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A thin layer electrochemical cell for disinfection of water contaminated with Staphylococcus aureus BJM
Gusmão,Isabel C. P.; Moraes,Peterson B.; Bidoia,Ederio D..
A thin layer electrochemical cell was tested and developed for disinfection treatment of water artificially contaminated with Staphylococcus aureus. Electrolysis was performed with a low-voltage DC power source applying current densities of 75 mA cm-2(3 A) or 25 mA cm-2 (1 A). A dimensionally stable anode (DSA) of titanium coated with an oxide layer of 70%TiO2 plus 30%RuO2 (w/w) and a 3 mm from a stainless-steel 304 cathode was used in the thin layer cell. The experiments were carried out using a bacteria suspension containing 0.08 M sodium sulphate with chloridefree to determine the bacterial inactivation efficacy of the thin layer cell without the generation of chlorine. The chlorine can promote the formation of trihalomethanes (THM) that are...
Tipo: Info:eu-repo/semantics/article Palavras-chave: S. aureus; Disinfection; Treatment of water; Thin layer cell.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000300029
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Ação do ozônio e da mistura de fluxapiroxade e piraclostrobina contra Botryosphaeria dothidea e Colletotrichum dianesei. Repositório Alice
BATISTA, D. da C.; ANDRADE, J. N. de; BARBOSA, M. A. G..
O objetivo deste trabalho foi avaliar doses da mistura dos fungicidas fluxapiroxade+piraclostrobina e de uma concentração de ozônio, utilizada em packinghouse para desinfestação da manga, contra os fungos B. dothidea e C. dianesei.
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: DMSO; BDA fundente; Manejo de fungos; Manga; Fungo; Fungicida; Ozônio; Desinfestação; Mangoes; Packing houses; Disinfection; Fungus physiology.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115291
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Callogenesis in leaf explants of Annona glabra L. Repositório Alice
SANTOS, M. R. A. dos; FERREIRA, M. das G. R.; BRAGA, A. G..
The objective of this study was the disinfection and induction of callus in leaf explants of A. glabra using combinations of growth regulators.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Annonaceae; Disinfection; Callus induction; TDZ; Annona glabra.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1033908
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Choice of sterilizing/disinfecting agent: determination of the Decimal ReductionTime (D-Value) BJPS
Mazzola,Priscila Gava; Jozala,Angela Faustino; Novaes,Letícia Célia de Lencastre; Moriel,Patricia; Penna,Thereza Christina Vessoni.
Efforts to diminish the transmission of infections include programs in which disinfectants play a crucial role. Hospital surfaces and medical devices are potential sources of cross contamination, and each instrument, surface or area in a health care unit can be responsible for spread of infection. The decimal reduction time was used to study and compare the behavior of selected strains of microorganisms. The highest D-values for various bacteria were obtained for the following solutions: (i) 0.1% sodium dichloroisocyanurate (pH 7.0) - E. coli and A. calcoaceticus (D = 5.9 min); (ii) sodium hypochlorite (pH 7.0) at 0.025% for B. stearothermophilus (D = 24 min), E. coli and E. cloacae (D = 7.5 min); at 0.05% for B. stearothermophilus (D = 9.4 min) and E....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Disinfection; Disinfectant agents; Decimal reduction time/determination.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502009000400013
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Contamination chimique du milieu marin : de la mesure à l'évaluation des risques ArchiMer
Abarnou, Alain.
This activity report entitled (“Chemical contamination of the marine environment: from measurement to risk assessment”) summarizes the main stages my career at Ifremer from November 1975 to june 2013. The first chapter deals with the seawater chlorination and chlorinated waters released into the sea, the identification and the conditions of the formation of various by-product of these processes. The second chapter concerns PCBs, their nature, their chemical analysis in environmental matrices. PCBs are considered as the best examples of persistant and bioaccumulable compounds and therefore, in all this report they are flagship contaminants to which other groups of studied substances are compared. The third chapter refers to studies performed within marine...
Tipo: Text Palavras-chave: Chlore; Chloration de l’eau de mer; Oxydant; Bromoforme; Impact environnemental; Mécanismes réactionnels; Désinfection; Polluants organiques persistants (POP); PCB; Dioxines; HAP; PBDE; Chlordécone; Baie de Seine; Organismes marins; Moules; Poissons; Surveillance environnementale; Analyse; Bioaccumulation; Chlorine; Seawater chlorination; Oxidizing agent; Bromoform; Environmental impact; Reaction mechanisms; Disinfection; Persitsent organic pollutants (POPs); PCBs; Dioxins; PAHs; PBDEs; Chlordecone (kepone); Baie de Seine; Marine organisms; Mussel; Fish; Environmental monitoring; Chemical analysis; Bioaccumulation.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00168/27946/26237.pdf
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Désinfection de l’eau de mer – DESIMER Etude des sous-produits de désinfection ArchiMer
Stavrakakis, Christophe; Papin, Mathias; Dupuy, Beatrice; Riou, Karen; Penisson, Christian; Nourry, Max; Hatt, Philippe-jacques; Buchet, Vincent; Palvadeau, Hubert.
