Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 397 for “"CFU"”.
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Water quality and business aspects of sachet-vended water in Tamale, Ghana
… sachet-water sample had E.coli counts of 5 CFU/100ml and 49 CFU/100ml respectively. Almost half (47%) of the factory-produced sachet-water samples had some total coliforms (range from 1 CFU/100ml to 115 CFU/100ml). All the 15 hand-tied sachet-water samples had total coliforms (range from 4 …
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The Use of Lactic Acid Bacteria to Control the Growth of Foodborne Pathogens on Fresh-Cut Fruits and Sprout Vegetables
… <em>Salmonella </em>spp. (each at 10<sup>4 </sup>CFU/g) were treated with <em>Lb. plantarum</em> alone and in combination with <em>Pediococcus acidophilus </em>and <em>P. pentosaceus </em>(LPP)<em> </em>(10<sup>7 </sup>CFU/g) while alfalfa seeds were inoculated with <em>L. monocytogenes</em> and …
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The Applicability and Use of Waterless Hand Sanitizer in Veterinary and Animal Agricultural Settings
… use, HBC ranged from less than to 20 to 48,800 CFU/ml with a geometric mean of 6,926 CFU/ml. Counts after WHS use ranged from less than 20 to 23,400 with a geometric mean of 1,152 CFU/ml. Differences in before and after ranged from -4,000 to 48,200 CFU/ml with a median of 9,700 CFU/ml. The …
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Microbial risk assessment for recreational use of the Kranji Reservoir, Singapore
… were 13.3 Enterococci colony forming units (CFU) per 100 ml water and 1400 Enterococci CFU per gram sediment. Based on the strengths and weaknesses of available statistics-based risk models, a model by Wiedenmann was chosen based on the flexibility of the model and the quality of the …
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Aderência in vitro de bactérias bucais a diferentes tipos de piercings linguais
… 160 piercings to count the Colony Forming Units (CFU) and 32 piercings for analysis in Scanning Electron Microscope (SEM). Of these, 96 (24 of each type) were individually incubated in 5 mL BHI (Brain Heart Infusion) broth and 50 μL of inoculum, at 37°C/24h. The others 96 piercings formed the …
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Development of Immunomagnetic Capture (IMC) Based Techniques For the Detection of Salmonella in Poultry Carcass Rinse Fluid
… without enrichment, could detect at least 102 cfu/ml of S. Typhimurium in broiler carcass rinse fluid (CRF) samples. IMC-ELISA, IMC-PCR, and IMC-Taqman® PCR were initially tested using 0 to 106 cfu/ml of pure culture S. Typhimurium. Each detection method was tested using artificially …
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Potensi Lactobacillus plantarum sebagai probiotik secara in vitro: kajian ketahanan terhadap asam, garam empedu dan penghambatan terhadap bakteri patogen.
… plantarum yang tumbuh pada pH 2 adalah 2,7 . 107 cfu/ml, pada pH 3 sebanyak 3. 107 cfu/ml dan pada pH 4 sebanyak 4,9 . 107 cfu/ml, sedangkan pada kontrol sebanyak 5,3. 108 cfu/ml. Hasil uji ketahanan Lactobacillus plantarum terhadap garam empedu 0,3% (b/v) menunjukkan bahwa Lactobacillus plantarum …
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Ethanol Mist to Control Salmonella enterica serovar Newport on Fresh Tomato and Cantaloupe Surfaces
… enterica Newport to a concentration of log 7 CFU/tomato and log 7 CFU/cm2 respectively. Application time (5, 10, and 15 sec), dry vs. wet surface, and stem scar contamination were evaluated on tomatoes, while only application time was evaluated on cantaloupe. Application of ethanol mist for 10 …
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High Hydrostatic Pressure Processing Reduces Salmonella enterica from Diced and Whole Tomatoes
… Five ml portions of broth containing 8 log CFU/ml of one of the four serovars (nalidixic acid resistant) were packaged in sterile stomacher bags and subjected to one of three different pressures (350, 450, or 550 MPa) for 120s. Samples were enumerated by surface plating onto tryptic soy agar …
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Fate of Salmonella and Listeria monocytogenes in different frozen produce commodities
… of Listeria monocytogenes at ~5.0 log10 CFU/g and stored at -18±2°C. Salmonella was enumerated at 0, 0.02, 1, 3, 6, 10, 15, 30, 60 and 90 days post inoculation (dpi), after storage at -18±2°C. Listeria monocytogenes monitoring followed the same structure, with an additional timepoint at …
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Effect of Electrostatic Spraying of Food-Grade Organic and Inorganic Acids, and Grape Seed Extract on Salmonella Typhimurium and Escherichia coli O157:H7 on Spinach and Iceberg Lettuce
