oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 28 )

2018 ( 78 )

2017 ( 82 )

2016 ( 96 )

Custom range...

Search Results: 1 - 10 of 3939 matches for " Coliform Bacteria "
All listed articles are free for downloading (OA Articles)
Page 1 /3939
Display every page Item
The Quality and Health Implications of Urban Irrigation Water Used for Vegetable Production in the Accra Metropolis  [PDF]
Mark O. Akrong, Joseph A. Ampofo, Seth K. A. Danso
Journal of Environmental Protection (JEP) , 2012, DOI: 10.4236/jep.2012.311167
Abstract: The quality of irrigation water from different sources used by urban farmers in the Accra Metropolis was investigated. These were, tap water stored in dugout, surface water (from stream) and wastewater in drains. The samples were analysed for their bacteriological, physical and chemical qualities using standard methods. Analytical Profile Index (API) identification system was used to characterize and identify the bacterial species isolated in the samples. The results showed that heavy metal concentrations in the samples were within the FAO/WHO recommended limits for irrigation. The concentrations of highly toxic Lead and Cadmium were even below detection limit. Total and faecal coliform bacteria loads in all three potential irrigation water sources were above the WHO recommended limit for irrigation. Different bacteria species belonging to seven genera were identified in the three irrigation water sources. These included Citrobacter, Chryseomonas, Enterobacter, Klebseila, Proteus, Providencia, Pseudomonas. Generally, the most dominant bacterial species were Pseudomonas aeruginosa and Chryseomonas luteola. Some of these bacteria spp. can pose a health threat to farmers especially those who have challenges with their health and immune system. For example, infection with some of the bacteria species such as Pseudomonas aeruginosa in patients with cystic fibrosis is known to be deadly over periods of time.
DEVELOPMENT OF NEW MEDIUM TERMED ECOL FOR DETECTION OF ESCHERICHIA COLI
M.K. Sharifi-Yazdi;C. Azimi
Iranian Journal of Public Health , 1998,
Abstract: A new medium, termed Ecol was developed for the detection and enumeration of E. coli. The selective properties of Ecol medium for the detection of E.coli from mixed culture in wastewater was tested and compared with conventional coliform media at 37°C and 44°C. Results clearly showed that ECOL medium was enable to direct confirmation of E.coli to be carried out by the indole reaction. The results indicated that this was an excellent single step medium for E.coli enumeration by the most probable number procedure.
Study of the main microbiological traits in Romanian buffalo milk
Aurelia Coroian,Cristian O. Coroian,Dan C. Vodnar,Monica Trif
Human & Veterinary Medicine , 2010,
Abstract: In this study have been analyzed a number of 42 buffalo milk samples, which have beenhighlighted following parameters: coliform bacteria, total number of yeasts and moulds, total number ofanaerobic mesophyl germs, Salmonella, coagulase-positive Staphylococcus, Bacillus cereus. Further,samples of buffalo milk were analyzed according to lactation to the Axio Observer microscope. Thesemeasurements were the basis for highlighting the quality of buffalo milk. Salmonella, coagulase-positiveStaphylococcus and Bacillus cereus were absent.
Microbial Load (Bacteria, Coliform and Mould Count/Flora) of Some Common Hot Smoked Freshwater Fish Species Using Different Packaging Materials  [PDF]
Olusegun Ayodele Oyelese, Jacob Oyeleye Oyedokun
Food and Nutrition Sciences (FNS) , 2013, DOI: 10.4236/fns.2013.412154
Abstract:

Three different packaging materials of (37 cm × 25 cm) size (Sealed Transparent Polythene Bag (STPB) Sealed Paper Bag (SPB) (Brown envelope), Open Mouth Polythene Bag (OMPB) (Black incolour)) were used for Oreochromisniloticus (O), Clariasgariepinus (C) and Mormyrusrume (M). Twenty fish samples per species (averaging 250 gm) were hot smoked dried whole for 36 hours at an average temperature of 100?C. Packaged hot at the rate of 6 fishes per package for each species (three packs for each packaging treatment i.e. 18 pieces were packed while the remaining 2 pieces were used for initial bacteria load and microbial load). Microbial load (Total Viable Count (TVC), Total Coliform Count (TCC) and Total Fungi Count (TFC)) for the fresh fish was initial hot smoked and finally at the end of 12 weeks was monitored. The TVC (bacterial load) of O. niloticus dropped from (10.6 - 8.4) × 104 (fresh state-hot smoked) and M. rume (9.8 - 7.0) × 104, while C. gariepinus slightly increased from (12.4 - 12.6) × 104. After hot smoking, highest TVC of 8.6 × 104 (OMPBC), 8.3 × 104 (SPBC) and 8.2 × 104 (STPBC) were recorded in C. gariepinus among the 9 packag- ing at 12 weeks. However highest tendency for heavy TVC is in all OMPB with highest bacteria load in the OMPBC (8.6 × 104), 7.6 × 104 (OMPBO) and

