5,583 results match your criteria coliforms


Small ruminants milk from Tunisian oasis: physicochemical characteristics, mineral contents, and microbiological quality.

Trop Anim Health Prod 2021 Dec 4;54(1). Epub 2021 Dec 4.

Regional Public Health Laboratory of Tozeur, Ministry of Public Health, 2233, Bled El hadar, Tozeur, Tunisia.

Characteristics and quality aspects of milk from native ovine Queue Fine de l'Ouest (QFO) and the exotic D'man (DMN) breeds were investigated and compared with those of two subgroups of the local goat population Arbi and Serti. A total of 418 individual milk samples were collected from multiparous lactating animals reared in the continental oasis region of Tunisia. Samples were analyzed for physical parameters (pH, density, and acidity), chemical composition (dry matter, fat, protein, lactose, casein, ash, and casein/protein ratio), mineral concentrations (Ca, P, Na, K, and Ca/P) and microbiological features (total mesophilic aerobic bacteria (TMAB), total coliforms count (TCC), lactic acid bacteria (LAB), sulphite-reducing Clostridium (CSR), yeast and molds (Y/M), Staphylococcus aureus (S. Read More

View Article and Full-Text PDF
December 2021

Investigation of groundwater contamination in relation to septic systems in Kitwe West Township, Kitwe, Zambia.

Water Sci Technol 2021 Nov;84(10-11):3277-3285

Department of Civil Engineering and Construction, Copperbelt University, P.O. Box 21692, Kitwe, Zambia E-mail:

This study investigated the quality of groundwater with respect to septic systems in Kitwe West township located in the western part of Zambia's Kitwe district. The study area was selected because most households in the township use boreholes and septic systems as sources of drinking water and wastewater disposal facilities respectively. The study showed the presence of total coliforms in 90% of the boreholes while only 30% of the boreholes were contaminated with fecal coliforms rendering the water unsafe for drinking. Read More

View Article and Full-Text PDF
November 2021

Relationships between abiotic and biotic variables in a maturation pond and their influence on E. coli removal.

Water Sci Technol 2021 Nov;84(10-11):2903-2912

Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais, Belo Horizonte 31270-010, Brazil E-mail:

The effects of depth and climate seasonality on zooplankton, algal biomass, coliforms and Escherichia coli in a small full-scale shallow maturation pond receiving pre-treated domestic wastewater were evaluated during a tropical climatic seasonal cycle. The experiment revealed that the zooplankton community was dominated by rotifers and protozoans, and concentrations were influenced by seasonality. A negative correlation between zooplankton, and pH, dissolved oxygen, temperature and ultraviolet radiation, and chlorophyll-a and Escherichia coli were observed at all depths. Read More

View Article and Full-Text PDF
November 2021

Evaluating the impacts of leachate co-treatment on a full-scale municipal wastewater treatment plant in Canada.

Waste Manag 2021 Nov 27;138:19-29. Epub 2021 Nov 27.

Senior Manager Operations, Gold Bar Wastewater Treatment Plant, EPCOR Tower, 2000 10423 101 Street, Edmonton, AB T5H 0E8, Canada. Electronic address:

The objective of this study was to evaluate the impacts of leachate co-treatment on a full-scale municipal WWTPby comparing plant performance at varying levels of leachate contributions and hydraulic loadings.Leachate BOD:COD ratio was 0.08 ± 0. Read More

View Article and Full-Text PDF
November 2021

Safe water supply challenges for hand hygiene in the prevention of COVID-19 in Southern Nations, Nationalities, and People's Region (SNNPR), Ethiopia.

Heliyon 2021 Nov 19;7(11):e08430. Epub 2021 Nov 19.

Department of Public Health, College of Health Science and Medicine, Dilla University, Dilla, Ethiopia.

Background: Proper hand hygiene practices are critical in disease prevention and control, including preventing the spread of the COVID-19 pandemic, but according to a recent global report, three billion people lack access to basic hand washing facilities (soap and water) at home. Therefore, this study aimed to determine the challenges related to safe and adequate water provision for hand hygiene in the prevention of COVID-19 in Gedeo Zone, SNNPR, Ethiopia.

