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Microbial enzymes as powerful natural anti-biofilm candidates.
Microb Cell Fact
December 2024
Department of Microbiology and Immunology, Faculty of Pharmacy, Delta University for Science and Technology, International Coastal Road, Gamasa, 11152, Egypt.
Bacterial biofilms pose significant challenges, from healthcare-associated infections to biofouling in industrial systems, resulting in significant health impacts and financial losses globally. Classic antimicrobial methods often fail to eradicate sessile microbial communities within biofilms, requiring innovative approaches. This review explores the structure, formation, and role of biofilms, highlighting the critical importance of exopolysaccharides in biofilm stability and resistance mechanisms.
View Article and Find Full Text PDFApplying a polysaccharide lyase from to disrupt alginate exopolysaccharide produced by clinical isolates.
Appl Environ Microbiol
December 2024
Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA.
Unlabelled: is considered one of the most challenging, drug-resistant, opportunistic pathogens partly due to its ability to synthesize robust biofilms. Biofilm is a mixture of extracellular polymeric substances (EPS) that encapsulates microbial cells, leading to immune evasion, antibiotic resistance, and thus higher risk of infection. In the cystic fibrosis lung environment, undergoes a mucoid transition, defined by overproduction of the exopolysaccharide alginate.
View Article and Find Full Text PDFZnO-Rutin nanostructure as a potent antibiofilm agent against Pseudomonasaeruginosa.
Microb Pathog
January 2025
Department of Microbiology, Faculty of Basic Sciences, Lahijan Branch, Islamic Azad University, Lahijan, Iran. Electronic address:
Pseudomonas aeruginosa is a common human pathogen that is resistant to multiple antibiotics due to its ability to form biofilms. Developing novel nanoformulations capable of inhibiting and removing biofilms offers a promising solution for controlling biofilm-related infections. In this study, we investigated the anti-biofilm activity of rutin-conjugated ZnO nanoparticles (ZnO-Rutin NPs) in pathogenic strains of P.
View Article and Find Full Text PDFAlginate-like exopolysaccharides extracted from different waste sludges exhibit varying physicochemical and material properties.
Front Microbiol
November 2024
Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, The University of Dublin College Green, Dublin, Ireland.
This study examined the influence of different wastewater treatment processes on the physicochemical properties of Alginate-Like Exopolymers (ALE) extracted from waste sludge. Sludge samples were collected from wastewater treatment plants (WWTPs) processing both combined industrial and domestic wastewater, as well as domestic wastewater alone. Among the processes studied, aerobic granular sludge (AGS) produced the highest ALE yield (352 ± 50 mg/g-VS), significantly exceeding that from membrane bioreactor (170 ± 41 mg/g-VS) and conventional activated sludge (<130 mg/g-VS).
View Article and Find Full Text PDFSolids retention time (SRT) control in the co-treatment of leachate with domestic sewage in aerobic granular sludge systems: Impacts on system performance, operational stability, and bioresource production.
Bioresour Technol
January 2025
Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Ceará, Brazil. Electronic address:
Article Synopsis
- This study explores the effectiveness of treating leachate and domestic sewage together using aerobic granular sludge (AGS) systems in municipal wastewater treatment plants, focusing on granule formation and system stability.
- In the study, two different retention times for solids (SRT) were analyzed: R1 maintained about 9 days, while R2 ranged from 10 to 25 days; low levels of leachate (5%) showed no detrimental effects, but higher levels (10%) negatively impacted system stability and biopolymer production.
- The findings indicate that controlling SRT is key for optimizing the production of useful biopolymers and improving overall treatment efficiency and stability, highlighting the importance of proper biomass management to sustain granule functions.
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