Biodegradation of Phenol by Antarctic Strains of Aspergillus fumigatus

Gerginova, Maria; Manasiev, Jordan; Yemendzhiev, Husein; Terziyska, Anna; Peneva, Nadejda; Alexieva, Zlatka

doi:10.5560/znc.2013.68c0384

Cited by 9 publications

(6 citation statements)

References 47 publications

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“…strain ATR208 can -1 completely degrade phenol up to 0.6 g l at higher time (Sepehr et al, 2019). On the basis of previous studies, Antarctic -1 microorganisms are reported to degrade phenol up to 0.5 g l at temperature as low as 10°C (Gerginova et al, 2013;Lee et al, 2018). Phenol is a major constituent in fuel oil, pharmaceutical and personal care products (Kim et al, 2018;Harley et al, 2019) and can be released into the Antarctic environment via many channels, particularly during marine accidents and the disposal of 'grey water' wastes from research stations (Emnet et al, 2015;Vázquez et al, 2017;Martorell et al, 2019).…”

Section: Resultsmentioning

confidence: 97%

Statistical optimisation for enhancement of phenol biodegradation by the Antarctic soil bacterium Arthrobacter sp. strain AQ5-15 using response surface methodology

Subramaniam¹,

Shaharuddin²,

Tengku-Mazuki³

et al. 2020

JEB

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Aim: Effective bioremediation requires optimisation of conditions under which the process takes place. In this study, an Antarctic soil bacterium, Arthrobacter sp. strain AQ5-15, was evaluated for phenol biodegradation under statistically optimised conditions. Methodology: The composition of degradation media and the culture conditions for this study were determined according to the experimental requirements obtained from Plackett-Burman factorial design (PB) and Box-Wilson Central Composite Design (CCD), respectively. Phenol degradation was monitored by 4-aminoantipyrine colorimetric assay and bacterial growth was quantified by measuring optical density (OD600 nm) at 72 hr. Results: A preliminary screening experiment using the Plackett-Burman design indicated that all the factors screened (ammonium sulphate concentration, sodium chloride concentration, pH and temperature) had significant influence on degradation performance. Response Surface Methodology was then utilised to further optimise the phenol-degrading process using Central Composite Design. The maximum percentage of phenol degradation achieved with CCD was 99.42%, under medium conditions of 0.15 g l-1 (NH4)2SO4, 0.13 g l-1 NaCl, pH 7.25 and incubation at 15°C for 72 hr. The strain could degrade phenol when exposed to an initial concentration of up to 1.5 g l-1 under these optimised conditions. Interpretation: The tolerance and degradation characteristics of strain AQ5-15 suggest that it has potential application in bioremediation of polluted sites and in the treatment of relatively cool water bodies contaminated with phenol.

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Section: Resultsmentioning

confidence: 97%

Statistical optimisation for enhancement of phenol biodegradation by the Antarctic soil bacterium Arthrobacter sp. strain AQ5-15 using response surface methodology

Subramaniam¹,

Shaharuddin²,

Tengku-Mazuki³

et al. 2020

JEB

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“…25 Aspergillus is found in all countries and continents including Antartica. 26 Although Aspergillus niger is an infrequent cause of endophthalmitis, 27 it can often grow on humid and aerobic surfaces.…”

Section: Discussionmentioning

confidence: 99%

A 10-year-old immunocompetent girl with endogenous fungal endophthalmitis: Report of a case and review of the literature

Guerriero

Dammacco

Albano

et al. 2021

European Journal of Ophthalmology

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Endogenous Endophthalmitis (EE) is a rare cause of blindness in the pediatric age group and this may account for the paucity of management guidelines in the literature. In this report, we describe our experience with a 10-year-old immunocompetent female who developed EE and became blind because of rapidly progressive and destructive inflammatory changes in her eye in spite of seemingly timely treatment.

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“…Among the phenol-degrading gram-negative bacteria, Pseudomonas , Acinetobacter and Alcaligenes are regarded as the most common species to be isolated from contaminated sites. The abilities of these species to utilize phenolic compounds in particular have been widely documented 21, 22, 23. Cluster 2 has only two members.…”

Section: Discussionmentioning

confidence: 99%

Phenol degradation and genotypic analysis of dioxygenase genes in bacteria isolated from sediments

Tian

Zhou

et al. 2017

Brazilian Journal of Microbiology

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The aerobic degradation of aromatic compounds by bacteria is performed by dioxygenases. To show some characteristic patterns of the dioxygenase genotype and its degradation specificities, twenty-nine gram-negative bacterial cultures were obtained from sediment contaminated with phenolic compounds in Wuhan, China. The isolates were phylogenetically diverse and belonged to 10 genera. All 29 gram-negative bacteria were able to utilize phenol, m-dihydroxybenzene and 2-hydroxybenzoic acid as the sole carbon sources, and members of the three primary genera Pseudomonas, Acinetobacter and Alcaligenes were able to grow in the presence of multiple monoaromatic compounds. PCR and DNA sequence analysis were used to detect dioxygenase genes coding for catechol 1,2-dioxygenase, catechol 2,3-dioxygenase and protocatechuate 3,4-dioxygenase. The results showed that there are 4 genotypes; most strains are either PNP (catechol 1,2-dioxygenase gene is positive, catechol 2,3-dioxygenase gene is negative, protocatechuate 3,4-dioxygenase gene is positive) or PNN (catechol 1,2-dioxygenase gene is positive, catechol 2,3-dioxygenase gene is negative, protocatechuate 3,4-dioxygenase gene is negative). The strains with two dioxygenase genes can usually grow on many more aromatic compounds than strains with one dioxygenase gene. Degradation experiments using a mixed culture representing four bacterial genotypes resulted in the rapid degradation of phenol. Determinations of substrate utilization and phenol degradation revealed their affiliations through dioxygenase genotype data.

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Biodegradation of Phenol by Antarctic Strains of Aspergillus fumigatus

Cited by 9 publications

References 47 publications

Statistical optimisation for enhancement of phenol biodegradation by the Antarctic soil bacterium Arthrobacter sp. strain AQ5-15 using response surface methodology

Statistical optimisation for enhancement of phenol biodegradation by the Antarctic soil bacterium Arthrobacter sp. strain AQ5-15 using response surface methodology

A 10-year-old immunocompetent girl with endogenous fungal endophthalmitis: Report of a case and review of the literature

Phenol degradation and genotypic analysis of dioxygenase genes in bacteria isolated from sediments

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