Methods: An institutional-based cross-sectional study design was used to assess the challenges associated with safe water supply in the prevention of COVID-19 in Gedeo Zone. Read More

View Article and Full-Text PDF
November 2021

Assessing hygiene indicators in two dairies in Algeria in producing pasteurized milk.

Vet World 2021 Sep 4;14(9):2317-2324. Epub 2021 Sep 4.

Laboratory of Food Hygiene and Quality Insurance System (HASAQ), Higher National Veterinary School, Rue Issad Abbes, Oued Smar, Algiers 16000, Algeria.

Background And Aim: There is a worldwide controversy about the choice of microbial flora for use as process hygiene indicators. This study aimed to evaluate the pertinence of using either coliforms or Enterobacteriaceae (EB) as process hygiene indicators in the pasteurized milk production line. Two flora families and total flora were used as bacterial indicators in some stages of pasteurized milk production line to identify the origin of post-pasteurization contamination and compare the results obtained for each flora. Read More

View Article and Full-Text PDF
September 2021

Ecology of Nontuberculous Mycobacteria.

Microorganisms 2021 Oct 30;9(11). Epub 2021 Oct 30.

Department of Biological Sciences, Virginia Tech, Blacksburg, VA 24061, USA.

Nontuberculous mycobacteria (NTM) are opportunistic human pathogens that are widespread in the human environment. In fact, NTM surround humans. The basis for their widespread presence in soils and natural and human-engineered waters lies primarily in their disinfectant resistance, biofilm formation, and adaptability to fluctuating environmental conditions. Read More

View Article and Full-Text PDF
October 2021

Applications of Nisin and EDTA in Food Packaging for Improving Fabricated Chitosan-Polylactate Plastic Film Performance and Fish Fillet Preservation.

Membranes (Basel) 2021 Nov 4;11(11). Epub 2021 Nov 4.

Department of Food Science, National Taiwan Ocean University, Keelung 202301, Taiwan.

This study aimed to increase the antibacterial activity of chitosan-polylactic acid (PLA) composite film by adding nisin and ethylenediaminetetraacetic acid (EDTA). We evaluated the mechanical, physicochemical, and antibacterial properties of various PLA composite films, as well as the enhancement effect of PLA composite films with EDTA + nisin on the preservation of grouper fillets. Films of PLA alone, PLA plus chitosan (C5), PLA plus nisin + EDTA (EN2), and PLA plus chitosan plus nisin + EDTA (C5EN1 and C5EN2) were prepared. Read More

View Article and Full-Text PDF
November 2021

Spatial and temporal variations in water quality of Todos Santos Bay, northwestern Baja California, Mexico.

Mar Pollut Bull 2021 Dec 20;173(Pt B):113148. Epub 2021 Nov 20.

Universidad Autónoma de Baja California, Facultad de Ciencias Marinas, C.P. 22860 Ensenada, B.C., Mexico. Electronic address:

Coastal pollution levels in Todos Santos Bay (TSB) recreational beaches have increased in recent years due to the uncontrolled disposal of wastewater and pollutants to the coast by human activities (urbanization and tourism). In this work, the concentration of water quality parameters along the coast of TSB was evaluated from February 2012 to January 2013. Sampling was carried out at monthly intervals on 29 beach locations. Read More

View Article and Full-Text PDF
December 2021

A novel approach to baseline water quality assessment at local and catchment scale: a case study from Berambadi, India.

Environ Monit Assess 2021 Nov 23;193(12):837. Epub 2021 Nov 23.

Division of Infrastructure and Environment, James Watt School of Engineering, University of Glasgow, Glasgow, G12 8LT, UK.

Optimal design and maintenance are necessary for the sustainability of wastewater treatment systems. In this study, we present the outcome of a novel approach to baseline assessment conducted prior to the design and deployment of a decentralized wastewater treatment system at a school in rural India. The baseline water quality monitoring protocol was deployed to assess (a) the quality and quantity of wastewater (greywater and blackwater) flows from the school and (b) the status of surface water and groundwater quality in the catchment. Read More

View Article and Full-Text PDF
November 2021

Prevalence of multidrug-resistant bacteria associated with polymicrobial infections.

