Microbiological quality of a waste stabilization pond effluent used for restricted irrigation in Valle Del Cauca, Colombia

2002 ◽  
Vol 45 (1) ◽  
pp. 139-143 ◽  
Author(s):  
C.A. Madera ◽  
M.R. Peña ◽  
D.D. Mara
Keyword(s):  
Pathogenic Bacteria ◽  
Microbiological Quality ◽  
Salmonella Spp ◽  
Helminth Eggs ◽  
Waste Stabilization ◽  
Shigella Spp ◽  
Field Workers ◽  
Valle Del Cauca ◽  
Final Effluent

This paper discusses the applicability of effluent reuse in agriculture after treatment in a series of anaerobic, facultative and maturation ponds. The WSP system is located in Ginebra municipality, a small town in southwest Colombia. The total HRT is 12 days. Several samples of the final effluent were taken over a 55 day period and were analysed for E.coli, Streptococcus spp. and helminth eggs. Some additional grab samples were taken to determine the presence of pathogenic bacteria such as Salmonella spp. and Shigella spp. The results showed that the system was able to remove 4 log units of E.coli, 1 log unit of Streptococcus spp. and 100% of helminth eggs. Meanwhile, Salmonella spp. were detected in the effluent of the facultative pond whilst Shigella spp. were not detected in any sample. The main species of helminth eggs encountered were Taenia spp., Ascaris spp., Trichuris spp., Hymenolepis nana, H. diminuta and Enterobius vermicularis. Removal efficiencies were satisfactory despite the relatively short HRT. Nevertheless, WHO guidelines were slightly surpassed in the case of E.coli for unrestricted irrigation. The helminth egg value was always below the maximum WHO limit. Hence, this effluent can be safely used for restricted irrigation provided that field workers are protected from direct contact with wastewater given the presence of Salmonella spp. in the facultative pond effluent.

Microbiological Quality of Retail Imported Unprepared Whole Lettuces: A PHLS Food Working Group Study

1999 ◽  
Vol 62 (4) ◽  
pp. 325-328 ◽  
Author(s):  
C. LITTLE ◽  
D. ROBERTS ◽  
E. YOUNGS ◽  
J. de LOUVOIS
Keyword(s):  
Escherichia Coli ◽  
Listeria Monocytogenes ◽  
Microbiological Quality ◽  
Escherichia Coli O157 ◽  
Salmonella Spp ◽  
Shigella Spp ◽  
Natural Microflora ◽  
Production Practices ◽  
Campylobacter Spp

A study of imported unprepared whole lettuces sampled from supermarkets, greengrocers, shops, and market stalls found that all were of acceptable microbiological quality. Twenty-seven out of 151 (18%) imported lettuce samples had Enterobacteriaceae levels of 104 CFU/g or more. However, these bacteria that constitute part of the natural microflora of unprepared vegetables may also be derived from the soil and/or by poor handling. The pathogens, Salmonella spp., Shigella spp., Campylobacter spp., Escherichia coli O157:H7, Vibrio cholerae, Listeria monocytogenes, and also Escherichia coli, an indicator of fecal contamination, were not detected in any imported lettuces, indicating that hygiene, harvesting, and production practices were good. Imported lettuces with Enterobacteriaceae levels of 104 CFU/g or more varied with type of retail premises and the temperature at which the lettuces were displayed. Samples from greengrocers, shops, and market stalls were more likely to contain Enterobacteriaceae at levels in excess of 104 CFU/g than those from supermarkets.

scholarly journals Microbiological analysis of different categories of food items in Dhaka city, Bangladesh

Food Research ◽  
2020 ◽  
Vol 4 (4) ◽  
pp. 1351-1356
Author(s):  
M.A. Uddin ◽  
T. Jabin ◽  
E.A. Siam ◽  
M.T. Afreen ◽  
S.S. Uddin ◽  
...  
Keyword(s):  
Pathogenic Bacteria ◽  
Microbiological Quality ◽  
Bacterial Count ◽  
Food Samples ◽  
Microbiological Analysis ◽  
Dhaka City ◽  
Biochemical Tests ◽  
Salmonella Spp ◽  
Wide Range ◽  
Shigella Spp