L'eau qui alimente des structures d’élevage ou encore des plateformes expérimentales aquacoles (et potentiellement l’eau qui en est issue) peut être contaminée par des agents pathogènes infectant les coquillages, et plus particulièrement les huîtres, ou encore par des agents pathogènes entériques représentant un risque pour les consommateurs. Par ailleurs, la production possible d'huîtres tétraploïdes dans les installations d’élevage implique l’étude de solutions de traitement adaptées pour éviter tout rejet de gamètes, larves ou naissain d’animaux polyploïdes dans l'environnement. Le projet DESIMER a donc pour objectif d’étudier et de comparer différentes techniques de désinfection de l’eau de mer : la chloration, l’ozonation et le rayonnement UV afin de...
Tipo: Text Palavras-chave: Désinfection; Traitement de l’eau; Sous-produits; Vibrio aestuarianus; OsHV-1; Crassostrea gigas.; Disinfection; Water Treatment; By-products; Vibrio aestuarianus; OsHV-1; Crassostrea gigas..
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00376/48756/49141.pdf
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Detecção de Salmonella em pimenta-do-reino e métodos para descontaminação. Repositório Alice
HÜHN, S.; DANTAS, R. B.; MORAES, C. A. C.; FREITAS, I. M. de; BRITO, M. J. B.; MEDEIROS, N. L..
1997
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Pimenta-do-reino; Contaminação biológica; Desinfecção; Controle químico; Salmonelose; Etileno de amino-tetra-acetico; Hipoclorito de sodio; Higiene de alimento; Piper nigrum; Biological contamination; Chemical control; Salmonella; Chelating agents; Chlorine; Desinfectants; Food hygiene; Disinfection.
Ano: 1997 URL: http://www.alice.cnptia.embrapa.br/handle/doc/394596
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Effects of the electrolytic treatment on Bacillus subtilis BJM
Tolentino-Bisneto,Rodolfo; Bidoia,Ederio D..
Conventional processes of water disinfection can generate toxic composites. It is the case of the trihalomethanes (carcinogenic) formed in the contact of chlorine with organic substances present in the water. The electrolytic treatment can be a substitute for the chlorination process without the need for addition of chemical substances to the process. The effect of the electrolytic treatment using carbon cathode on the viability of the microorganism Bacillus subtilis was tested to determine the death process. By means of electronic microscopy, it was observed that the main cause of the microorganism's death was the cellular lysis due to the electroporation in the cell membrane.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Disinfection; Electrolytic treatment; Electroporation; Electronic microscopy.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500016
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Evaluation of the efficacy of commercial sanitizers against adhered and planktonic cells of Listeria monocytogenes and Salmonella spp. Ciênc. Tecnol. Aliment.
Carballo,Julia; Araújo,Ana-Belén.
Antimicrobial activities of two commercial disinfectants, alone or combined with heat, against three Salmonella strains and three Listeria monocytogenes strains were studied. The efficacy of disinfectants against planktonic bacteria and bacteria attached to three food contact industrial surfaces (stainless steel, polytetraflourethylene, and rubber) was investigated. The tests were conducted using the sanitizer (quaternary ammonium compounds, and alquyldiethylenediamineglycine and di-alquyldiamineethylglycine) concentrations recommended by the manufacturers, and concentrations twice and four times higher than those values. The recommended concentrations were not effective to kill bacteria, especially when they were attached to surfaces. Concentrations of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacterial attachment; Food contact surface; Disinfection; Sanitizer.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000300027
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Evaluation of the thermo-assisted drying and decontamination system and ozone gas for sanitation of livestock transport vehicles. In: INTERNATIONAL PIG VETERINARY SOCIETY CONGRESS, 25., 2018, Chongqing. Repositório Alice
SATO, J. P. H.; PIGOZZO, R.; BRANDALISE, L.; LIMA, G. F. R.; CERIZOLLI, R.; KUCHIISHI, S. S.; KICH, J. D.; SIMÃO, G. M. R..
bitstream/item/179893/1/final8899.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Total coliforms; Sanidade Animal; Transporte; Biossegurança; Coliforme; Desinfecção; Ozônio; Animal health; Animal transport; Biosecurity; Disinfection; Ozone.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1093351
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Evaluation of two recommended disinfection methods for cleaning cloths used in food services of southern Brazil BJM
Bartz,Sabrina; Tondo,Eduardo Cesar.