J Infect Public Health 2021 Nov 11. Epub 2021 Nov 11.

Department of Botany, Holycross College, Nagercoil, Tamil Nadu, India.

Background: Wounds remain the most important cause of postoperative mortality and morbidity and generate considerable additional social and healthcare costs. Most wounds are caused by various coliforms, Enterococcus fecalis, Proteus sp., and multidrug resistant Staphylococcus aureus. Read More

View Article and Full-Text PDF
November 2021

Survey of water supply and assessment of groundwater quality in the suburban communes of Selembao and Kimbanseke, Kinshasa in Democratic Republic of the Congo.

Sustain Water Resour Manag 2022 10;8(1). Epub 2021 Nov 10.

Department of Chemistry, Faculty of Science, University of Kinshasa, B.P. 190, Kinshasa XI, Democratic Republic of the Congo.

In many suburban municipalities of developing countries, the household drinking water comes mainly from groundwater including, wells, streams and springs. These sources are vulnerable because poor hygienic conditions and sanitation prevail causing persistence and recurrent waterborne diseases. In this research, a survey study on water resource use and an epidemiological survey of waterborne diseases were conducted among users of water points and medical institutions in suburban communes of Selembao and Kimbanseke (Kinshasa, the Democratic Republic of the Congo). Read More

View Article and Full-Text PDF
November 2021

A case analysis of a mass treatment approach to control GI and water-related conditions in Sudan.

BMC Public Health 2021 11 17;21(1):2111. Epub 2021 Nov 17.

University of Gezira, Wad Madani, Sudan.

Background: The efficiency of mass chlorination in controlling diarrheal diseases during acute emergencies has been extensively reported in literature. However, long-term crises received unparallel attention. Researchers have previously carried out a trial that investigated the impact of using chemical means to treat water reservoirs of Um-Baddah Nevachah, a refugee camp located in the western outskirts of Khartoum, Sudan. Read More

View Article and Full-Text PDF
November 2021

Seasonality of enteric viruses in groundwater-derived public water sources.

Water Res 2021 Oct 28;207:117813. Epub 2021 Oct 28.

Department of Civil and Environmental Engineering, University of Surrey, Guildford GU2 7XH, UK.

We investigated the seasonal prevalence of seven enteric viruses in groundwater-derived public water sources distributed across the dominant aquifers of England. Sampling targeted four periods in the hydrological cycle with typically varying microbial risks, as indicated using a decade of Escherichia coli prevalence data. Viruses were concentrated onsite by filtration of raw groundwater, and extracted nucleic acid (NA) was amplified by qPCR or RT-qPCR. Read More

View Article and Full-Text PDF
October 2021

Hybrid constructed wetlands integrated with microbial fuel cells and reactive bed filter for wastewater treatment and bioelectricity generation.

Environ Sci Pollut Res Int 2021 Nov 15. Epub 2021 Nov 15.

Postgraduate Program in Environmental Technology, University of Santa Cruz do Sul (UNISC), Avenida Independência, 2293, Santa Cruz do Sul, Rio Grande do Sul, 96815-900, Brazil.

The present study aimed to develop a pilot-scale integrated system composed of anaerobic biofilter (AF), a floating treatment wetland (FTW) unit, and a vertical flow constructed wetland coupled with a microbial fuel cell (CW-MFC) and a reactive bed filter (RBF) for simultaneously decentralized urban wastewater treatment and bioelectricity generation. The first treatment stage (AF) had 1450 L and two compartments: a settler and a second one filled with plastic conduits. The two CWs (1000 L each) were vegetated with mixed plant species, the first supported in a buoyant expanded polyethylene foam and the second (CW-MFC) filled with pebbles and gravel, whereas the RBF unit was filled with P adsorbent material (light expanded clay aggregate, or LECA) and sand. Read More

View Article and Full-Text PDF
November 2021

Comparison of hand hygiene compliance self-assessment and microbiological hand contamination among healthcare workers in Mwanza region, Tanzania.