Pathogenic microorganisms have been so far reported to contaminate a wide range of foods triggering food borne infections or intoxications including the enteric complications, abdominal pain, fever, bloodstream infection etc. The current study was attempted to observe the microbiological quality of some popular foods collected from different places of Dhaka city, Bangladesh. Conventional cultural, microscopic and biochemical tests were followed for the detection and enumeration of bacterial isolates associated with these food samples. The investigation encompassed detection of total viable bacterial count (TVBC) and presumptive identification of other pathogenic bacteria from these samples. Higher counts of TVBC, coliform, Staphylococcus spp. and fungal load were recorded as 1.46×107 CFU/g (yogurt 1), 4.5×106 CFU/g (yogurt 1), 5.6×105 CFU/g (raw meat) and 2.9×103 CFU/g (sea fish), respectively. Fecal coliform was detected only in one out of ten samples. On the contrary Salmonella spp., Vibrio spp., Shigella spp. and Pseudomonas spp. were completely absent. The antibiogram study showed that all the isolates were sensitive against Kanamycin and Azithromycin. Better sensitivity was also observed against Gentamycin and Ciprofloxacin. Varying degree of antibiotic resistance was also detected against Cefixime, Amikacin and Neomycin. Our study emphasizes the need for continuous monitoring of the various categories of food samples for the safety of public health.

scholarly journals Microbiological quality assessment for drug resistant pathogenic microorganisms from the fresh vended fruit juices

2017 ◽  
Vol 6 (1) ◽  
pp. 7-10 ◽  
Author(s):  
Nurunnahar Akter Lucky ◽  
Ifra Tun Nur ◽  
Tasnia Ahmed
Keyword(s):  
Pathogenic Bacteria ◽  
Microbiological Quality ◽  
Fruit Juices ◽  
Drug Resistant ◽  
Pathogenic Microorganisms ◽  
Salmonella Spp ◽  
Juice Processing ◽  
Nutritive Values ◽  
Shigella Spp ◽  
Vibrio Spp

Fruit juices are very popular due to their freshness and taste. These juices contain all the nutritive values those were present in whole fruits. Fresh juices are healthful drink for people of all ages. But the condition is quite opposite if they become contaminated with pathogenic bacteria during the juice processing. Because of the nutritive properties juice can give enough opportunities to the microorganisms to survive and multiply. In our current study we included eight types of fresh juices to study the microbial load. All the samples were heavily contaminated. Total bacterial and fungal count was found to be up to 3.0×107 cfu/ml and 2.6×106 cfu/ml, respectively. Salmonella spp. and Shigella spp. was present only in one sample. Staphylococcus aureus and Pseudomonas spp. were the most prominent in all of the eight samples. Vibrio spp. was found in six samples ranging from 2.0×102 cfu/ml to 2.9×104 cfu/ml. All the pathogenic isolates showed drug resistance towards the most commonly prescribed antibiotics indicating the risk of difficulty in eradicating diseases.Stamford Journal of Microbiology, Vol.6(1) 2016: 7-10

scholarly journals Study of Microbiological Quality of Fresh Juices Vended in Dhaka City

2019 ◽  
Vol 36 (1) ◽  
pp. 49-53
Author(s):  
Kayseri Afroz ◽  
Tahmina Shammi ◽  
Md Shahidul Kabir
Keyword(s):  
Pathogenic Bacteria ◽  
Bacterial Load ◽  
Microbiological Quality ◽  
Antibiotic Sensitivity ◽  
Multi Drug Resistance ◽  
Dhaka City ◽  
Salmonella Spp ◽  
Street Vendors ◽  
Shigella Spp ◽  
Vibrio Spp

