Efficient biodegradation of phenol at high concentrations by Acinetobacter biofilm at extremely short hydraulic retention times

Kuc, Martin Esteban; Azerrad, Sara P.; Menashe, Ofir; Kurzbaum, Eyal

doi:10.1016/j.jwpe.2022.102781

Cited by 18 publications

(2 citation statements)

References 34 publications

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“…The presence of biofilms introduces various challenges in the medical field, impeding the clinical treatment of persistent infections associated with various indwelling medical devices, as well as diseases connected to chronic and wound-associated illnesses. Research has indicated that the administration of probiotics can assist in the prevention and/or treatment of infections linked to biofilms [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Isolation and Identification of Effective Probiotics on Drug-Resistant Acinetobacter baumannii Strains and Their Biofilms

Abbasi,

Ghasemi,

Ahmadi

et al. 2024

Canadian Journal of Infectious Diseases and Medical Microbiolog

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Introduction. This study aimed to identify, assess, and isolate strong lactobacilli demonstrating broad antibacterial and anti-biofilm activity against drug-resistant strains of Acinetobacter baumannii. Additionally, the mechanism of inhibition of these organisms was to be determined. Methods. Over a 6-month period (from December 2021 to June 2022), 53 clinical A. baumannii strains were collected from clinical samples. Twenty probiotic strains were isolated from local dairy products. Antibacterial activity of Lactobacillus strains’ cell-free supernatant (CFS) was identified using the agar well diffusion method and the microbroth dilution test. Anti-biofilm effect was performed by the microtiter plate assay. The MTT assay was also used to look into the probiotics’ cytotoxic effects on the L929 fibroblast cell line. Results. During the 6-month period, 53 clinical A. baumannii strains were obtained and identified. Out of 20 lactobacillus strains, the CFS of a lactobacillus strain (named L9) showed an inhibitory effect against all A. baumannii strains. Using the broth microdilution method, it was shown that the minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs) of CFS extracts of L9 strains against A. baumannii strains were both ¼ mg/mL. The result of the anti-biofilm showed that the selected probiotic could inhibit biofilm formation. The most common organic acid produced by all Lactobacillus strains, according to the HPLC method, was lactic acid, which was followed by acetic acid. The L929 fibroblast cell line was used in the cytotoxicity assay, which revealed that 100% of the cells in the L929 fibroblast cell line survived treatment with successive doses of CFSs for a full day. Conclusion. The probiotic strain isolated from local yogurt in this study showed potential anti-biofilm and antimicrobial properties against all drug-resistant Acinetobacter isolates. Given the increasing interest in probiotic microorganisms based on their high health benefits, further studies are recommended on the mechanisms of action between probiotics and A. baumannii strains to find new solutions for biological control and treatment of these infections without the use of antibiotics.

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Section: Introductionmentioning

confidence: 99%

Isolation and Identification of Effective Probiotics on Drug-Resistant Acinetobacter baumannii Strains and Their Biofilms

Abbasi,

Ghasemi,

Ahmadi

et al. 2024

Canadian Journal of Infectious Diseases and Medical Microbiolog

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“…If either is present, it may cause a die-off of microorganisms in the bioreactor and ineffective wastewater treatment. Although maintaining the bioaugmented culture in a bioreactor can be difficult, adding certain bacterial cultures to a system (bioaugmentation) may expedite the breakdown of antimicrobial contaminants and resistant chemicals Kuc et al (2022). The washout and dilution of the suspended bacterial culture in a bioreactor are frequently brought on by the continuous injection of wastewater to the reactor.…”

Section: Introductionmentioning

confidence: 99%

Review on Advances in Biodegradation of Phenols: Kinetics, Modelling and Mass Transfer

Ladi

Sridevi

Rachana

et al. 2023

Int. J. Res. Granthaalayah

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Harmful pollutants like phenol and its derivatives are found in wastewater from a wide range of industries, including oil refining, medicines, coal conversion, chemistry, and petrochemistry. The high concentration, high toxicity, and difficult-to-degrade characteristics of phenols in wastewater pose a serious threat to the environment and to human health. By employing different strains of microorganisms and biocatalysts to create biodegradation procedures of diverse pollutants and a wide spectrum of hazardous compounds, biotechnology has successfully addressed significant environmental challenges. Among various phenols removal techniques, biodegradation is both economical and environmentally friendly. During the study of microbial degradation processes, there is a great deal of interest in the potential for mathematical modelling to forecast microbial growth and degrade harmful or inhibiting environmental pollutants at variable quantities. Such mathematical models are frequently created using aromatic compounds like phenol. The review discusses the following topics: kinetics, modelling, and mass transfer; future scope and directions; diverse microorganisms, bioreactors, the metabolic pathway of phenol, influencing factors, and recent advancements in biological therapy.

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Electrospinning as a Method for Fabrication of Nanofibrous Photocatalysts Based on Gallium Oxide

Snetkov,

Morozkina,

Sosnin

et al. 2024

Physica Status Solidi (a)

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Photocatalysts are currently widely used in various research and industrial fields, from water and air purification to solar energy, from self‐cleaning surfaces to wearable biosensors and electronic devices. Among semiconductors, the growing interest is attracted to gallium oxide, especially β‐Ga2O3, due to the unique physical, chemical (especially acid‐resistance), physical–chemical, photochemical properties, and redox potential. These photocatalysts can be used not only as suspended mixture, but also in the form of films, nanoparticles, and nanofibers. The last one is more challenging due to the high level of surface‐to‐volume ratio, porousness, air and water permeability, and excellent morphological and physical–mechanical properties. Moreover, electrospinning techniques, in comparison with fabrication of nanoparticles, allow to obtain photocatalytic devices without usage of additional carrying base, which simplify the industrial process. However, to date there are limited publications related to the Ga2O3 electrospun nanofibers. The aim of this review is to summarize current results of gallium oxide electrospun nanofibers preparation. Special attention is given to the technological parameters of the electrospinning, the polymer solution receipts, and the properties of such nanomaterials and its potential application. Despite the limited number of publications related to Ga2O3 fibers fabrications, that data collected in this review article demonstrate great potential for practical applications.

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Efficient biodegradation of phenol at high concentrations by Acinetobacter biofilm at extremely short hydraulic retention times

Cited by 18 publications

References 34 publications

Isolation and Identification of Effective Probiotics on Drug-Resistant Acinetobacter baumannii Strains and Their Biofilms

Isolation and Identification of Effective Probiotics on Drug-Resistant Acinetobacter baumannii Strains and Their Biofilms

Review on Advances in Biodegradation of Phenols: Kinetics, Modelling and Mass Transfer

Electrospinning as a Method for Fabrication of Nanofibrous Photocatalysts Based on Gallium Oxide

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