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Registros recuperados: 22
Primeira ... 12 ... Última
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Analyses microbiologiques et chimiques des produits de la pêche et de l'eau OceanDocs
Diouf, Sidiya.
Ce rapport porte principalement sur la microbiologie, la chaîne biochimie des aliments et des eaux au terme d'un stage d'un mois effectué au Laboratoire de Sécurité Alimentaire et d'Hygiène de l'Environnement (LSAHE) de l'Institut Pasteur de Dakar. Nous avons donné quelques notions générales sur: (1) les différents germes recherchés dans: - le poisson (frais ou transformé); germes capables d'altérer la qualité marchande du poisson (la flore totale à 30 ° C); - germes potentiellement pathogènes (ASR, Salmonellea, Staphylococcus); - germes témoins de contamination fécale (coliformes fécaux); - germes indicateurs technologiques (coliformes totaux entérobactéries). (2) l'eau et la glcae: - germes capables d'altérer la qualité marchande de l'eau (la flore...
Tipo: Report Palavras-chave: Microbiological analysis; Fish; Water analysis; Ice; Hygiene; Quality control; Fish; Ice; Microbiological analysis; Water analysis; Hygiene; Http://aims.fao.org/aos/agrovoc/c_15903; Http://aims.fao.org/aos/agrovoc/c_3782; Http://aims.fao.org/aos/agrovoc/c_25302; Http://aims.fao.org/aos/agrovoc/c_16064; Http://aims.fao.org/aos/agrovoc/c_3739.
Ano: 2001 URL: http://hdl.handle.net/1834/4074
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Cambios en la composición de pequeños pescados pelágicos salados en salmuera durante su producción y almacenamiento OceanDocs
Bostock, T.; Camba, N..
Los cambios físicos, químicos y organolépticos en macarela (Scomber japonicus) y sardina (Sardinops sagax, Etrumeus teres) saladas durante el procesamiento y subsecuente almacenamiento en salmuera son descritos. Es evaluada además la calidad del producto desde el punto de vista microbiológico, así como también los efectos que se observan en el producto final cuando el artesano ecuatoriano usa materia prima de baja calidad. Los principales cambios que ocurren (enrojecimiento de la carne, desarrollo de olores a frutas, el aumento de las bases volátiles totales y de proteínas solubles y posiblemente histamina parecen estar relacionadas más con la autólisis que con el desarrollo microbiológico). La maduración o ”deterioración” (en términos del paladar...
Tipo: Journal Contribution Palavras-chave: Processing fishery products; Storage effects; Chemical composition; Physical properties; Organoleptic properties; Microbiological analysis; Cured products; Chemical composition; Physical properties; Organoleptic properties; Microbiological analysis; Http://aims.fao.org/aos/agrovoc/c_1794; Http://aims.fao.org/aos/agrovoc/c_13328; Http://aims.fao.org/aos/agrovoc/c_5399; Http://aims.fao.org/aos/agrovoc/c_25302.
Ano: 1986 URL: http://hdl.handle.net/1834/3153
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Development of a preservative for white fresh cheese from the addition of Peruvian Tara gum Caesalpinia spinosa Ciênc. Tecnol. Aliment.
QUISCA,Richard Pacheco; MORÁN,Jorge Vargas; GALLOZA,Gilberto García; ARIAS,Jonnatan Victor Bañon; MONTOYA,Enrique Neira; URQUIZO,Fanny Ludeña; RAMÍREZ,Miriam Elizabeth Ramos; YACCHI,Teresa Alvarado; CHÁVEZ,Tarsila Tuesta.