Fresh juices sold by the street vendors are rich in nutritional value and considered as popular drink in Dhaka city .They can be easily contaminated by pathogenic bacteria from unhygienic environment of food preparation area and serves as a potential source of food borne outbreaks. Freshly produced juices of papaya (n = 2), wood apple (n = 2), wood apple and papaya juice (1), lemon (n = 2), and sugarcane (n = 3) were examined for the total bacterial mload, coliforms, Staphylococcus spp., Pseudomonas spp., Vibrio spp., Salmonella spp., and Shigella spp. in this study. Total bacterial load in eight samples were within 0 to 107 cfu/ml, six samples exhibited the presence of staphylococci within the range of 0 to 105 cfu/ml. Total coliforms were detected in six samples which ranged from 104 to 105 cfu/ ml. Vibrio spp., Salmonella spp., and Shigella spp. were isolated by enrichment and selective plating method. Eight samples demonstrated the presence of Vibrio spp. and none of them were positive for Salmonella spp. and Shigella spp. Antibiotic sensitivity patterns were determined against eight isolates using Erythromycin (15μg), Amoxicillin (10 μg), Gentamicin (10 μg), Vancomycin (30 μg), Ciprofloxacin (5 μg), Rifampicin (5 μg), Azithromycin (15 μg), Neomycin (10 μg) and Cefexime (5 μg). Klebsiella sp. (n = 1), Vibrio sp. (n = 2), Enterobacter sp. (n = 1), and Proteus sp. (n = 1) showed multi drug resistance in this study. Contamination of street vended juices pose risks to consumers health and requires adequate attention of appropriate authority. Bangladesh J Microbiol, Volume 36 Number 1 June 2019, pp 49-53

Microbiological Condition of Ground Meat Retailed in Monterrey, Mexico

2001 ◽  
Vol 64 (8) ◽  
pp. 1249-1251 ◽  
Author(s):  
NORMA HEREDIA ◽  
SANTOS GARCÍA ◽  
GUADALUPE ROJAS ◽  
LUCÍA SALAZAR
Keyword(s):  
Microbial Contamination ◽  
Food Poisoning ◽  
Microbiological Quality ◽  
Fecal Coliforms ◽  
Ground Meat ◽  
Fusarium Spp ◽  
Salmonella Spp ◽  
Shigella Spp ◽  
Low Levels

Eighty-eight samples of ground meat were randomly collected from retail stores in the metropolitan area of Monterrey, Mexico, and were analyzed for microbial contamination. Methods were those recommended by the Mexican regulation and/or the U.S. Food and Drug Administration. Over 75% of the samples contained 105 total mesophilic microorganisms per g, and over 40% had 106 total coliforms per g. Fecal coliforms were present in most samples. Staphylococcus aureus was detected in 2.3% of the samples, Salmonella spp. in 11.4%, Listeria spp. in 62%, and L. monocytogenes in 16%. Escherichia coli was detected in 76% of samples, but none was serotype O157:H7. Shigella spp. was not found in any sample. Fusarium spp. and Mucor spp. were detected in 3.4% of the samples, and low levels of yeast in 93%. The microbiological quality of the ground meat analyzed was unsatisfactory, and the product could be an important cause of food poisoning.

scholarly journals Bacteriological quality of cage-cultured abalone Haliotis asinina

2021 ◽  
Vol 4 (2) ◽  
pp. 151-159
Author(s):  
Jhonamie A. Mabuhay-Omar ◽  
Genese Divine B. Cayabo ◽  
Lota A. Creencia
Keyword(s):  
Pathogenic Bacteria ◽  
Microbial Contamination ◽  
Enteric Bacteria ◽  
Salmonella Spp ◽  
Shigella Spp ◽  
Standard Limit ◽  
Normal Standard ◽  
Vibrio Spp ◽  
Foodborne Infections

Abalone is one of the most highly priced seafood delicacies and prepared in various dishes like breaded, soup, steamed and sashimi. They are susceptible to microbial contamination since it is eaten raw sometimes and pathogenic microorganisms can be hazardous to consumers. The present study was carried out to determine the coliform load and the presence of presumptive pathogenic bacteria in cage-cultured abalone in Taytay, Palawan, Philippines. The study was limited to the detection of coliform and some presumptive pathogenic bacteria in different parts of abalone such as gut, gills and mantle. The result of the study revealed that the count of coliforms present in the mantle and gills of abalone falls within the normal standard limit (7 – 21 MPN 100g-1 sample). On the other hand, the gut of abalone was beyond the standard limit (460 MPN 100g-1 sample). Moreover, the gut of abalone harbors Vibrio spp., Salmonella spp. and Shigella spp. and general enteric bacteria. Foodborne infections caused by Vibrio, Salmonella and Shigella are common in Asia.