Infect Prev Pract 2021 Dec 23;3(4):100181. Epub 2021 Oct 23.

Department of Microbiology and Immunology, Weill Bugando School of Medicine, Catholic University of Health and Allied Sciences, Mwanza, Tanzania.

Background: Compliance with hand hygiene (HH) practices remains a major challenge in preventing healthcare-associated infections (HCAI). Little is known whether self-reported HH compliance reflects the level of hand contamination microbiologically as a guide for specific infection prevention and control (IPC) measures.

Methods: A cross-sectional study was conducted between July and September 2019 involving 18 healthcare facilities (HCF) in Mwanza region, Tanzania. Read More

View Article and Full-Text PDF
December 2021

Sanitary sewage disinfection with ultraviolet radiation and ultrasound.

Int J Environ Sci Technol (Tehran) 2021 Nov 8:1-8. Epub 2021 Nov 8.

Graduate Program in Environmental Engineering, Federal University of Santa Maria-UFSM, 1000, Roraima Avenue, Santa Maria, RS 97105-900 Brazil.

Currently, the world is facing a horrible situation due to SARS-CoV-2. Though its RNA was found in wastewater, there are still no studies on RNA contamination detected in sewage. Hence, a possible treatment of sewage is suggested in this work. Read More

View Article and Full-Text PDF
November 2021

A multistep enrichment process with custom growth medium improves resuscitation of chlorine-stressed coliforms from secondary sewage effluents.

J Microbiol Methods 2021 Nov 12;192:106364. Epub 2021 Nov 12.

Chemical and Biological Signatures Group, National Security Directorate, Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99352, USA. Electronic address:

Resuscitation and detection of stressed total coliforms in chlorinated water samples is needed to assess and prevent health effects from adverse exposure. In this study, we report that the addition of a growth enhancer mix consisting of trehalose, sodium pyruvate, magnesium chloride, and 1× trace mineral supplement improved growth of microorganisms from chlorinated secondary effluent in the base medium with Colilert-18. Improving growth of chlorine stressed microorganisms from secondary effluent is crucial to decreased detection time from 18 to 8 h. Read More

View Article and Full-Text PDF
November 2021

An integrative water quality evaluation in two surface water bodies from a tropical agricultural region in Cartago, Costa Rica.

Environ Sci Pollut Res Int 2021 Nov 13. Epub 2021 Nov 13.

Centro de Investigación en Contaminación Ambiental (CICA), Universidad de Costa Rica, 2060, San José, Costa Rica.

A monitoring study was carried out in two micro-catchments in the Reventazón basin, in Northern Cartago, Costa Rica; pesticide occurrence and water quality were analyzed. Twelve pesticides were detected, five insecticides (chlorpyrifos, carbofuran, cypermethrin, imidacloprid, and oxamyl), four fungicides (carbendazim, imazalil, metalaxyl, and thiabendazole), and three herbicides (diuron, linuron, and terbutryn); eight of them presented risk quotients RQ >1, which implies a high risk for the environment. The water quality evaluation included fourteen physicochemical and microbiological parameters, out of which thermotolerant coliforms, nitrate, and total phosphorus exceeded a selected threshold value in every sample. Read More

View Article and Full-Text PDF
November 2021

Risk assessment and water safety planning for rural water supply in Uttarakhand, India.

Environ Monit Assess 2021 Nov 12;193(12):795. Epub 2021 Nov 12.

Department of Chemistry, DAV (PG) College, Dehradun, Uttarakhand, 248001, India.

A water safety plan (WSP) has been developed for rural water supply in Dehradun district, Uttarakhand, India. Four public water utilities were chosen to demonstrate the application of WSP in improving the rural drinking water quality along with improved sanitation. Hazard identification and risk assessment carried out identified 10 hazardous events at all four utilities. Read More

View Article and Full-Text PDF
November 2021

Hydrogeochemical characteristics of surface and groundwater: suitability for human consumption and irrigated agriculture purposes in Suruliyar sub basin, South India.