Abstract Over the time, fresh cheese undergoes changes in its physicochemical and sensorial properties, mostly associated to the loss of moisture, which directly affects the texture and yield. In this sutdy, we elaborated an alternative formulation for the preparation of cheese with Peruvian tara gum Caesalpinia spinosa, for moisture retention increasing, without loss of sensory acceptance. Different formulations were prepared by modifying amounts of salt and tara gum to achieve the highest sensory acceptability, without loss of texture, water and weight. Microbiological tests were performed in agreement with Peruvian regulations, showing limits of mold, yeast, coliform, Salmonella sp and bacteria below the stablished limit. Cheese with addition of tara...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fresh cheese; Tara gum; Sensory acceptance; Microbiological analysis; Moisture retention.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000100210
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Effects of environmental conditions on the sessile existence of an estuarine sediment bacterium. ArchiMer
Geesey, G; Salas, S; Mittelman, M.
A submerged glass coverslip technique was developed to determine dissolved organic nutrient uptake by adherent cells of a sediment isolate of Enterobacter cloacae . Cells which colonized the coverslips in swirling culture flasks during anaerobic growth remained firmly attached during manipulations employed to determine uptake of radiolabeled glucose by the adherent population. The attached cells were capable of a more rapid rate of glucose uptake than free cells. Lineweaver-Burk plots demonstrated different glucose uptake kinetics for the 2 cell populations. The data suggest that physiological changes occur in cells soon after they become attached to surfaces. These changes appear to enhance the metabolic activity of the adherent population.
Tipo: Text Palavras-chave: Enterobacter cloacae; Adhesion; Glucose; Environmental effects; Bacteria; Sediments; Estuaries; Sessile species; Culture media; Metabolism; Dissolved oxygen; Microbiological analysis.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-967.pdf
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Effet de l’addition du thym, du laurier et du romarin sur la conservation de l’anguille fumée OceanDocs
Zerai, T.; Mestiri, F.; Romdhane, M.S.; Mejri, S..
L’effet de l’addition de trois types d’additifs naturels: le thym (Thymus vulgaris), le laurier (Laurus nobilis) et le romarin (Rosmarinus officinalis) sur l’amélioration de la conservation de l’anguille fumée a été étudié. Une comparaison des caractéristiques microbiologiques, physicochimiques et organoleptiques du produit, par rapport au lot témoin, fumé sans additifs a été réalisée durant 5 semaines à 4 °C. Nous avons trouvé que l’addition du thym, a permit une réduction de la flore aérobie mésophyte totale (FAMT), a ralenti la formation de l’azote basique volatil total (ABVT), et a permit une réduction de l’oxydation de la matière grasse. Le lot ainsi traité, a été très apprécié par les dégustateurs, et le thym a eu un effet améliorateur sur le...
Tipo: Journal Contribution Palavras-chave: Chemical analysis; Cured products; Microbiological analysis; Processing fishery products; Quality; Storage life; Taste tests; Anguilla anguilla; Laurus nobilis; Rosmarinus officinalis; Http://aims.fao.org/aos/agrovoc/c_41152; Http://aims.fao.org/aos/agrovoc/c_4227; Http://aims.fao.org/aos/agrovoc/c_6660.
Ano: 2006 URL: http://hdl.handle.net/1834/4278
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Enterobacteria identification and detection of diarrheagenic Escherichia coli in a Port Complex BJM
Costa,Clarissa Frota Macatrão; Monteiro Neto,Valério; Santos,Bruno Rafael de Carvalho; Costa,Bruno Rafael Rabelo; Azevedo,Alexandre; Serra,Josilene Lima; Mendes,Hermínio Benítez Rabello; Nascimento,Adenilde Ribeiro; Mendes,Mariana Bonfim Pinto; Kuppinger,Oliver.
The Port Complex of Maranhão (PCM) is the second largest port complex in Brazil, receiving ships with large volumes of ballast water. To evaluate the microbiological quality of its waters, physicochemical parameters (pH and salinity), the number of coliforms (thermotolerants and totals), and the presence of enterobacterias and diarrheagenic Escherichia coli strains were analyzed. In order to identify the presence of E. coli virulence genes target regions of the stx, elt, est, aggR, CVD432, ipaH and eae nucleotide sequences were studied. The presence of totals and thermotolerants coliforms were positive. Analyzing the salinity parameter, a significant increase in total coliforms was observed during the rainy season. We identified the species Escherichia...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Microbiological analysis; Coliforms; Enterobacterias; Ballast water; Escherichia coli.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300026
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Estudio comparativo de la calidad del agua en el área marino costera de Bahía Academia, Caleta Aeolian y Puerto Villamil - Islas Galápagos - junio-julio 2007 OceanDocs
Palacios, C.; Burgos, L..