scholarly journals Microbiological quality of surimi-based imitation crab

2018 ◽  
Vol 51 (2) ◽  
pp. 134
Author(s):  
N. SOULTOS (Ν. ΣΟΥΛΤΟΣ) ◽  
A. ABRAHIM (Α. ΑΜΠΡΑΧΙΜ) ◽  
E. THEOLOGIDOU (Ε. ΘΕΟΛΟΓΙΔΟΥ) ◽  
Pr. KARAIOANNOGLOU (ΠΡ. ΚΑΡΑΪΩΑΝΝΟΓΛΟΥ) ◽  
A. KANSOUZIDOU (Α. ΚΑΝΣΟΥΖΙΔΟΥ)
Keyword(s):  
Escherichia Coli ◽  
Lactic Acid ◽  
Pathogenic Bacteria ◽  
Microbiological Quality ◽  
Storage Period ◽  
Coliform Bacteria ◽  
Processing Plant ◽  
Salmonella Spp ◽  
Microbial Indices

A survey was conducted to evaluate the microbiological quality of sliced, vacuumpacked, surimi-based imitation crab at the retail level, during a 3-month storage period. The roll shaped product imported from France, was sliced and packed in a fishery processing plant in the region of Thessaloniki. Twenty five samples were examined each month, and a total of 75 samples were examined during the three month storage period of the product. Psychrotropic, lactic acid and coliform bacteria, Escherichia coli I, yeasts, Staphylococcus aureus, Salmonella spp., Listeria spp. and Escherichia coli Θ157:Η7, were used as microbial indices, to evaluate the microbiological quality of the product. The following conclusions were derived from the evaluation of the results of the microbiological examinations. 1) The microbiological condition of the crab meat analogs examined on the 15th day of storage, was found satisfactory, since microbial populations were very low, while pathogenic bacteria were not detected in any of the examined samples. 2) The overall microbiological quality of the samples examined at the end of the second month of storage, was also good, since psychrotrophic and lactic acid bacteria exceeded 1Θ7 log cfu/g only in one sample), while coliform bacteria were not detected in 60% of the samples and Escherichia coli I was detected only in one sample. The mean value of the yeasts was 2.84 log cfu/g, while molds were not detected in any of samples examined. 3) The microbiological quality of the samples examined at the end of the three months storage period was not satisfactory, since the microbial indices in the majority of the samples (80%), were rather high. S. aureus, Salmonella spp, Listeria s pp. and E. coli 0157:H7 were not detected in any sample, during the three month storage period.

scholarly journals Assessment of microbiological quality of municipal supplied water within Dhaka Metropolis

2015 ◽  
Vol 4 (1) ◽  
pp. 28-30
Author(s):  
Rabeya Islam ◽  
Ahmad Kamruzzaman Majumder ◽  
Md Monzer Hossain Sarker
Keyword(s):  
Escherichia Coli ◽  
Water Quality ◽  
Health Risks ◽  
Microbiological Quality ◽  
Salmonella Spp ◽  
Shigella Spp ◽  
Pump Stations ◽  
Klebsiella Spp ◽  
Vibrio Spp

Microbiological health risks related to water quality are persisting issues especially in the developing countries. Present study was conducted to evaluate the microbiological quality of municipal supply water of a defined region within Dhaka metropolis, Bangladesh. A total of 20 water samples were collected from 10 selected pump stations and 10 different consuming points to examine the burden of Salmonella spp., Shigella spp., Citrobactor spp., Escherichia coli, Klebsiella spp., Aeromonas spp. and Vibrio spp. The study also included the evaluation of impacts due to the consumption of municipal water. The results revealed that the quality of municipal supplied water was not microbiologically safe for the consumers and also demonstrated the possible commencement of various diseases including diarrhoea, typhoid, dysentery and others. DOI: http://dx.doi.org/10.3329/sjm.v4i1.22758 Stamford Journal of Microbiology, Vol.4(1) 2014: 28-30

scholarly journals Microbiological quality assessment and acceptance of dairy products in Dhaka city