… to reduce <em>S</em>.T. on spinach by 4.3 log CFU/g and 3.3 log CFU/g, respectively, when sprayed electrostatically. When combined with LA (3%), MA (3%) showed 2.1-4.0 logs CFU/g reduction of <em>E.c.</em> between the days 1 and 14 on spinach and 1.1-2.5 logs CFU/g reduction on lettuce. The …
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Impacts of inoculation strategy on survival of Salmonella enterica and Enterococcus faecium at low water activity on dry peppercorn and cumin seeds
… resulted from the biofilm-inclusion (-0.04 CFU/g LR) and agar grown (-0.75 CFU/g LR) methods on peppercorn and the biofilm inclusion method (-0.28 CFU/g LR) on cumin. Log reductions of Enterococcus faecium (-0.02 CFU/g LR biofilm-inclusion-peppercorn, -0.19 CFU/g LR agar-grown-peppercorn, …
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Influence of high pressure processing on populations of Salmonella enterica in fresh green-mature tomato fruits and subsequent ripening
… broth to a concentration of approximately 8 log CFU/ml and subjected to 350, 450, and 550 MPa for 120 s. Samples were serially diluted in peptone water, and surface plated onto tryptic soy agar supplemented with nalidixic acid (50 ppm; TSAN) and incubated at 35°C for 48 h. Reductions of 5.64, …
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Efficacy of Detergent Rinse Agents to Remove Salmonella and Shigella spp. from the Surface of Fresh Produce
… leaf lettuce were dip inoculated in a 6-6.5 LOG CFU/ml cocktail of nalidixic acid resistant organisms. After drying, produce were rinsed with either 0.1 % sodium lauryl sulfate (SLS), 0.1% Tween 80, or water at different temperatures. Rinse solutions were plated onto Tryptic Soy agar supplemented …
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Validation of the Fung double tube to enumerate Clostridium perfringens from the intestinal contents of broiler chickens raised on different diets
… six treatments. The FDT with medium C (5.35 log CFU/g) had significantly (P<0.05) higher C. perfringens counts than any other media/method combination. The objective of the second and third trials was to determine the effect of diet type on the population of C. perfringens in broiler intestines …
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Development of a Biofilm Model for Evaluating Poultry Drinking Water Sanitation Procedures
… using low microbial content water (< 3 log10 APC cfu/ml); and experiments 2, 3 and 4 utilized higher bacteria content water (> 3 log10 APC cfu/ml) to produce biofilm in test coupons. Experiment 4 also included seeding the avian pathogenic E. coli sero group O2 strain in pathogen free water …
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Microbiological characteristics of pork carcasses and vacuum packaged blade steaks during storage at 0±1°C
… had the highest (P ≤ 0.05) APC with 1.21 log CFU/cm². There was no carcass location or day effect for EB or mold populations, but there was a carcass location and day effect for yeast populations. The detection limit (DL) for EB and yeast and mold populations on pork carcass samples (n = 240) …
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THE EFFECTIVENESS OF BEST MANAGEMENT PRACTICES ON WATER QUALITY IN THE ATTOYAC BAYOU WATERSHED OF EAST TEXAS
… standard for primary contact reaction (126 CFU/100 mL). Subwatersheds with the highest E. coli, nutrient, and sediment loading were BIO, NC, and WC. For all subwatersheds, E. coli mass loading was higher in the winter and spring, with nutrient and sediment mass loading higher in the spring …
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Effect of cinnamic acid-cyclodextrin inclusion complexes on populations of Escherichia coli O157:H7 and Salmonella enterica in fruit juices
… inoculated with a Salmonella enterica (7 log CFU/mL) and apple cider inoculated with Escherichia coli O157:H7 (7 log CFU/mL). Cider and orange juice samples were extracted on day 0 and at 24 h intervals for seven days and spread plated onto Tryptic Soy Agar. Cinnamic acid was effective for …
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Effect of storage temperatures on the microbiological quality, safety, and viability of quahog clams, Mercenaria mercenaria
… APCs containing 2% NaCI ranged from 104 to 108 CFU/g, and during the winter, mesophilic APCs with salt ranged from < 100 ESPC to 104 CFU/g. Comparatively, during the summer, mesophilic APCs containing no added NaCI ranged from < 100 ESPC to 105 CFU/g, and during the winter, APCs without salt …
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