Se analiza los datos tomados en el área marino costera de tres importantes islas de Galápagos como son: Bahía Academia-Santa Cruz, Caleta Aeolian-Baltra y Puerto Villamil-Isabela, durante los meses de junio y julio del 2007, considerando la distribución superficial de los parámetros físicos, químicos en cada una de las áreas. Se efectúa el análisis comparativo de las concentraciones promedios y la calidad microbiológica con los límites permisibles establecidos en la Legislación Secundaria Ambiental, concluyendo en general, que la calidad del agua está acorde con la vida marina, pero que a pesar de no presentar mayores problemas de contaminación, existen área muy puntuales que ameritan mayor cuidado y seguimiento para preservar y conservar estas islas que...
Tipo: Journal Contribution Palavras-chave: Water quality; Microbiological analysis; Physical properties; Data processing; Water quality; Microbiological analysis; Physical properties; Data processing; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_25302; Http://aims.fao.org/aos/agrovoc/c_13328; Http://aims.fao.org/aos/agrovoc/c_10289.
Ano: 2009 URL: http://hdl.handle.net/1834/3369
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Estudios de enterobacterias en las inmediaciones de Punta Fort William, Isla Greenwich OceanDocs
Helguero, C.; Valencia T., M..
Se presenta un estudio microbiológico de las aguas de Ensenada Guayaquil y Bahía Chile, con el propósito de determinar presencia de enterobacterias en las mismas; se detectó la existencia de tres grupos: Escherichiae, Yersinieae y Klebsielleae. Se estima que eventualmente dicha presencia es ocasionada por la presencia de la actividad humana en el área y por el aporte de los excrementos de las aves transportadas en aguas provenientes de deshielos en el verano.
Tipo: Journal Contribution Palavras-chave: Microbiological analysis; Microorganisms; Polar waters; Microbiological analysis; Microorganisms; Http://aims.fao.org/aos/agrovoc/c_25302; Http://aims.fao.org/aos/agrovoc/c_4807.
Ano: 1993 URL: http://hdl.handle.net/1834/3808
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Estudios químicos y bacteriológicos del río Baradero (Argentina): calidad sanitaria del agua y aptitud de los peces para consumo humano OceanDocs
Costagliola, M.; Seigneur, G.N.; Jurquiza, V..
As a result of an agreement signed by the Municipal Government of Baradero Buenos Aires Province, Argentina and the INIDEP, the sanitary quality of the Baradero River waters was studied and fish safety assessed. Results of five field surveys carried out between 1993 and 1997 are studied. Organochlorine and organophosphorate pesticide residues, as well as traces of heavy metals were analyzed in 49 fish specimens and aerobic heterotrophic bacteria (AHB), total coliform bacteria (TC) and fecal coliform bacteria (FC) were counted out in 7 sampling stations placed on the coast and the riverbed. Alpha Hexachlorohexane, gamma Hexachlorohexane, beta Hexachlorohexane, Aldrin, Heptachlor epoxide, pp'DDE and Dieldrin were detected in fish tissues. The values of AHB...
Tipo: Journal Contribution Palavras-chave: Freshwater pollution; Pollution surveys; Chemical analysis; Water analysis; Microbiological analysis; Pesticides; Public health; Pathogenic bacteria; Pesticides; Public health; Water analysis; Microbiological analysis; Pathogenic bacteria; Http://aims.fao.org/aos/agrovoc/c_5739; Http://aims.fao.org/aos/agrovoc/c_6349; Http://aims.fao.org/aos/agrovoc/c_16064; Http://aims.fao.org/aos/agrovoc/c_25302; Http://aims.fao.org/aos/agrovoc/c_34317.
