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| Registros recuperados: 12 | |
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| Brustolin,Jean Carlos; Dal Pisol,Andreia; Steffens,Juliana; Toniazzo,Geciane; Valduga,Eunice; Di Luccio,Marco; Cansian,Rogério Luis. |
| The objective of this work was to evaluate the effect of different water pressures and concentrations of lactic acid on microbial counts (mesophilic bacteria, enterobacteria and Salmonella) on pig carcasses without contamination and contaminated carcasses, before and after the last shower and before being cooled. The tests were carried out using 4, 3 and 2 bar water pressure, and 2, 1 and 0% lactic acid concentration. In general, both the pressure in the shower and lactic acid had a positive effect by reducing the microbial count. The interaction between the pressure and lactic acid caused the largest reduction in carcasses surface count for mesophiles. With regard to enterobacteria on contaminated carcasses, the most important variable was the lactic acid... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pig carcasses; Decontamination; Water pressure; Lactic acid; Bacteria. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000600954 |
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| Ambrosio,Simone Rodrigues; Oliveira,Eugenia Márcia de Deus; Rodriguez,Cesar Alejandro Rosales; Ferreira Neto,José Soares; Amaku,Marcos. |
| Sixty samples of tissue fragments with lesions suggestive of tuberculosis from bovine abattoirs, kept in saturated solution of sodium borate, were subjected to four treatments: 4% NaOH (Petroff Method), 12 % H2SO4 and 1.5% HPC (1-Hexadecylpyridinium Chloride) decontamination, and physiological saline solution (control). The HPC method showed the lowest contamination rate (3%) when compared to control (88%, p<0.001), NaOH (33%, p<0.001) and H2SO4 (21.7%, p<0.002). Regarding the isolation success, the HPC method was better (40%) than the control (3%, p<0.001), NaOH (13%, p=0.001) and H2SO4 (1.7%, p<0.001) methods. These results indicate that HPC is an alternative to the Petroff method. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycobacterium bovis; Decontamination; Petroff; HPC. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000200008 |
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| Redmerski,Roberta; Bulla,Joice Renata; Moreno,Tatiana; Garcia,Lourdes Botelho; Cardoso,Celso Luiz. |
| This study investigated the effectiveness of detergent and aqueous solutions of 2% chlorhexidine digluconate in decontaminating gutta-percha cones (gpc) contaminated with bacteria, yeast, or bacterial spores. Gutta-percha cones were contaminated with 10(7)-10(8) colony-forming units per milliliter (cfu/ml) of the following test organisms: Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, or Candida albicans. Spores of Bacillus subtilis were also tested. Contaminated gpc were treated with the chlorhexidine solutions for 1, 5, 10, or 15 min. Each cone was then transferred to a tube containing saline and the micoorganisms were recovered after homogenization for cfu determination. Both detergent and aqueous chlorhexidine solutions were effective... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chlorhexidine; Decontamination; Gutta-percha cones. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000400013 |
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| Cardoso,Celso Luíz; Redmerski,Roberta; Bittencourt,Nilza de Lucas Rodrigues; Kotaka,Cinthia Regiane. |
| The effectiveness of seven disinfectant compounds used in dentistry for a rapid decontamination of 32 gutta-percha cones adhered with Staphylococcus aureus, Enterococcus faecalis, Escherichia coli strains or Bacillus subtilis spores was compared. Cones were treated with 2% glutaraldehyde, 1% sodium hypochlorite, 70% ethyl alcohol, 1% and 0.3% iodine alcohol, 2% chlorhexidine, 6% hydrogen peroxide, and 10% polyvinylpyrrolidone-iodine, for 1, 5, 10, and 15 minutes. After treatment, each cone was transferred to thioglycollate broth and incubated at 37ºC for 7 days. The products were bactericidal after 1 to 5 minutes and, with exception of ethyl alcohol and iodine-alcohol, sporicidal after 1 to 15 minutes of exposure. Results suggest that chlorhexidine, sodium... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Chemical agents; Gutta-percha cones; Decontamination. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000100016 |
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| Almeida,Alex-Alan F. de; Valle,Raúl R.; Mielke,Marcelo S.; Gomes,Fábio P.. |
| High concentrations of Cd, Pb, Cu and Cr can cause harmful effects to the environment. These highly toxic pollutants constitute a risk for aquatic and terrestrial life. They are associated with diverse bioavailable geochemical fractions, like the water-soluble fraction and the exchangeable fraction, and non-available fractions like those associated with the crystalline net of clays and silica minerals. Depending upon their chemical and physical properties we can distinguish different mechanisms of metal toxicity in plants, such as production of reactive oxygen species from auto-oxidation, blocking and/or displacement of essential functional groups or metallic ions of biomolecules, changes in the permeability of cellular membranes, reactions of sulphydryl... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Decontamination; Heavy metals; Hyperaccumulation; Phytodegradation; Phytostabilization; Phytotoxicity. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000200001 |
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| Cetin,B; Uran,H; Konak,M. |
| ABSTRACT In this study, the effect of evaporated ethyl pyruvate (EP) was evaluated for the decontamination of Salmonella Enteritidis on chicken leg meat as a safe alternative to antimicrobial agent. Also, total aerobic mesophilic bacteria (TAMB), Enterobacteriaceae, Escherichia coli and yeast-mold counts samples were investigated. Subsequently, the samples were injected with 0, 42, 105 and 420 mg evaporated EP/L air to the paper filter attached to the container cover and stored at +4 °C for 10 days. According to the results, 42 mg EP/L concentration did not cause a significant decrease in Salmonella Enteritidis count (p>0.05). However, it was determined that 105 and 420 mg EP/L treatments reduced the number of Salmonella Enteritidis by more than 1 and 2... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chicken Meat; Decontamination; Ethyl Pyruvate; Salmonella Enteritidis. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200301 |
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| Dias,Luiz Eduardo; Melo,Roseli Freire; Mello,Jaime Wilson Vargas de; Oliveira,Juraci Alves; Daniels,Walter Lee. |
| Phytoremediation strategies utilize plants to decontaminate or immobilize soil pollutants. Among soil pollutants, metalloid As is considered a primary concern as a toxic element to organisms. Arsenic concentrations in the soil result from anthropogenic activities such as: the use of pesticides (herbicides and fungicides); some fertilizers; Au, Pb, Cu and Ni mining; Fe and steel production; coal combustion; and as a bi-product during natural gas extraction. This study evaluated the potential of pigeon pea (Cajanus cajan), wand riverhemp (Sesbania virgata), and lead tree (Leucaena leucocephala) as phytoremediators of soils polluted by As. Soil samples were placed in plastic pots, incubated with different As doses (0; 50; 100 and 200 mg dm-3) and then sown... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Remediation; Decontamination; Phytoremediation; Phytostabilization. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300039 |
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| Registros recuperados: 12 | |
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