In the State of Rio Grande do Sul (RS), Southern Brazil, a good manufacturing practices regulation was published recommending two disinfection methods for cleaning cloths used in food services. The aim of the present study was to evaluate the efficacy of those methods. Cleaning cloths were sampled without prior notice at food services, on common working days. For the analyses, the cloths were divided in two sub-samples, being one of them microbiologically analyzed. The second sub-sample was further divided in two pieces and submitted to hand washing for two minutes. After that, one piece was boiled in water for 15 min and the other one was soaked in a 200 ppm sodium hypochlorite solution for 15 min. Both pieces of cloth were submitted to microbiological...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cleaning cloths; Disinfection; The State of Rio Grande do Sul; Brazilian food services.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300015
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Germinación en semilla de chile piquín (Capsicum annuum var. aviculare). Colegio de Postgraduados
Cano Vázquez, Anaid.
El chile piquín es una planta silvestre que presenta ciertos mecanismos para asegurar la perpetuación de la especie. Dentro de estos mecanismos se encuentra la latencia de sus semillas. La germinación de las semillas de chile piquín presenta problemas para siembras intensivas comerciales. En este trabajo se planteó: 1) comparar diversas colectas en cuanto a su capacidad germinativa; 2) indagar si la baja germinación se debe a impermeabilidad en la semilla o a alguna característica estructural de la semilla; 3) encontrar un tratamiento de preacondicionamiento que mejore la germinación de la semilla y 4) probar la germinación in vitro como un método alternativo para obtener plántula en un corto tiempo. Para prevenir la interferencia de microorganismos...
Palavras-chave: Germinación; Impermeabilidad; Latencia; Desinfección; Germination; Permeability; Dormancy; Disinfection; Fisiología Vegetal; Maestría.
Ano: 2013 URL: http://hdl.handle.net/10521/2114
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In vitro efficacy of several disinfectants against Salmonella enterica serovar Enteritidis and Escherichia coli strains from poultry Ciência Rural
Martínez-Martínez,Sonia; Yubero-Delgado,Sheila; Rodríguez-Ferri,Elías-Fernando; Frandoloso,Rafael; Álvarez-Estrada,Álvaro; Gutiérrez-Martín,César-Bernardo.
ABSTRACT The efficacy of 28 individual or blended disinfectants against avian Salmonella enterica serovar Enteritidis and Escherichia coli strains was determined. An in vitro test in the presence and absence of serum as source of organic material was conducted. Povidone-iodine (releasing 1% available iodine), 1% potassium permanganate, 70% ethanol, 2% chlorhexidine digluconate and three commercial formulations based on quaternary ammonium compounds + formaldehyde or cresol derivates were the most effective against all strains tested and reduced bacterial counts by more than 106 times (6-log10) regardless of the presence of organic matter. These commercial compounds as well as ethanol and chlorhexidine among the individual substances tested might be...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Salmonella enterica serovar Enteritidis; Escherichia coli; Disinfection; Suspension test; Poultry industry.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000801438
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Isolation, pathogenicity and disinfection of Staphylococcus aureus carried by insects in two public hospitals of Vitória da Conquista, Bahia, Brazil BJID
Oliveira,Pollianna S.; Souza,Simone G.; Campos,Guilherme B.; Silva,Danilo C.C. da; Sousa,Daniel S.; Araújo,Suerda P.F.; Ferreira,Laiziane P.; Santos,Verena M.; Amorim,Aline T.; Santos,Angelita M.O.G.; Timenetsky,Jorge; Cruz,Mariluze P.; Yatsuda,Regiane; Marques,Lucas M..
Currently, hospital infection is a serious public health problem, and several factors may influence the occurrence of these infections, including the presence of insects, which are carriers of multidrug-resistant bacterial species. The aim of this study was to isolate staphylococci carried by insects in two public hospitals of Vitoria da Conquista, Bahia and to identify the resistance profile, pathogenicity and efficacy of disinfection of the premises. A total of 91 insects were collected in 21 strategic points of these hospitals, and 32 isolated strains ofStaphylococcus aureus were isolated. Based on antibiogram and Minimum Inhibitory Concentration results, 95% of these strains were susceptible to oxacillin. These strains were also evaluated for the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insects; Staphylococcus aureus; Resistance; Virulence factors; Disinfection.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702014000200129
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L'ionisation des produits de la pêche ArchiMer
Kodo, Jean-louis.
Fishes and fishery products are seafoods which have a nutritive value with a high proteins rate. Fishery products ionization has four steps: the radappertization (sterilization of the seafood), the radicidation (destruction of the pathogen germs), the radurization (food conservation and microbial flora reduction), the desinsectization (insects and parasites elimination). Fishery products quality control is very important
Tipo: Text Palavras-chave: Legislation; Microbial contamination; Marine fish; Disinfection; Pathogens; Sterilization; Irradiation; Ionizing radiation; Fish inspection regulations; Quality control; Seafood; Processed fishery products; Bacteria.