2017 ◽  
Vol 1 (1) ◽  
pp. 58-64
Author(s):  
Md Nur Hossain ◽  
Sanjida Humayun ◽  
Md Zahurul Haque ◽  
Monzur Morshed Ahmed
Keyword(s):  
Public Health ◽  
Dairy Products ◽  
Health Hazard ◽  
Microbiological Quality ◽  
Dhaka City ◽  
Salmonella Spp ◽  
Street Vendor ◽  
Shigella Spp ◽  
A Minor

This investigation was carried out to evaluate the microbiological quality of the processed dairy products including borhani, matha/labang, sweet & sour yoghurt. Dairy products are consumed as desert and popular enough among the people. 50 of the different dairy samples were collected from street vendor and also from some branded shop in Dhaka city. The microbiological quality of the samples were analyzed and monitored according to criteria in European Commission Recommendations 2004/24/EC and 2005/175/EC, BSTI and USPHS. All the dairy products had high microbial load ranged 5.90×105cfu/ml to 8.97×109 cfu/ml. Coliforms were found up to 109 dilutions in milk based drink products Borhani and Labang considered a serious threat to the public health. The mold contamination was much lower in Borhani and Labang compared to yoghurt 7.86×108cfu/ml. Approximately 17% dairy products were contaminated by Salmonella spp. Majority of the dairy products (25.537%,) such as Yogurt, Borhani and Labang were contaminated by Staphylococcus spp. The presence of Listeria monocytogenes found in Yogurt, 7 out of 21 (21.515%) samples were contaminated. A minor number of milk based products were corrupted by Shigella spp. These results emphasize applying and maintaining good hygiene practices throughout the processing chain to prevent contamination and bacterial growth. It was concluded that the presence of some pathogens in milk based products with toxigenicity of some strains pose a health hazard to consumers. Thus, good hygienic practices, good manufacturing practices, HACCP with all other hygienic practices should be applied during processing and distribution for public health safety. Asian Australas. J. Food Saf. Secur. 2017, 1 (1), 58-64

scholarly journals Assessment of the microbiological quality of beverages sold in collective cafes on the campuses of the University of Abomey-Calavi, Benin Republic

2020 ◽  
Author(s):  
Gwladys S. Komagbe ◽  
Philippe Sessou ◽  
François Dossa ◽  
Prudencio Sossa-Minou ◽  
Bernard Taminiau ◽  
...  
Keyword(s):  
Pathogenic Bacteria ◽  
Compliance Rate ◽  
Microbiological Quality ◽  
Resistant Bacteria ◽  
Human Beings ◽  
Salmonella Spp ◽  
Potential Health ◽  
Antibiotic Susceptibility Test ◽  
Aerobic Flora

Fresh juices are highly nutritious foods for human beings, but the inability to observe requirements for their preparation, packaging and storage subjects them to microbial contamination which poses a potential health risk to consumers. The purpose of this study was to evaluate the microbiological quality of beverages sold within the cafes of the campuses of Abomey-Calavi University (Benin). A survey carried out among beverage vendors showed that the sources of contamination were uncontrolled and the raw materials used were of questionable quality as the operators lacked good hygienic practices. Thus, the microbial quality of forty-five samples of four types of beverages sold in these cafes was investigated for mesophilic aerobic flora, Coliforms, Escherichia coli, Staphylococcus aureus, sulfate-reducing anaerobic spores, fungal flora and Salmonella spp. using standardized methods. Then, molecular studies identified the pathogenic strains isolated from the beverages. An antibiotic susceptibility test was performed on the strains identified for the detection of multi-resistant bacteria. These analyses revealed a non-compliance rate of 100% in the analyzed samples. The indicators that caused this non-compliance in the samples were mesophilic aerobic flora, coliforms and fungi. In addition, 85.7% of the samples contained other Enterobacteriaceae including Klebsiella pneumoniae, Morganella morganii, Kluyvera georgiana, Citrobacter murliniae, Yersinia intermedia. While the non-compliance rates of the samples for Salmonella spp and E.coli were 4.4% each, the non-compliance rate for S. aureus was 2.2% with the presence of sometimes multi-resistant pathogenic bacteria. Sellers' awareness of good hygiene practices is important for improving the quality of food sold.

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