Ano: 2003 URL: http://hdl.handle.net/1834/2417
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Estudiosd bacteriológicos en la Ciénaga Grande de Santa Marta, Colombia OceanDocs
Jeske, R..
Mientras predominan las aguas salobres en la Ciénaga Grande se destacan las formas bacterianas halófilas. Durante la época de lluvias (invierno, disminuye la salinidad, sin embargo las formas halófilas aumentan en número. La reproducción de bacterias de agua dulce se inicia sólo cuando la salinidad llega bajo un valor de un 10°/o/o. Estas alcanzan su valor máximo temporáneo en salinidades de un 3°/o/o. Al mismo tiempo disminuyen las formas halófilas. Observaciones sobre contaminación fecal se realizaron en las aguas de la Ciénaga. Como indicador se utilizó Escherichia coli. En las inmediaciones de los pueblos de pescadores es posible detectar cierta contaminación. En cambio, en el resto de la Ciénaga, en contados casos se observa E. coli. La presencia de...
Tipo: Journal Contribution Palavras-chave: Coastal lagoons; Estuaries; Microbiological analysis; Microbial contamination; Estuaries; Microbial contamination; Coastal lagoons; Microbiological analysis; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_37547; Http://aims.fao.org/aos/agrovoc/c_1697; Http://aims.fao.org/aos/agrovoc/c_25302.
Ano: 1976 URL: http://hdl.handle.net/1834/3322
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Etude de la résistance aux antibiotiques des bactéries isolées de "mytilus galloprovincialis. OceanDocs
El Bour, M.; Bouamama, K.; El Abed, O..
L’étude des résistances vis-à-vis de différentes substances antibiotiques pour des espèces bactériennes (aérobies et anaérobies) isolées chez Mytilus galloprovincialis a été réalisée par la méthode standard de l’antibiogramme. Ainsi, 50 souches bactériennes aérobies et 20 souches anaérobies appartenant à plus de 25 espèces différentes ont été isolées et testées. Les résultats obtenus montrent des profils à plusieurs résistances vis-à-vis des différentes familles d’antibiotiques testés. Les résultats obtenus révèlent des profils à 12 résistances différentes notamment chez l’espèce anaérobie (Propioni acnes). Aussi, chez l’espèce aérobie pré dominante ( Aeromonas hydrophila) nous avons mis en évidence au moins 6 antibiotypes différents. Ces résultats...
Tipo: Journal Contribution Palavras-chave: Antibiotics; Bacterial diseases; Control resistance; Ecology; Eutrophication; Indicator species; Microbiological analysis; Bacteria; Mytilus galloprovincialis; Http://aims.fao.org/aos/agrovoc/c_765; Http://aims.fao.org/aos/agrovoc/c_31155.
Ano: 2006 URL: http://hdl.handle.net/1834/4266
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Etude experimentale de la colonisation de surfaces par les bacteries, en eau de mer circulante ArchiMer
Fera, P; Prieur, D.
Before the building of an (OTEC) power plant, and experimental station was built near the entrance of the Bay of Brest in order to do preliminary studies. Using these facilities, the bacterial colonization of three substrata (stainless steel UB6, aluminium AG4, polycarbonate filters) was studied in an open seawater system, with a speed of 0,7 m s super(-1). The study was performed between May 1983 and May 1984, including seven experiments of 15 days each. Bacteria colonizing the metallic surfaces were counted by scanning electron microscopy, and bacteria colonizing the polycarbonate filters counted by epifluorescence microscopy. On the three substrata, bacterial colonization occurred in three successive stages: initial colonization, sometimes unsteady...
