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| Registros recuperados: 341 | |
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| Aquino,S.; Lui,C.C.; Corrêa,B.. |
| ABSTRACT The quality of products derived from eggs depends on the quality of the raw material source and the industrial production. The contamination by fungi and bacteria can occur after exposure of the product in the retail market. The objective of this study was to evaluate the microbiological quality of 60 samples of derivated egg products and evaluate the effects of gamma radiation of cobalt-60, using the dose of 5 and 10 kGy, for decontamination of products collected in the retail market in the São Paulo city. The bacterial count was performed by the most probable number (MPN) and the fungal counts by serial dilution after plating surface. It was observed a decrease in the humidity and water activity (Aw) values of irradiated whole egg powder and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacteria; Sterilization; Fungi; Irradiation; Powdered egg. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601683 |
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| Moreira,M.A.S.; Moraes,C.A.. |
| One hundred and ninety-seven isolates of Gram-negative bacteria, comprising 10 genera, were isolated from poultry carcasses at a processing plant in order to investigate resistance to low levels of antibiotics. The samples were taken just after evisceration and before inspection. Most of the isolates were of Samonella and Escherichia. Other genera present were Enterobacter, Serratia, Klebsiella, Kluyvera, Erwinia, Citrobacter, Pseudomonas and Aeromonas. Distinct profiles of antibiotic resistance were detected. Resistance to more than two antibiotics predominated and spanned several classes of antibiotics. Salmonellae and escherichiae were mainly resistant to the aminoglycosides, followed by tetracycline, nitrofuran, sulpha, macrolide, chloramphenicol,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Poultry; Antibiotic; Multi-resistance; Bacteria; Growth promoter. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352002000100001 |
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| Leopoldino,W.M.; Lana,R.P.; Borges,A.C.; Mantovani,H.C.; Teixeira,R.M.A.; Oliveira,J.S.; Jaremtchuk,A.R.; Eifert,E.C.; Martins,R.G.R.. |
| Ruminal fluid from steers fed on pasture was incubated with artificial media at pH 5.5 and 7.0 in two experiments. In the first, the effect of monensin level on resistance of ruminal bacteria to potassium depletion was evaluated; in the second, effects of the ionophores monensin and lasalocid on ammonia and protein production were quantified. In experiment 1, culture media affected potassium level. The monensin concentration needed to cause half maximal potassium depletion was 2.77µM at pH 5.5 but was 0.056µM at pH 7.0, showing that bacteria incubated at pH 5.5 were more tolerant to monensin than those incubated at pH 7.0. Both ionophores as well as increased acidity caused decreased ammonia production. Both ionophores inhibited ammonia production by 56%,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacteria; Lasalocid; Monensin; PH; Rumen. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000600012 |
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| Prado,M.R.; Brito,E.H.S.; Girão,M.D.; Sidrim,J.J.C.; Rocha,M.F.G.. |
| A total of 22 clinical specimens were obtained from 19 dogs with corneal ulcer (16 unilateral and three bilateral) for isolation and antimicrobial susceptibility evaluation of the isolated bacteria. Bacterial growth was observed in 100% of the samples (n=22). Staphylococcus intermedius was the predominant species (35.5%), followed by Corynebacterium xerosis (19.3%). Gentamicin, ciprofloxacin, chloramphenicol and tobramycin had a high efficacy against all of the isolated bacteria. The results evidenced that 80.7% of the isolates were Gram positive cocci and Gram positive bacilli, and that those microorganisms were sensitive to gentamicin, ciprofloxacin, chloramphenicol and tobramycin. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dog; Corneal ulcer; Bacteria. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352006000600008 |
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| Cóndor-Luján,Báslavi; Francia-Quiroz,Juan C.. |
| ABSTRACT In the last decades, sponges have emerged as the largest source of active compounds of animal origin for pharmaceutical purposes. In Peru information on these animals is incipient and scattered, which limits taking the right measures for their adequate management, exploitation, and conservation. The aim of this study is to provide an update on the scope and perspectives of sponge research in Peru, with an emphasis on species richness and their antibacterial potential. Likewise, research initiatives carried out in other South American Pacific countries are reviewed. Research efforts in Peru have allowed the description of 46 species; however, the sponge richness is underestimated. On the other hand, in other latitudes, active principles with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antimicrobial activity; Bacteria; Biotechnology; Marine biodiversity; Porifera.. |
| Ano: 2022 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612022000200107 |
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| Suárez,Jorge A.; García,Alberto; Newmark,Federico; Bador,Regis. |
| Con el objeto de determinar los factores iniciales que pueden afectar la sobrevivencia de postlarvas de camarón durante el proceso de larvicultura, se muestrearon tres laboratorios ubicados en la costa Atlántica de Colombia, cubriendo 71 lotes de nauplios en un período de 10 meses durante 1996. Para cada lote de nauplios se hizo seguimiento de variables cualitativas (origen, modo de transporte, presencia de bacterias en el agua de transporte) y variables cuantitativas (tiempo y densidad de transporte, características de la calidad del agua, proporciones de cada estadío y deformidad de los nauplios). Las variables calidad del agua y densidad (nauplios/l) se evaluaron durante los procesos de empaque, transporte, recepción, aclimatación y siembra de los... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nauplio; Calidad; Bacteria; Transporte. |