Environ Geochem Health 2021 Nov 12. Epub 2021 Nov 12.

Water Management (Agriculture Division), CWRDM, Kunnamangalam, Kerala, 673571, India.

The Suruliyar sub basin in Tamil Nadu, India, was monitored for the assessment of water and soil quality. Surface water, groundwater, and soil samples were collected during the pre-monsoon (June 2016) and post-monsoon (December 2016) seasons within the sub basin area and analyzed for various physical, chemical, and biological properties, namely, pH, electrical conductivity, total dissolved solids (TDS), calcium, magnesium, sodium, nitrate, sulfate, fluoride, chloride, biological oxygen demand, chemical oxygen demand, and total and fecal coliform. All the values were compared with Indian and global standards, and the values for each parameter were within the permissible limits. Read More

View Article and Full-Text PDF
November 2021

Operational performance of corncobs/sawdust biofilters coupled to microbial fuel cells treating domestic wastewater.

Sci Total Environ 2021 Oct 29:151115. Epub 2021 Oct 29.

Escuela de Ciencias Químicas, Pontificia Universidad Católica del Ecuador, Av. 12 de octubre 1076, Apartado 17-01-2184, Ecuador.

Biofilters coupled to microbial fuel cells (MFCs) are the most integral treatment technology that generate water-energy nexus for rural zones sanitation. Moreover, biofilters coupled to MFCs, using organic residues as bed filter have not been studied. Therefore, the aim of this study was comparatively to evaluate biofilters based on corncobs/sawdust coupled to MFCs treating domestic wastewater. Read More

View Article and Full-Text PDF
October 2021

Investigation of water quality and its spatial distribution in the Kor River basin, Fars province, Iran.

Environ Res 2021 Oct 29:112294. Epub 2021 Oct 29.

Department of Civil and Environmental Engineering, Case Western Reserve University, Cleveland, OH, 44106, United States. Electronic address:

As one of the largest rivers in the southwest of Iran, the Kor River plays an important role in local economy and ecosystem. However, the rapid development of industry has caused significant pollution in this river in recent years. Despite of a number of studies reported on this river regarding water pollution, few have conducted a comprehensive investigation of a wide range of water quality parameters to map the current pollution status. Read More

View Article and Full-Text PDF
October 2021

Antimicrobial, immunological and biochemical effects of florfenicol and garlic (Allium sativum) on rabbits infected with Escherichia coli serotype O55: H7.

Vet Res Commun 2021 Nov 10. Epub 2021 Nov 10.

Department of Poultry Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt.

Florfenicol (FFC) is a synthetic broad-spectrum antibiotic and garlic has a bactericidal action against coliforms. This study was carried out to compare the antimicrobial, immunological and biochemical effects of florfenicol and garlic, for their ability to treat enteropathogenic Escherichia coli serotype O55: H7 infection in rabbits. Four groups (G1-G4) were included. Read More

View Article and Full-Text PDF
November 2021

Growth performance, internal organ traits, intestinal morphology, and microbial population of broiler chickens fed quinoa seed-based diets with phytase or protease supplements and their combination.

Trop Anim Health Prod 2021 Nov 6;53(6):535. Epub 2021 Nov 6.

Department of Animal Science, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran.

The aim of this study was to evaluate the effects of quinoa seed-based diets with phytase and protease enzymes, individually or in combination, on the productive performance, internal organs, microbiota activity, and intestinal morphology of broiler chickens. A total of 250 1-day-old broiler chicks (ROSS 308) were randomly distributed into five treatments with each five replicate pens of 10 birds in a 42-day trial. Dietary treatments were a conventional diet (CC) based on a corn-soybean meal or an experimental diet (EC) which contained 150 g/kg of quinoa seed. Read More

View Article and Full-Text PDF
November 2021

Identification of surrogates for rapid monitoring of microbial inactivation by ozone for water reuse: A pilot-scale study.