Tipo: Text Palavras-chave: Fouling; OTEC plants; Bacteria; Colonization; Adhesion; Microbiological analysis; Surface films.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-964.pdf
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Isolement et identification de vibrions halophiles d'une station experimentale de mariculture ArchiMer
Bruni, V; Crisafi, E; Maugeri, T; Zaccone, R.
110 Vibrio strains were isolated, at various times of the year, from samples of sea-water supply, breeding-tank water and discarded fish used as food at the breeding stations. From the results obtained by the biochemical and cultural tests, it was possible to identify most of the isolated strains as Vibrio anguillarum . Strains with intermediate characteristics, above-all positive saccharose, proved to be numerous. The authors discuss the occurrence, in particular environments such as those being studied, of atypical or intermediate vibrio strains which are difficult to classify.
Tipo: Text Palavras-chave: Vibrio; Microbiological culture; Bacteria; Food; Minced products; Fish ponds; Sea water; Identification; Marine aquaculture; Bacteria collecting devices; Microbiological analysis.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-997.pdf
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Methods for microbial biomass, community structure and metabolic activities on surfaces. ArchiMer
White, D.
Microbes in nature are often concentrated on surfaces where they exist in microcolonies of mixed composition. The assay of these mixed microbial consortia by utilizing biochemical components eliminates the problems associated with cultural selectivity of viable counts or the requirement for quantitative release from surfaces required in some microscopic techniques. The assay of cellular components restricted to subsets of the microbial community gives insights into the community structure of the biofilm whereas assay of cellular components common to all cells can be used for biomass estimations. Formation of endogenous storage materials can be utilized as measures of nutritional status and rates of formation or turnover of specific "signatures" from...
Tipo: Text Palavras-chave: Bacteria; Fouling; Bioassays; Metabolism; Surfaces; Bacteria collecting devices; Culture media; Microbiological analysis.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-963.pdf
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Microbial flora in organic honey samples of africanized honeybees from Parana river islands Ciênc. Tecnol. Aliment.
Sereia,Maria Josiane; Alves,Eloi Machado; Toledo,Vagner de Alencar Arnaut de; Marchini,Luis Carlos; Faquinello,Patrícia; Sekine,Elizabete Satsuki; Wielewski,Priscila.
The purpose of this study was to verify and compare the main contamination sources and the hygienic/sanitary conditions of organic honey samples of Apis mellifera from Parana River islands. Thirty-three (33) samples were analyzed between January 2005 and August 2006. Eleven (11) samples were collected by beekeepers and twenty-two (22) samples were collected and processed in accordance with ideal personal hygiene norms and good manufacturing practices. The samples underwent microbiological analysis in search of coliforms at 35 ºC and 45 ºC, as well as fungi enumeration analysis. As for fungi counting, the samples harvested by beekeepers showed values above the maximum established by Resolution nº 15/94 of Common Market Group - Mercosul. The results showed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Microbiological analysis; Good manufacturing practice; Honey contamination; Fungi; Apis mellifera.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612011000200028
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Optimization of the osmotic dehydration of ginger Ciência Rural
Siqueira,Leonardo Pereira de; Sarubbo,Leonie Asfora; Shinohara,Neide Kazue Sakugawa; Valencia,Marcela Sarmento; Cortez,Neila Mello Santos; Andrade,Samara Alvachian Cardoso.
ABSTRACT: The present research aimed to optimize the process of osmotic dehydration (OD) of ginger with hypertonic sucrose solution employing response surface methodology. A 23 experimental planning was carried out and 17 experimental assays were performed based on three independent variables (temperature, concentration of the osmotic solution and immersion time) and three dependent variables (moisture loss (ML), solids gain (SG) and dehydration efficiency index (DEI)). The selected assay conditions exhibited the preferred DEI value (the highest ML and lower SG), which were considered in the optimization. Assay 16 demonstrated to be the most favorable conditions for the osmotic dehydration of ginger (DEI =1.61) at 40 40 °C, 50 °Brix and 90 minutes of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zingiber officinale Roscoe; Water loss; Microbiological analysis.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001000754
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Quality of royal jelly produced by Africanized honeybees fed a supplemented diet Ciênc. Tecnol. Aliment.
