Standard Plate Count
Mostrando 1-12 de 53 artigos, teses e dissertações.
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1. The use of lacZ marker in enumeration of Azotobacter chroococcum in carrier based inoculants
A transconjugant of Azotobacter chroococcum Mac 27 tagged with lac Z(A. chroococcum Mac27 L) was found to possess high levels of β-galactosidase activity constitutively.Further, the lac Z marker was found to be stably integrated into the chromosome of the A. chroococcum Mac 27 and did not have any adverse effect on growth, nitrogen fixation and excretion of
Braz. J. Microbiol.. Publicado em: 2014-06
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2. Influence of physical damage and freezing on histamine concentration and microbiological quality of yellowfin tuna during processing
Yellowfin tuna has a high level of free histidine in their muscle, which can lead to histamine formation by microorganisms if temperature abuse occurs during handling and further processing. The objective of this study was to measure levels of histamine in damaged and undamaged thawed muscle to determine the effect of physical damage on the microbial count a
Food Sci. Technol. Publicado em: 02/08/2013
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3. Influência de diferentes tipos de micro-organismos na contagem bacteriana total e de células somáticas por citometria de fluxo e na composição centesimal do leite cru
Bacterial count was made of 179 raw milk samples from different dairy farms of Minas Gerais, Brazil, through the methods of flow cytometry and standard plate count, the reference method. The results obtained by different methods were analyzed by Pearson correlation. There was significant correlation between the values of psychrotrophic and mesophilic counts
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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4. INFLUÊNCIA DA ARTRITE ENCEFALITE CAPRINA (CAE) NAS CARACTERÍSTICAS FÍSICO-QUÍMICA E MICROBIOLÓGICA DO LEITE E ANÁLISE HISTOLÓGICA DA GLÂNDULA MAMÁRIA / INFLUENCE caprine arthritis encephalitis (CAE) IN PHYSICAL-CHEMICAL AND MICROBIOLOGICAL ANALYSIS OF MILK AND histopathologic
The caprine arthritis encephalitis (CAE) is a disease of chronic and debilitating condition caused by a virus the family Retroviridae, subfamily lentivirus and Orthoretrovirinae gender. In transmission, the milk and colostrum from goats infected serving as an important means of virus carrier, but work on the changes in the milk of infected goats are scarce.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/07/2011
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5. Quality of water sources used as drinking water in a Brazilian peri-urban area
The objective of this paper was to assess bacteriological quality of drinking water in a peri-urban area located in the Metropolitan Region of São Paulo, Brazil. A total of 89 water samples were collected from community plastic tanks and 177 water samples from wells were collected bimonthly, from September 2007 to November 2008, for evaluating bacteriologic
Brazilian Journal of Microbiology. Publicado em: 2011-06
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6. Biological activities of a mixture of biosurfactant from Bacillus subtilis and alkaline lipase from Fusarium oxysporum
In this study, we investigate the antimicrobial effects of a mixture of a biosurfactant from Bacillus subtilis and an alkaline lipase from Fusarium oxysporum (AL/BS mix) on several types of microorganisms, as well as their abilities to remove Listeria innocua ATCC 33093 biofilm from stainless steel coupons. The AL/BS mix had a surface tension of around 30 mN
Brazilian Journal of Microbiology. Publicado em: 2011-03
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7. Escherichia coli O157:H7: ocorrência em ambiente de produção de leite na microrregião de Viçosa, adesão em diferentes superfícies e resistência a sanitizantes / Escherichia coli O157:H7: Occurrence in the area where milk that supplies Viçosa is produced, adhesion on several surfaces and resistance to the sanitizing products
The microbiological quality of raw milk has been given great attention due to the high count of mesophilic anaerobics and coliforms, which indicate contamination during processing and storing. Coliforms may also produce enzymes that compromise the quality of dairy products of which the raw milk is destined for. The scope of this work was to study the possibi
Publicado em: 2008
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8. Evaluation of flow cytometry as a method for total bacterial count of raw milk / Validação da metodologia de citometria de fluxo para avaliação da contagem bacteriana do leite cru
The objective of this study was to evaluate the utilization of electronic flow cytometry to determine total bacterial count (TBC) of raw milk. In the first experiment, the effect of storage temperature, sample age and milk preservative type on TBC were evaluated. Additionally, the use of a single milk sample to performance regulatory milk analysis under the
Publicado em: 2005
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9. Proposta de automatização do sistema de contagem de bacterias em leite
The laboratory wares which are used for analysis and which supply the needs of Brazil in the evaluation of the quality of milk are, in most of the cases, imported. The Department of Microelectronics at School of Electrical Engineering, together with Faculty of Food Engineering (both at UNICAMP) are working with a proposal for evaluation of microbiological co
Publicado em: 1999
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10. Multiregional Evaluation of the SimPlate Heterotrophic Plate Count Method Compared to the Standard Plate Count Agar Pour Plate Method in Water
A new SimPlate heterotrophic plate count (HPC) method (IDEXX Laboratories, Westbrook, Maine) was compared with the pour plate method at 35°C for 48 h. Six laboratories tested a total of 632 water samples. The SimPlate HPC method was found to be equivalent to the pour plate method by regression analysis (r = 0.95; y = 0.99X + 0.06).
American Society for Microbiology.
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11. Antibiotic-resistant bacteria in drinking water.
We analyzed drinking water from seven communities for multiply antibiotic-resistant (MAR) bacteria (bacteria resistant to two or more antibiotics) and screened the MAR bacterial isolates obtained against five antibiotics by replica plating. Overall, 33.9% of 2,653 standard plate count bacteria from treated drinking waters were MAR. Two different raw water su
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12. Comparison of Limulus assay, standard plate count, and total coliform count for microbiological assessment of renovated wastewater.
The Limulus endotoxin assay was compared to the standard plate count and total coliform count for assessment of the bacteriological quality of reclaimed wastewater. A total of 48 water samples from an advanced waste treatment plant in Dallas, Tex. were examined by the three techniques. Limulus assays were technically simpler to perform and provided results m