نتایج جستجو برای: biofilms microbial contaminants

تعداد نتایج: 132550  

Journal: :Ankara Universitesi Veteriner Fakultesi Dergisi 2022

Microbial biofilms defined as extremely complex ecosystems are considered clinically important for humans. However, the concept and significant roles of microbial in progression disease have seriously lagged veterinary medicine, when compared with human medicine. Although importance animal health is just beginning to emerge, limited studies paid attention that field lead serious economic losses...

Journal: :Environmental microbiology 2016
Jeremy J Barr Bas E Dutilh Connor T Skennerton Toshikazu Fukushima Marcus L Hastie Jeffrey J Gorman Gene W Tyson Philip L Bond

Biofilms are ubiquitous in nature, forming diverse adherent microbial communities that perform a plethora of functions. Here we operated two laboratory-scale sequencing batch reactors enriched with Candidatus Accumulibacter phosphatis (Accumulibacter) performing enhanced biological phosphorus removal. Reactors formed two distinct biofilms, one floccular biofilm, consisting of small, loose, micr...

2011
Martin Weiss Nielsen Claus Sternberg Søren Molin Birgitte Regenberg

Many microbial cells have the ability to form sessile microbial communities defined as biofilms that have altered physiological and pathological properties compared to free living microorganisms. Biofilms in nature are often difficult to investigate and reside under poorly defined conditions(1). Using a transparent substratum it is possible to device a system where simple biofilms can be examin...

Journal: :Antibiotics 2021

Over the last few decades, study of microbial biofilms has been gaining interest among scientific community [...]

Journal: :The British journal of ophthalmology 1995
T B Gray R T Cursons J F Sherwan P R Rose

BACKGROUND Microbial corneal infection is the most serious complication of contact lens wear. Contact lens cases are a recognised potential source of pathogens associated with corneal ulcers. METHODS This survey established the incidence of protozoal, bacterial, and fungal contact lens case contamination in 101 asymptomatic daily wear cosmetic contact lens wearers from a domiciliary contact l...

Journal: :Electrophoresis 2007
Virginia García-Cañas Alejandro Cifuentes

This work reviews the different analytical strategies based on capillary electromigration techniques developed for detecting microbial contaminants and their products in food matrices. Namely, this work presents an exhaustive and critical review, including works published till March 2007, on CE methods developed to detect and identify contaminants of microbial origin that represent a hazard to ...

Mohsen Mohammadi Galangash, Mostafa Mahdavianpour , Samira Ghafouri Safa ,

Background: Sewage treatment leads to the production of large amount of sludge, containing organic matter and nutrients and considering requirements for recycling could be used as fertilizer. The sludge may also contain various pollutants that pose serious harm to human health and the environment. This study aimed at characterizing the industrial sewage sludge and evaluating its capability as f...

Journal: :Ecotoxicology and environmental safety 2016
M J Waiser G D W Swerhone J Roy V Tumber J R Lawrence

UNLABELLED In this study, differing metrics were utilized to measure effects of erythromycin (ER), trimethoprim (TR) and clindamycin (CL) on the structure and function of attached Wascana Creek, SK microbial communities. All three test antibiotics, especially ER, affected community structure and function of biofilms grown in rotating annular reactors. Biofilm thickness, bacterial biomass, and l...

Journal: :Water research 2013
Dao Janjaroen Fangqiong Q Ling Guillermo Monroy Nicolas Derlon Eberhard Morgenroth Stephen A Boppart Wen-Tso Liu Thanh H Nguyen

Mechanisms of Escherichia coli attachment on biofilms grown on PVC coupons were investigated. Biofilms were grown in CDC reactors using groundwater as feed solution over a period up to 27 weeks. Biofilm physical structure was characterized at the micro- and meso-scales using Scanning Electron Microscopy (SEM) and Optical Coherence Tomography (OCT), respectively. Microbial community diversity wa...

صلاحی اشلقی, بهناز , قوطاسلو, رضا,

  Background and Objective: Microbial biofilms are responsible for 65% of human infections, and are resistance to antibiotics. Pseudomonas aeruginosa is one of the most important biofilm producing bacteria. This review tries to explain the last mechanisms of Pseudomonas aeruginosa biofilm formation, the reasons for its resistance to antimicrobial agents, as well as new preventive measures and a...

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