Scientometric Analysis of Diesel Pollutions in Antarctic Territories: A Review of Causes and Potential Bioremediation Approaches

Roslee, Ahmad Fareez Ahmad; Ahmad, Siti Aqlima; Gómez-Fuentes, Claudio; Shaharuddin, Noor Azmi; Khalil, Khalilah Abdul; Zulkharnain, Azham

doi:10.3390/su13137064

Cited by 2 publications

(2 citation statements)

References 110 publications

(102 reference statements)

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“…Bioremediation provides potential solutions to completely remove AHs, PAHs, and heterocyclic compounds from the environment [7][8][9][10]. Various approaches and techniques have been employed to ensure that bioremediation efforts lead to positive outcomes despite the challenging environmental conditions in Antarctica [11,12]. However, the application of bioremediation in Antarctica requires the use of bacteria natively present in Antarctica as dictated by the Antarctic Treaty System (ATS).…”

Section: Introductionmentioning

confidence: 99%

Carbazole Degradation and Genetic Analyses of Sphingobium sp. Strain BS19 Isolated from Antarctic Soil

et al. 2023

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The Antarctic region is facing a higher risk of hydrocarbon pollution due to increased human activities. Compounds such as polycyclic aromatic hydrocarbons (PAHs) and heterocyclic compounds available in fuel are highly stable and can reside in the environment for prolonged periods if left untreated. The isolation of native strains is needed to develop bioremediation applications suitable for Antarctica. Strain BS19 was isolated as heterocyclic compound carbazole-degrading bacterium from Antarctic soil through culture enrichment. The 16S rRNA gene sequences identified strain BS19 as a member of the Sphingonium genus. Strain BS19 could remove 75% of carbazole after 15 days of culture at 15 °C. Whole genome sequencing resulted in incomplete genomes of 4.77 Mb in 96 contigs with the lowest GC content among Sphingobium sp. strains. The analyses revealed car gene cluster and ant genes and cat gene cluster required for the complete metabolism of carbazole as a source of carbon and energy. The comparison of the car gene cluster showed a similarity to the car gene cluster of Novosphingobium KA1. The expression of the car gene cluster was confirmed with an RT-PCR analysis indicating the involvement of the predicted genes in carbazole degradation. The findings from this study could provide more insight into developing bioremediation applications and approaches for Antarctica and other cold environments.

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confidence: 99%

Carbazole Degradation and Genetic Analyses of Sphingobium sp. Strain BS19 Isolated from Antarctic Soil

et al. 2023

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“…Given the potential consequences of diesel pollution, there have been increasing research efforts towards the clean-up of hydrocarbon pollutants [8]. Bioremediation has been shown to be a successful strategy.…”

Section: Introductionmentioning

confidence: 99%

The Utilisation of Antarctic Microalgae Isolated from Paradise Bay (Antarctic Peninsula) in the Bioremediation of Diesel

Zamree,

Puasa,

Lim

et al. 2023

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Research has confirmed that the utilisation of Antarctic microorganisms, such as bacteria, yeasts and fungi, in the bioremediation of diesel may provide practical alternative approaches. However, to date there has been very little attention towards Antarctic microalgae as potential hydrocarbon degraders. Therefore, this study focused on the utilisation of an Antarctic microalga in the bioremediation of diesel. The studied microalgal strain was originally obtained from a freshwater ecosystem in Paradise Bay, western Antarctic Peninsula. When analysed in systems with and without aeration, this microalgal strain achieved a higher growth rate under aeration. To maintain the growth of this microalga optimally, a conventional one-factor-at a-time (OFAT) analysis was also conducted. Based on the optimized parameters, algal growth and diesel degradation performance was highest at pH 7.5 with 0.5 mg/L NaCl concentration and 0.5 g/L of NaNO3 as a nitrogen source. This currently unidentified microalga flourished in the presence of diesel, with maximum algal cell numbers on day 7 of incubation in the presence of 1% v/v diesel. Chlorophyll a, b and carotenoid contents of the culture were greatest on day 9 of incubation. The diesel degradation achieved was 64.5% of the original concentration after 9 days. Gas chromatography analysis showed the complete mineralisation of C7–C13 hydrocarbon chains. Fourier transform infrared spectroscopy analysis confirmed that strain WCY_AQ5_3 fully degraded the hydrocarbon with bioabsorption of the products. Morphological and molecular analyses suggested that this spherical, single-celled green microalga was a member of the genus Micractinium. The data obtained confirm that this microalga is a suitable candidate for further research into the degradation of diesel in Antarctica.

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Scientometric Analysis of Diesel Pollutions in Antarctic Territories: A Review of Causes and Potential Bioremediation Approaches

Cited by 2 publications

References 110 publications

Carbazole Degradation and Genetic Analyses of Sphingobium sp. Strain BS19 Isolated from Antarctic Soil

Carbazole Degradation and Genetic Analyses of Sphingobium sp. Strain BS19 Isolated from Antarctic Soil

The Utilisation of Antarctic Microalgae Isolated from Paradise Bay (Antarctic Peninsula) in the Bioremediation of Diesel

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