Assessing the East Bay of Galveston Bay, Texas for Coliform Bacteria in Recreational Water  [PDF]
Tommy Quach, Luis Colon, Akintayo Akinrinlola, Jesse Bell, Sonya Good
Open Journal of Marine Science (OJMS) , 2016, DOI: 10.4236/ojms.2016.64039
Abstract: The Galveston Bay beach is a widely used recreational area that remains a concern in terms of water quality. There are many factors that contribute to its pollution such as fecal matter entering the bay due to overflow of the sewage system and run offs.? Thus, evaluating the water quality for fecal matter and other pollutants is continuously monitored by citizen scientists and research groups throughout the Galveston Bay. The investigation utilizes the colorimetric response of coliform at three test sites along the East Bay of Galveston. Each response is positive for coliform that may indicate the presence of fecal matter. Other scientists have denoted the presence of fecal matter in the Galveston Bay at two sites using enterococci indicator which may be more associated with human fecal matter. The analyses show that the recreational water is likely not a threat since its levels were low. However, the need for analyses based on EPA protocols and standards is necessary to better access water pollution due to fecal matter in the Galveston Bay area.
A microbiological assessment of the surface water quality in the Bodva river drainage area
Mária Ko??ová,Barbora Onderková,Zdenka Ma?a?ová,?udmila Si?áková
Acta Montanistica Slovaca , 2005,
Abstract: This paper deals with the surface water quality assessment in the partial drainage area of the Bodva river and its tributaries. The water quality in the sampled areas ranged between polluted and strongly polluted. The main cause of the pollution is the increased abundance of coliform and thermo-tolerant coliform bacteria, and fecal streptococci. The reason the increase in their abundance is the dumping of the household waste water containing excrements and animal remains, and the unsatisfactorily treated water from the water treatment stations.
THE BACTERIOLOGICAL AND PHYSICO-CHEMICAL STUDIES ON OLUMIRIN WATERFALL ERIN- IJESHA, OSUN STATE, NIGERIA
Adebowale Odeyemi,Emmanuel Fagbohun,Oluwakemi Akindolapo
Journal of Microbiology, Biotechnology and Food Sciences , 2011, DOI: 13385178
Abstract: The potability and qualities of Olumirin waterfall, Erin-Ijesa were investigated by determining the total bacteria and coliform count with antibiotic susceptibility of the isolated bacteria and physico-chemical qualities of the water samples. Total bacteria and coliform enumeration were determined using pour plating and multiple tube techniques, the antibiotic susceptibility were carried out using disc diffusion method, while physico-chemical and mineral studies were also carried out using standard methods. The mean total viable count of the water samples ranged 14.8 x 102 CFU.ml-1 - 21.3 x 103 CFU.ml-1 while the coliform count ranged 13 -175 MPN/100ml. The identified bacteria isolates and their percentage distribution were E.coli (43.1%), Klebsiella spp (20.7%), Proteus spp (12.1%), Salmonella spp (6.99%), Pseudomonas spp (5.17%), Shigella spp (6.9%), and Enterococcus spp (5.17 %). Antibiotic resistance shown by bacteria isolates were exhibited as follow; Nalixidic acid (31%), Ampicilin (76%), Cotrimoxazole (60%), Gentamicin (19%), Nitrofurantoin (24%), Colitin (48%), Streptomycin (34%) and tetracycline (52%). 82.8% of the isolate exhibited multiple antibiotic resistance. The physico-chemical analysis also revealed the presence of some mineral elements in the water samples. The mineral value of the water samples include; magnesium (84.8 - 93.4) mg.L-1, phosphate (12.6 - 17.1) mg.L-1, sodium (47.8 - 87.6) mg.L-1, potassium (76.6 - 104.5) mg.L-1, chloride (59.0 - 90.2) mg.L-1, zinc (0.75 - 1.82) mg.L-1, lead (0.12 - 0.33) mg.L-1, iron (0.52 - 0.60) mg.L-1, copper (0.12 - 0.27) mg.L-1 while nickel and arsenic were not detected in any of the water samples. Comparing the experimental results with the international water standard for natural water, the waterfall is not fit for consumption or for any domestic purpose unless being treated. Also, problems that may arise from the resistance bacteria strains can be tackled while the new antibiotics can also be developed.
Physico-Chemical and Microbial Quality of Locally Composted and Imported Green Waste Composts in Oman  [PDF]
Saifeldin A. F. El-Nagerabi, Abdulkadir E. Elshafie, Saif N. Al-Bahry, Hasina S. AlRawahi, Huda AlBurashdi
American Journal of Plant Sciences (AJPS) , 2011, DOI: 10.4236/ajps.2011.25079