| Ano: 2001 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612001000100001 |
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| Panizzon,Jeremias Pakulski; Pilz Júnior,Harry Luiz; Knaak,Neiva; Ramos,Renata Cristina; Ziegler,Denize Righetto; Fiuza,Lidia Mariana. |
| This work presents bibliographic data on the role and function of microbial diversity. The increasing use of probiotics and prebiotics foods has led to the studies on their actual functions in the human body. It is known that in the environment, microorganisms are extremely important in recycling of nutrients, balance of trophic chains, vital physiological activities in the plants and animals, as well as the conservation of natural habitats. In human food, these microscopic organisms contribute from flavoring products to the synthesis of antimicrobial substances and vitamins essential to living beings. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacteria; Nutraceutical; Collective health; Review. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000100137 |
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| Abbas,Zafar; Akmal,Muhammad; Khan,Khalid Saifullah; Fayyaz-ul-Hassan,. |
| The present study aimed to evaluate the effect of bromoxynil herbicide on soil microorganisms, with the hypothesis that this herbicide caused suppression in microbial activity and biomass by exerting toxic effect on them. Nine sites of Punjab province (Pakistan) those had been exposed to bromoxynil herbicide for about last ten years designated as soil 'A' were surveyed in 2011 and samples were collected and analyzed for Microbial Biomass Carbon (MBC), Biomass Nitrogen (MBN), Biomass Phosphorus (MBP) and bacterial population. Simultaneously, soil samples from the same areas those were not exposed to herbicide designated as soil 'B' were taken. At all the sites MBC, MBN and MBP ranged from 131 to 457, 1.22 to 13.1 and 0.59 to 3.70 µg g-1 in the contaminated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomass; Buctril super; Bacteria; Effect; Population. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000100002 |
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| Ribeiro,Catherine Gérikas; Steffens,Maria Berenice Reynaud; Etto,Rafael Mazer; Galvão,Carolina Weigert; Martins,César de Castro; Pedrosa,Fábio de Oliveira; Kolm,Hedda Elisabeth. |
| 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 conditions (pristine and contaminated) of the Paranaguá Estuarine Complex (Paranaguá Bay and Laranjeiras Bay), Brazil. Aliphatic hydrocarbons were determined by the GC-FID to assess the status of contamination of the studied areas. The total DNA was extracted from these samples. The 16S rRNA gene was amplified by the PCR reactions with the pair of primers 21F and 958R for the archaeal domain, and 27F... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diversity; Mangroves; Archaea; Bacteria; 16S rRNA; ARDRA; Aliphatic hydrocarbons. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200013 |
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| Kolm,Hedda Elisabeth; Schoenenberger,Maria Fernanda; Piemonte,Mariana da Rocha; Souza,Patrícia S. de A.; Scühli,Guilherme Schnell e; Mucciatto,Mariele B.; Mazzuco,Roseli. |
| Spatial variability in the concentration of total bacteria, saprophytes and coliforms abundance was investigated in surface waters of Paranaguá and Antonina Bays. Six points along a profile from the entrance of Paranaguá Bay to the innermost part of Antonina Bay, were sampled on February 26, 1997. Temperature, salinity, dissolved oxygen, pH, particulate organic carbon, water transparency and seston were also measured. Determination of total bacterial abundance and biomass were made with the epifluorescent method. Saprophytic bacteria counts were conducted with ZoBell 2216E culture medium with fresh and 32 water and the coliform MPN was enumerated with the chromogenic substrate method. Principal component analysis of biotic and abiotic data showed a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacteria; Hydrographic variables; Estuary; Paranaguá and Antonina Bays. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000100005 |
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| Reali,Catiusca; Pilz Júnior,Harry Luiz; Meile,Jean Christophe; Galindo,Sabine Shorr; Fiuza,Lidia Mariana. |
| ABSTRACT The microbial composition of different types,in ecosystems (including agro-ecosystems), has been investigated in a rapidly growing number of studies in the past few years. The importance of microorganisms, regarding the maintenance and stability of nutrients in agroecosystems, is a key to maintain the sustainability of a crop. Molecular tools to study microbial communities are possible through many methods such as RISA, DGGE, TGGE, clone libraries, T-RFLP, RAPD, SSCP and more recently NGS (Next-Generation Sequencing). DGGE is widely employed to characterize the diversity and the community dynamics of microorganisms in the environment, making possible to find out specific groups through functional genes, allowing access to data that cannot be... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agroecosystems; Functional genes; Bacteria; DGGE; Metagenomics; Microbial ecology. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100201 |
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| Registros recuperados: 341 | |
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