supporting the growth of degrading bacteria, and directly acting on contaminants. Their direct contribution is based on the activation of various mechanisms ranging from the production of enzymes capable of degrading hydrocarbons, such as lipoxygenases, to the attack through the liberation of free radicals. The following review analyzed all the works published in the last ten years concerning the ability of microalgae to remove hydrocarbons, intending to identify in these microorganisms an alternative technology to the use of bacteria. The advantages of using microalgae concern not only their ability to remove toxic compounds and release oxygen into the atmosphere but their biomass could then be used in a circular economy process to produce biofuels.

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“…SureshKumar et al, suggested a similarity between microalgae and prokaryotes in PAH degradation mechanisms, focusing on the CYP450 oxidative system. Low-molecular-weight PAHs can interact with CYP450, potentially forming hydrogen bonds [168]. An antioxidant mechanism for petroleum degradation emerges, removing toxins and generating growth-supporting nutrients.…”

Section: Microalgae Role In Petroleum Remediationmentioning

confidence: 99%

Advancing Eco-Sustainable Bioremediation for Hydrocarbon Contaminants: Challenges and Solutions

Alaidaroos

2023

Processes

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In an era of rising population density and industrialization, the environment confronts growing challenges. Soil, agricultural land, and water bodies are becoming increasingly polluted by petroleum waste and hydrocarbons. While hydrocarbons are naturally present in crude oil, refining processes compound the complexity and toxicity of hydrocarbons. This is particularly evident in polycyclic aromatic hydrocarbons (PAHs) found in the air and soil, known for their carcinogenic, mutagenic, and teratogenic properties. In response, biodegradation emerges as an eco-friendly, cost-effective solution, especially in petroleum-contaminated settings. Biodiverse microbial communities play a pivotal role in managing hydrocarbon contamination, contingent on location, toxicity, and microbial activity. To optimize biodegradation, understanding its mechanisms is essential. This review delves into varied bioremediation techniques, degradation pathways, and the contributions of microbial activities to efficiently removing hydrocarbon pollutants. Recent research spotlights specific microorganisms like bacteria, microalgae, and fungi adept at hydrocarbon degradation, offering a contemporary perspective on petroleum hydrocarbon pollutant bioremediation. These microorganisms efficiently break down petroleum hydrocarbons, with enzymatic catalysis markedly accelerating pollutant breakdown compared to conventional methods. Given the intricate nature of hydrocarbon contamination, cooperative bacterial consortia are instrumental in effective cleanup, driven by specific genes guiding bacterial metabolism. For cost-effective and efficient removal from compromised environments, it is advisable to adopt an integrated approach that combines biostimulation and bioaugmentation.

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Structural insights on bioremediation of polycyclic aromatic hydrocarbons using microalgae: a modelling-based computational study

Cited by 18 publications

References 22 publications

Bioremediation of Crude Oil by Haematococcus Pluvialis: A Preliminary Study

Bioremediation of Crude Oil by Haematococcus Pluvialis: A Preliminary Study

Crude Oil Bioremediation: From Bacteria to Microalgae

Advancing Eco-Sustainable Bioremediation for Hydrocarbon Contaminants: Challenges and Solutions

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