Indicator Microorganisms
Mostrando 1-12 de 74 artigos, teses e dissertações.
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1. Produção de biossurfactantes: manoproteínas intracelulares e soforolipídios extracelulares por Saccharomyces cerevisiae
RESUMO Os biossurfactantes apresentam inúmeras aplicações ambientais e são produzidos por diversos microrganismos. Os provenientes da levedura Saccharomyces cerevisiae são pouco estudados para fins ambientais, sendo atóxicos. Objetivou-se o estudo da produção de biossurfactantes intra e extracelular por essa levedura, desenvolvida em meio de cultivo
Eng. Sanit. Ambient.. Publicado em: 20/12/2019
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2. Survey of verotoxin-producing Escherichia coli and faecal coliforms in beef carcasses destined for export at slaughterhouses in Brazil
Abstract This study investigated the presence of generic and verotoxin-producing E. coli as well as enumerated faecal coliforms in 30 beef carcasses in different parts of the slaughter process (after skinning, washing and cooling) at each of three slaughterhouses of the state of Mato Grosso do Sul, Brazil. Among the total number of carcasses examined (n = 90
Food Sci. Technol. Publicado em: 26/10/2017
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3. Self-Monitoring Microbiological Criteria for the Assessment of Hygienic Procedures During Chicken Slaughtering
ABSTRACT Self-monitoring procedures are adopted by food industries to ensure the quality and safety of final products, considering hygiene and processing criteria. This study aimed to evaluate contamination in chicken processing, considering the microbiological criteria proposed by self-monitoring systems. Environmental samples from reception, slaughtering a
Rev. Bras. Cienc. Avic.. Publicado em: 2017-06
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4. Anti-Escherichia coli effect of Hibiscus sabdariffa L. in a meat model
Abstract Hibiscus sabdariffa L. is used in traditional medicine because of its bioactive properties, such as antioxidant and antibacterial. Escherichia coli is a Gram-negative bacteria and as an indicator of contamination in food. The aim of this work was to evaluate the anti-Escherichia coli effect and the change in pH on the control of aerobic mesophilic m
Food Sci. Technol. Publicado em: 27/04/2017
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5. Evaluation of Disinfectants Used in Pre-Chilling water Tanks of Poultry Processing Plants
ABSTRACT In poultry processing plants, disinfectants are often added to pre-chilling water tanks to reduce microbial contamination. The present study aimed at evaluating the effect of five disinfectants (acidified sodium chlorite, alkyl dimethyl benzyl ammonium chloride, chlorine dioxide, peracetic acid, and sodium hypochlorite) on the populations of food qu
Rev. Bras. Cienc. Avic.. Publicado em: 2016-06
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6. Stability of antimicrobial activity of peracetic acid solutions used in the final disinfection process
The instruments and materials used in health establishments are frequently exposed to microorganism contamination, and chemical products are used before sterilization to reduce occupational infection. We evaluated the antimicrobial effectiveness, physical stability, and corrosiveness of two commercial formulations of peracetic acid on experimentally contamin
Braz. oral res.. Publicado em: 11/02/2015
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7. Clustering of water bodies in unpolluted and polluted environments based on Escherichia coli phylogroup abundance using a simple interaction database
Different types of water bodies, including lakes, streams, and coastal marine waters, are often susceptible to fecal contamination from a range of point and nonpoint sources, and have been evaluated using fecal indicator microorganisms. The most commonly used fecal indicator is Escherichia coli, but traditional cultivation methods do not allow discrimination
Genet. Mol. Biol.. Publicado em: 03/11/2014
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8. Endophytic fungi producing of esterases: evaluation in vitro of the enzymatic activity using pH indicator
A sensitive and efficient colorimetric method was optimized for detection of esterase enzymes produced by endophytic fungi for development of High-Throughput Screening (HTS). The fungi were isolated and obtained previously from plant species of Cerrado and Atlantic Forest located in areas of environmental preservation in the State of Sao Paulo / Brazil, as p
Braz. J. Microbiol.. Publicado em: 10/01/2014
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9. Analysis of moisture content, acidity and contamination by yeast and molds in Apis mellifera L. honey from central Brazil
The development of mold of environmental origin in honey affects its quality and leads to its deterioration, so yeasts and molds counts have been used as an important indicator of hygiene levels during its processing, transportation and storage. The aim of this study was to evaluate the levels of yeasts and molds contamination and their correlation with mois
Braz. J. Microbiol.. Publicado em: 2013-09
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10. Impact of Amazon land use on the community of soil fungi
Considered as one of the most biodiverse biomes, the Amazon has a featured role in the discovery of new species of plants, animals and microorganisms, which may be important for the functionality of different ecosystems. However, studies on the impacts resulted from changes in the Amazon land use on microbial communities and their functions are still limited
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-04
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11. Ardra profiles of bacteria and archaea in mangrove sediments with different levels of contamination in the estuarine complex of Paranaguá, Brazil
The mangrove's sediments from the coastal areas under human activities may contain significant contaminations by hydrocarbons, even when there are no visual evidences of it. The microorganisms are essential to these ecosystems, especially in the control of their chemical environment. Sediment samples were collected in two regions under different environment
Braz. arch. biol. technol.. Publicado em: 2013-04
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12. Rastreabilidade de micro-organismos patogênicos ao longo da produção de leite pasteurizado: ferramenta potencial para a segurança alimentar / Traceability of pathogenic microorganisms along the pasteurized milk production: a potential tool for food safety
O objetivo do presente estudo foi monitorar a incidência de Staphylococcus aureus, Listeria sp., Listeria monocytogenes, Escherichia coli, coliformes totais, bactérias aeróbias mesófilas e psicrotróficas ao longo da produção de leite pasteurizado, desde a ordenha até a obtenção do produto final para estabelecer etapas e locais críticos da produç�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012