J Hazard Mater 2021 Oct 22;424(Pt C):127567. Epub 2021 Oct 22.

Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China; Beijing Laboratory for Environmental Frontier Technologies, Beijing 100084, PR China; Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Tsinghua-Berkeley Shenzhen Institute, Shenzhen 518055, PR China.

The complex contaminants in reclaimed water sources and delayed feedback of microbial detection have brought tremendous challenges to disinfection process control. The identification of sensitive and online surrogates for indicating microbial inactivation efficacy is vital to evaluate and optimize the disinfection technologies and processes. This study analyzes the inactivation of microbial indicators during ozone disinfection at a pilot-scale study over 5 months. Read More

View Article and Full-Text PDF
October 2021

Integrated probabilistic-fuzzy synthetic evaluation of drinking water quality in rural and remote communities.

J Environ Manage 2022 Jan 15;301:113937. Epub 2021 Oct 15.

School of Engineering, University of British Columbia, Okanagan, 3333 University Way, Kelowna, BC, V1V 1V7, Canada. Electronic address:

An integrated probabilistic-fuzzy synthetic evaluation (PFSE) approach was developed for assessing drinking water quality in rural and remote communities (RRCs) through the lens of health risks and aesthetic impacts. The probabilistic health risk assessment can handle aleatory uncertainty raised by the variation of contaminant concentrations, and fuzzy synthetic evaluation (FSE) can address vagueness and ambiguity in human perception of risks and aesthetic impacts. The PFSE approach was applied to five RRCs in British Columbia, Canada where different drinking water quality issues, including high metal(loids) concentrations, the presence of coliforms, and poor aesthetics were reported. Read More

View Article and Full-Text PDF
January 2022

Differences in the gut microbiota composition of rats fed with soybean protein and their derived peptides.

J Food Sci 2021 Nov 3. Epub 2021 Nov 3.

Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, National Soybean Processing Industry Technology Innovation Center, Beijing Technology and Business University, Beijing, China.

Current studies regarding the effect of different nitrogen sources on gut microbiota have thus far disregarded the ability of probiotics and coliforms to compete for protein. This study aimed to investigate the differences in the utilization of soybean protein (SPro) and its derived peptides (SPep) by the gut microbiota of Sprague Dawley (SD) rats. The SPro and SPep prepared in this study showed extensive SPro molecular weight distribution, while that of SPep was minimal, ranging between 150 and 1000 Da and primarily consisting of two to five amino acids. Read More

View Article and Full-Text PDF
November 2021

Quantitative microbial risk assessment associated with ready-to-eat salads following the application of farmyard manure and slurry or anaerobic digestate to arable lands.

Sci Total Environ 2022 Feb 27;806(Pt 3):151227. Epub 2021 Oct 27.

University College Dublin, School of Biosystems and Food Engineering, Belfield, Dublin 4, Ireland. Electronic address:

Farmyard manure and slurry (FYM&S) and anaerobic digestate are potentially valuable soil conditioners providing important nutrients for plant development and growth. However, these organic fertilisers may pose a microbial health risk to humans. A quantitative microbial risk assessment (QMRA) model was developed to investigate the potential human exposure to pathogens following the application of FYM&S and digestate to agricultural land. Read More

View Article and Full-Text PDF
February 2022

Bacterial pathogens associated with clinical and subclinical mastitis in a Mediterranean pasture-based dairy production system of Australia.

Res Vet Sci 2021 Dec 7;141:103-109. Epub 2021 Oct 7.

College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China; Centre for Animal Production and Health, Future Foods Institute, Murdoch University, 90 South Street, Murdoch 6150, WA, Australia. Electronic address:

Mastitis is an economically important production disease in the dairy industry worldwide. There is limited information on the aetiology of clinical mastitis (CM) and subclinical mastitis (SCM) in Australia's Mediterranean pasture-based production system. A prospective study was conducted in the south-west region of Western Australia to characterise the bacterial pathogens associated with CM and SCM cases and their associated antimicrobial susceptibility profiles. Read More

View Article and Full-Text PDF
December 2021