Potential for Polyethylene Terephthalate (PET) Degradation Revealed by Metabarcoding and Bacterial Isolates from Soil Around a Bitumen Source in Southwestern Iran

Babazadeh, Fatemeh; Gharavi, Sara; Soudi, Mohammad Reza; Zarrabi, Mahboobeh; Talebpour, Zahra

doi:10.1007/s10924-022-02683-z

Cited by 6 publications

(3 citation statements)

References 67 publications

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“… 24 This band is due to the interaction between the PANI polymer chain and the dopant (PTSA). 30 The band at ca. 790 cm −1 corresponds to the out of plane bending vibration of the C–H aromatic bond in the 1,4 disubstituted benzene ring.…”

Section: Resultsmentioning

confidence: 99%

Adsorption of hexavalent chromium from wastewater using polyaniline-coated microcrystalline cellulose nanocomposites

Dewa,

Tichapondwa,

Mhike

2024

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Adsorption of hexavalent chromium from wastewater using polyaniline-coated microcrystalline cellulose nanocomposites

Dewa,

Tichapondwa,

Mhike

2024

RSC Adv.

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“…Bacterial DNA was extracted using the modified SET (sucrose, EDTA, Tris-HCl) buffer method [37]. The quality and concentration of DNA were determined using agarose gel electrophoresis and a Nanodrop Spectrophotometer (Thermo Scientific, Waltham, MA, USA).…”

Section: S Rrna Sequence Analysismentioning

confidence: 99%

Toward Effects of Hydrophobicity on Biosurfactant Production by Bacillus subtilis Isolates from Crude-Oil-Exposed Environments

Hashemi,

Fooladi,

Vahidinasab

et al. 2024

Applied Microbiology

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Background: Due to their structural features, biosurfactants reveal promising physicochemical properties, making them interesting for various applications in different fields, such as the food, cosmetics, agriculture, and bioremediation sectors. In particular, the bioproduction of surfactin, one of the most potent microbially synthesized biosurfactant molecules, is of great interest. However, since the wild-type productivities are comparably low, stimulatory environmental conditions have to be identified for improved bioproduction This study aims to find a correlation between the hydrophobicity and production of the biosurfactant surfactin by B. subtilis isolates from crude-oil-contaminated soil and water. Methods: The surfactin production yield was characterized in adapted batch cultivations using high-performance thin-layer liquid chromatography (HPTLC). Defined hydrophobic environmental conditions were achieved by supplementation with hexadecane or polystyrene beads, and the effects on biosurfactant production were measured. Adaptations at the protein level were analyzed using mass spectrometry measurements. Results: The correlation between hydrophobicity and surfactin production was characterized using Bacillus subtilis strains ZH1 and P7 isolated from crude-oil-contaminated soil and water. Since these isolates show the biodegradation of crude oil and hexadecane as hydrophobic substrates, respectively, a first-time approach, using polystyrene beads, was applied to provide a hydrophobic environment. Interestingly, contrary to popular opinion, reduced biosurfactant production was determined. Using mass spectrometric approaches, the physiological effects of co-cultivation and the cellular response at the protein level were investigated, resulting in altered quantities of stress proteins and proteins involved in the carbon metabolism counter to polystyrene beads. Conclusions: Contrary to common opinion, increasing hydrophobicity does not have a stimulating effect, and even reduces the effect on the bioproduction of surfactin as the main biosurfactant using selected B. subtilis strains.

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“…The use of fungal laccases and peroxidases could be useful for depolymerization of PE plastic waste (Eldin et al, 2022). A potential of the oil seep-contaminated ecosystem for plastic degradation acquired following a long-term adaptation to petroleum compounds has been indicated the diversity of microbial community and the presence of polyethylene terephthalate (PET) degrading bacteria (Babazadeh et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Mass transfer kinetics and mechanisms of polyethylene degradation mediated by bacterial-fungal consortium

Fachrul

Fulazzaky

Rinanti

et al. 2023

Preprint

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Understanding the degradation rate of polyethylene (PE) plastic mediated by bacterial-fungal consortium (BFC) is important to ensure an effective design process of bioremediation technology. This study aims to investigate the degradation behavior of PE plastic waste mediated by the BFC colonies using the modified mass transfer factor models to get better understanding on the kinetics and mechanisms of internal, external and global mass transfer. The performance of rectangular reactor (RR) to degrade PE plastic reaching 61.5% of the efficiency shows an increased efficiency of 55.9% stimulated by the presence of BFC strains in the breakdown of complex PE molecules during the process of bioremediation. Trend in the variation of [kLa]d value viewed almost the same with that of [kLa]g value is higher than that of [kLa]f value during 150 days of the experiment hence the rate-limiting step of PE plastic waste degraded depends on the resistance of external mass transfer. Analysis of degradation efficiency pursuant to both the factors of internal and external mass transfer during the 150-day experimental period provides a new insight on the role of BFC strains to increase the performance of RR process contributing to advance the future bioremediation process of PE plastic waste.

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Potential for Polyethylene Terephthalate (PET) Degradation Revealed by Metabarcoding and Bacterial Isolates from Soil Around a Bitumen Source in Southwestern Iran

Cited by 6 publications

References 67 publications

Adsorption of hexavalent chromium from wastewater using polyaniline-coated microcrystalline cellulose nanocomposites

Adsorption of hexavalent chromium from wastewater using polyaniline-coated microcrystalline cellulose nanocomposites

Toward Effects of Hydrophobicity on Biosurfactant Production by Bacillus subtilis Isolates from Crude-Oil-Exposed Environments

Mass transfer kinetics and mechanisms of polyethylene degradation mediated by bacterial-fungal consortium

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