Degradation ofsec-hexylbenzene and its metabolites by a biofilm-forming yeastTrichosporonasahiiB1 isolated from oil-contaminated sediments in Quangninh coastal zone, Vietnam

Nhi-Cong, Le Thi; Ngoc, Cung Thi; Minh, Nghiem Ngoc; Ha, Hoang Phuong; Lien, Do Thi; Tuan, Do Van; Quyền, Đồng Văn; Ike, Michihiko; Uyen, Do Thi To

doi:10.1080/10934529.2015.1094351

Cited by 9 publications

(4 citation statements)

References 23 publications

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“…According to previous reports, Trichosporon species have been isolated from a wide range of substrates, including human hair, soil, and cheese, which should be the sources of the accumulated Trichosporon in activated sludge (Cho et al 2015;Evans and Seviour 2012). Previous reports have indicated that Trichosporon hyphae are involved in the formation of biofilms and sludge flocs and contribute greatly to the degradation of caffeine and sec-hexylbenzene in wastewater (Lakshmi and Das 2013;Nhi-Cong le et al 2016). Cryptococcus species play important roles in wastewater treatment processes by converting large-molecule organics into small, degradable lipids (Santos et al 2014).…”

Section: Resultsmentioning

confidence: 95%

Ignored fungal community in activated sludge wastewater treatment plants: diversity and altitudinal characteristics

Niu

Xu³

et al. 2016

Environ Sci Pollut Res

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Fungi are important contributors to the various functions of activated sludge wastewater treatment plants (WWTPs); however, the diversity and geographic characteristics of fungal populations have remained vastly unexplored. Here, quantitative polymerase chain reaction and 454 pyrosequencing were combined to investigate the abundance and diversity of the activated sludge fungal communities from 18 full-scale municipal WWTPs in China. Phylogenetic taxonomy revealed that the members of the fungal communities were assigned to 7 phyla and 195 genera. Ascomycota and Basidiomycota were the most abundant phyla, dominated by Pluteus, Wickerhamiella, and Penicillium. Twenty-three fungal genera, accounting for 50.1 % of the total reads, were shared by 18 WWTPs and constituted a core fungal community. The fungal communities presented similar community diversity but different community structures across the WWTPs. Significant distance decay relationships were observed for the dissimilarity in fungal community structure and altitudinal distance between WWTPs. Additionally, the community evenness increased from 0.25 to 0.7 as the altitude increased. Dissolved oxygen and the C/N ratio were determined to be the most dominant contributors to the variation in fungal community structure via redundancy analysis. The observed data demonstrated the diverse occurrence of fungal species and gave a marked view of fungal community characteristics based on the previously unexplored fungal communities in activated sludge WWTPs.

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Section: Resultsmentioning

confidence: 95%

Ignored fungal community in activated sludge wastewater treatment plants: diversity and altitudinal characteristics

Niu

Xu³

et al. 2016

Environ Sci Pollut Res

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“…Phenylalkanes are persistent organic pollutants which are mutagenic and carcinogenic. Nhi-Cong et al (2016) reported the biodegradation of sec-hexylbenzene by the yeast Trichosporon asahii B1, isolated from oil-contaminated sediments collected from the coastal area of Quangninh in Vietnam. This marine yeast transformed this branched side-chain benzene with biofilm-forming cells more efficiently than with planktonic cells.…”

Section: Petroleum Hydrocarbonsmentioning

confidence: 99%

Marine-derived fungi as biocatalysts

Virués-Segovia

Muñoz-Mira²,

Durán-Patrón³

et al. 2023

Front. Microbiol.

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Marine microorganisms account for over 90% of ocean biomass and their diversity is believed to be the result of their ability to adapt to extreme conditions of the marine environment. Biotransformations are used to produce a wide range of high-added value materials, and marine-derived fungi have proven to be a source of new enzymes, even for activities not previously discovered. This review focuses on biotransformations by fungi from marine environments, including bioremediation, from the standpoint of the chemical structure of the substrate, and covers up to September 2022.

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“…The analysis was performed as described in our previous publication (Nhi-Cong et al, 2016). These experiments were conducted independently at least three times and calculated standard deviation (SD) values.…”

Section: Analysis Of Petroleum Hydrocarbon Degradation By High-perfor...mentioning

confidence: 99%

Petroleum hydrocarbon degradation of husk biochar product carrying biofilm-forming bacteria

Luong,

Mai,

Anh

et al. 2023

Vietnam J. Biotechnol.

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Environmental pollution problems caused by petroleum and its derivatives such as polycyclic aromatic hydrocarbons (PAHs) has remarkably increased and become a major global threat to human health and ecological equilibrium, resulting in a crucial need for remediation. Recently, in order to solve this problem, biofilm is one of the biodegradation approaches which could degrade and transform oil components effectively. Moreover, to enhance the petroleum hydrocarbons removal efficiency and easy to apply in any place bio-carriers, biochar was used to attach biofilm-forming microorganisms. Biochar is not only used as a carrier for microorganisms but also a source of substrates to help absorb a part of aromatic compounds. Therefore, in this investigation, we used the mixture of multiple petroleum-degrading and biofilm-forming bacterial strains immobilized on husk biochar to create an oil-degrading product. The ability of oil-degrading bacteria immobilized on biochar, planktonic bacteria and biochar without bacteria on the elimination of total petroleum hydrocarbons and several aromatic hydrocarbons was investigated. The results indicated that using husk biochar as a carrier for biofilm-forming bacteria to attach on could considerably enhance the removal efficiency of oil components. At 50 kg/batch scale, the formed product could remove 99% of total petroleum hydrocarbons with the initial amount of 4.786 mg/l and over 96% of aromatic hydrocarbons including anthracene, naphthalene, phenanthrene and pyrene with the initial amount of 250 mg/l. The obtained product is porous, black, with particle size of 1-3 mm, cell density of ≥ 109 CFU/g(ml), stable for use ≥ 6 months and safe for the environment. In general, the obtained results highpoint the great possible of applying this product in the treatment of oil contaminated soil and water.

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Degradation ofsec-hexylbenzene and its metabolites by a biofilm-forming yeastTrichosporonasahiiB1 isolated from oil-contaminated sediments in Quangninh coastal zone, Vietnam

Cited by 9 publications

References 23 publications

Ignored fungal community in activated sludge wastewater treatment plants: diversity and altitudinal characteristics

Ignored fungal community in activated sludge wastewater treatment plants: diversity and altitudinal characteristics

Marine-derived fungi as biocatalysts

Petroleum hydrocarbon degradation of husk biochar product carrying biofilm-forming bacteria

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