Sereia,Maria Josiane; Toledo,Vagner de Alencar Arnaut de.
This study was carried out to evaluate the effect of artificial supplements prepared with soybean protein isolate, brewer's yeast, mixture of soybean protein isolate with brewer's yeast, linseed oil, palm oil, and a mixture of linseed oil with palm oil on the physicochemical and microbiological composition of royal jelly produced by Africanized honey bee colonies. Considering these results, providing supplements for Africanized honeybee colonies subjected to royal jelly production can help and strengthen the technological development of the Brazilian beekeeping industry increasing its consumption in the national market. This research presents values of royal jelly a little different from those established by the Brazilian legislation. This fact shows that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Microbiological analysis; Physicochemical composition; Supplementation.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612013000200014
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Sampling for a bacteriological study of aquatic enrironments ArchiMer
Troussellier, M; Baleux, B; Andre, P.
Using water samples from several observation levels of a brackish lagoon, statistical solutions are offered for the sampling optimisation of bacteria viable counts. The variability between plate count is studied by the mean of the Taylor's power law. The sampling strategy optimisation, including several sources of variability, is realized by hierarchical analysis of variance and the estimation of the sampling cost of each source. This optimisation procedure results in a great increase of the relative efficiency of the sampling design and allow to obtain significant differences between the bacterial concentrations. The effect of the reduction of the total sampling effort on the precision of these average concentrations pointed out the scientific and...
Tipo: Text Palavras-chave: Bacteria; Abundance; Variance analysis; Microbiological analysis; Lagoons; Brackishwater environment; Bacterial counters; Biological sampling.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1984/acte-941.pdf
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Seasonal variation of microbial population from sediments of Vellar Estuary, South India. ArchiMer
Lakshmanaperumalsamy, P; Chandramohan, D; Natarajan, R.
A seasonal study on the occurrence and distribution of total aerobic microbial population (TMP), total aerobic heterotrophic bacteria (THB), actinomycetes and fungi in the sediments of Vellar Estuary, South India (11 degree 29'N 79 degree 46'E) was carried out during Jan. to Dec. 1975. Sediment samples were collected at monthly intervals, from 4 stations and analysed microbiologically. In general, bacterial population was found to be dominant followed by actinomycetes and fungi. The max peak for TMP, THB and fungi were recorded in Nov. in all stations. Monsoon season supported TMP, THB and fungi to a high level and it was summer for actinomycetes. Statistical analysis (Kendall's tau) showed a significantly positive correlation among TMP, THB, actinomycetes...
Tipo: Text Palavras-chave: Actinomycetes; Population number; Statistical analysis; Seasonal variations; Fungi; Bacteria; Sediment analysis; Microbiological analysis.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-943.pdf
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Selected bacterial strains protect <i>Artemia</i> spp. from the pathogenic effects of <i>Vibrio proteolyticus</i> CW8T2 OMA
Verschuere, L.; Heang, H.; Criel, G.R.J.; Sorgeloos, P.; Verstraete, W..
In this study <i>Vibrio proteolyticus</i> CW8T2 has been identified as a virulent pathogen for <i>Artemia</i> spp. Its infection route has been visualized with transmission electron microscopy. The pathogen affected microvilli and gut epithelial cells, disrupted epithelial cell junctions, and reached the body cavity, where it devastated cells and tissues. In vivo antagonism tests showed that pre-emptive colonization of the culture water with nine selected bacterial strains protected <i>Artemia</i> juveniles against the pathogenic effects. Two categories of the selected strains could be distinguished: (i) strains providing total protection, as no mortality occurred 2 days after the experimental infection with <i>V....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquatic animals; Bacteria; Biological control; Brine shrimp culture; Disease control; Infectious diseases; Microbiological analysis; Pathogenic bacteria; Artemia; Vibrio proteolyticus.
Ano: 2000 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=45
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