Abstract: In this work the physical, chemical and microbial properties of four locally composted green waste composts (GWCs) namely Almukhasib, Growers, Plantex, and Super along with four imported GWC (Florabella, Mikskaar, Potgrond, and Shamrock) were studied to evaluate the quality of these composts with the acceptable standards. All composts showed normal physical properties, except the bad smell from sulfur reducing bacteria in Almukhasib, light brown color Plantex and one viable weed seed in Shamrock compost. The germination indexes of the composts comparable to the standard (90%) were 100% for Mikskaar, followed by Shamrock (92%), Florabella (97), Potgrond (95%), Plantex (98%), Growers (77%), and 5% for both Super and Almukhasib. The physical and chemical properties vary considerably as follows: pH 3 - 10.5, 5.1 - 6.5 (standard 5 - 8), electrical conductivity (EC) 0.4 - 10.2 mS·cm-1, 0.8 - 1.8 mS·cm-1(standard 0.0 - 4.0 mS·cm-1), moisture content (MC%) 29% - 43.7%, 64% - 74% (standard 35% - 60%) and water holding capacity (WHC%) 92% - 200% and 400% - 800% for the locally produced and imported composts, respectively. Wide ranges in the chemical properties were expressed as ammonia concentration 512.4 - 1640.1 mg·kg-1, 459.4 - 656.5 mg·kg-1(standard < 500 mg·kg-1), organic matter 17% - 67.6%, and 53.3% - 66.2% (standard 35%) for the locally composted and imported composts, respectively. The concentrations of the heavy metals (Zn, Ni, Pb, Hg, As, Cd, and Cr) were lower than the recommended levels. The average of the bacterial colony forming unit per gram of locally produced and imported composts ranged between 260 - 1740 CFU/g and 330 - 2870 CFU/g, whereas the fungal CFU were 10 - 2800 CFU/g and 27 - 1800 CFU/g, respectively. The most probable number (MPN) for coliform bacteria was 43 - 1100 CFU/g for locally produced composts, and 23 - 480 CFU/g for the imported composts. Therefore, these composts can not be used directly without effective treatment as substrate for plant growth, soil amendment and as biofertilizer.
Nutrient-Induced Growth of Coliform and HPC Bacteria in Drinking-Water Pipes  [PDF]
Patrick Asamoah Sakyi, Roland Asare, Chris Anani, Samuel Boakye Dampare
Journal of Environmental Protection (JEP) , 2012, DOI: 10.4236/jep.2012.36061
Abstract: We conducted a study on a model drinking water distribution system to evaluate the impact of nutrient in the form of sodium acetate on the growth and survival of coliform and heterotrophic plate count (HPC) bacteria for a maximum of 21 days residence time of water in pipes. Our results show that, besides the nutrient added and the absence of any additional source of contamination and additional supply of nutrient, there was significant growth of the above mentioned bacteria in the pipes and bottles for a couple of days, after which the bacterial population began to decrease. The results indicate that the bacteria used the nutrient to grow and multiply until the nutrient was totally consumed and became depleted in the bulk water phase, after which the bacterial population reached a near stationary level and subsequently declined. This suggests the death of some of the bacteria and their dead cells were used by other bacteria for growth and survival. Using a detection limit of 3.3 CFU/100 mL for the coliforms, the study shows that after sometime, no bacteria were found in the water phase of the pipe, however, the biofilm in the pipes still harbored some of the bacteria. The results have revealed that the bacteria also have the tendency to move from the water phase to the biofilm since the latter provides a more suitable environment for bacteria to thrive on and grow, thus prolonging their survival in the system.
CALIDAD BACTERIOLóGICA DEL AGUA DEL HUMEDAL DE JABOQUE, BOGOTá, COLOMBIA
áVILA DE NAVIA,SARA LILIA; ESTUPI?áN-TORRES,SANDRA MóNICA;
Caldasia , 2006,
Abstract: the water sanitary quality was evaluated of humedal de jaboque, like part of the project ecological restauration of the humedal de jaboque. there were chosen thirteen stations of sampling of the not canalized and canalized zone of the wetland, to evaluate possible temporary changes of the bacteriological quality there were realized four samplings that corresponded to the months of octubre/2004, january, march and june / 2005. the method used for the microbial counts of the water was membrane filtration; the identification of the microorganisms was realized with rapid biochemical tests api-20 and crystal bbl. the enumeration of the groups of bacteria (aeromonas, pseudomonas, clostridium, total coliformes and enterococcus) did not show statistically significant differences between the stations that are in the canalized zone and those of the zone not canalized (anosim, global test, r =-0.027, p> 0.05). to temporary scale the samples threw statistically significant differences between the months of sampling (anosim, global test, r=0.511, p <0.05). for five groups of bacteria analyzed the minor obtained enumeration they happened in october, 2004. the groups of major abundance in the waters of the wetland are the total coliformes, aeromonas and pseudomonas, this behavior is observed both in the canalized zone and in the not canalized one, and in 4 months of the sampling, therefore, these three bacterial groups might be considered to be indicators of the sanitary quality of the water. the waters of humedal de jaboque contain a hight number of total coliformes therefore they must not be used for human and domestic use, agricultural or recreative consumption.
Page 1 /3939
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.