Ano: 1990 URL: http://archimer.ifremer.fr/doc/1990/rapport-649.pdf
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Microbiological and physicochemical treatments applied to metallurgic industry aiming water reuse BABT
Bello,Antonio Roberto Crystal; Angelis,Dejanira de Franceschi de; Domingos,Roberto Naves.
A study was conducted on the reuse of the water in a system composed of a sewage treatment plant (STP) using prolonged aeration with activated sludge and a compact water treatment plant (CWTP) in a metallurgic industry. The processes for obtaining the water for reuse were microbiological and physicochemical. The domestic sewage was then pumped to the STP, where biological flocks were formed and clarified water was obtained. The efficiency of the microbiological process in the STP was evaluated for removal of biochemical oxygen demand (BOD), chemical oxygen demand (COD) and sedimentary solids (SS). The efficiency of physicochemical processes for clarifying the water and disinfection was evaluated through analysis of pH, turbidity, color, aerobic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water; Reuse; Sewage; Microorganisms; Disinfection.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000200020
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Probiotic and formaldehyde treatments of Artemia nauplii as food for larval pollack, Pollachius pollachius ArchiMer
Gatesoupe, Joel.
Formaldehyde was used to disinfect Artemia cysts and nauplii, while introducing two probiotics in the enrichment process: Bactocell (Pediococcus acidilactici) and Levucell (Saccharomyces cerevisiae). The disinfectant was selected due to its potential compatibility with probiotics, since it was more effective against Gram-negative bacteria than against lactic acid bacteria and yeast. However, the presence of formaldehyde reduced the intake of P. acidilactici in Artemia. Consequently, the disinfection was stopped before Bactocell supplementation to the nauplii fed to pollack (Pollachius pollachius) larvae. The mean weight of pollack was higher with this probiotic treatment. Growth was even better with the combination of Levucell and Bactocell, but the yeast...
Tipo: Text Palavras-chave: Drug resistance; Bacterial genotype; Disinfection; Probiotic; Artemia; Marine fish larvae.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/publication-393.pdf
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Problemas sanitários que interferem na qualidade da pimenta-do-reino. Repositório Alice
DUARTE, M. de L. R.; MEDEIROS, N. L.; ALBUQUERQUE, F. C. de..
1997
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Pimenta-do-reino; Contaminação bacteriana; Qualidade; Desinfecção; Salmonella abaetetubae; Salmonela nuami; Piper nigrum; Biological contamination; Quality; Disinfection.
Ano: 1997 URL: http://www.alice.cnptia.embrapa.br/handle/doc/394587
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Recommendations for hygiene of masks and circuits in mechanically home ventilated patients BJID
Toussaint,Michel; Reychler,Gregory.
Home mechanical ventilation requires equipment, consisting of a generator of pressure, a tubing and an interface to deliver air to the patient. Instructions for equipment maintenance are generally not based on scientific evidence. Studies however have reported that tubing and masks used at home are the most commonly found as very dirty and contaminated. Dirtiness and contamination of equipment potentially expose patients to a higher risk of airway colonization, which, in turn, should cause respiratory infections. For this reason, published hygiene instructions include the use of disinfectant solution. Nevertheless, they generally fail to explain how basic maintenance may be achieved by simple cleaning with soap and water. The instructions for post-cleaning...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Contamination; Colonization; Disinfection; Home mechanical ventilation; Hygiene; Maintenance; Non-invasive ventilation.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000400013
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Risk of hepatitis B virus transmission by diagnostic hysteroscopy BJMBR
Santos,N.C.; Pinho,J.R.R.; Lemos,M.F.; Moreira,R.C.; Lopes,C.M.C.; Sacilotto,M.T.J.; Tacla,M.; Pinheiro,W.S.; Ramos,L.O..
Few data are available in the literature concerning the efficacy of standard hysteroscope disinfection procedures to prevent hepatitis B transmission. The aim of the present study was to determine the risk of hepatitis B virus (HBV) transmission during hysteroscopy among anti-HBc-seropositive women. Serum and hysteroscopic samples were collected from 62 women after diagnostic hysteroscopy. All samples were tested for serologic HBV markers. Polymerase chain reactions (PCR) were carried out to amplify regions C and S of the viral genome and only samples amplified by both pairs of primers were considered to be positive. Anti-HBc was repeatedly reactive in 48 (77%) of 62 serum samples, and HBsAg was detected in 8 (13%). At least one HBV serologic marker was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hepatitis B; Hysteroscopy; Disinfection; Polymerase chain reaction.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000500009
Registros recuperados: 24
Primeira ... 12 ... Última
 

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