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| Registros recuperados: 40 | |
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| Acosta, Mercedes; Guevara, Miguel; Crescente, Óscar. |
| Los hongos marinos se han convertido en una fuente importante de metabolitos farmacológicamente activos. Los extractos en acetato de etilo de los hongos Fusarium camptoceras y Aspergillus flocculosus fueron evaluados para determinar su actividad antibacteriana, antifúngica, fototóxica y tóxica contra Artemia franciscana. Los hongos fueron cultivados bajo condiciones estáticas en agar CYA durante 14 días a 27 °C, y luego extraídos en acetato de etilo por siete días. Los extractos de ambas especies fúngicas mostraron una importante actividad antibacteriana contra bacterias Gram positivas y Gram negativas, con halos de inhibición que alcanzaron los 30 mm de diámetro. La actividad fototóxica estuvo ausente y sólo se observó actividad antifúngica en el extracto... |
| Tipo: Journal Contribution |
Palavras-chave: Active; Fusarium; Aspergillus. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4380 |
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| Narloch,Charles; Oliveira,Vetúria Lopes de; Anjos,Jonas Ternes dos; Silva Filho,Germano Nunes. |
| O objetivo deste trabalho foi estudar o efeito dos fungos solubilizadores de fosfatos MSF-044, MSF-062 (Penicillium sp.) e MSF-087 (Aspergillus sp.) e da aplicação de fosfato solúvel [Ca(H2PO4)2.2H 2O], nas doses de 0,0 , 4,5 , 9,0 , 17,5 , 35,0 , 70,0 e 140,0 mg kg-1 de P, na produção de matéria seca e na absorção de fósforo pela cultura do rabanete. O experimento foi realizado em solo não-estéril, em casa de vegetação. Os isolados diferiram quanto à capacidade de promover a produção de matéria seca, dependendo da dose de P aplicada. Os isolados MSF-044 e MSF-062 foram mais eficientes sob baixas doses (4,5 a 17,5 mg kg-1 de P), enquanto o isolado MSF-087 proporcionou maior produção de matéria seca somente na dose mais alta (140,0 mg kg-1 de P). Plantas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Raphanus sativus; Fósforo; Solubilização; Aspergillus; Penicillium. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002000600013 |
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| Silva,André Ribeiro da; Zanin,Lívia Montanheiro Médici; Ishikawa,Angélica Tieme; Yamashita,Cassia Reika Takabayashi; Fracalossi,Felipe Pedote; Amorim,Thaís Marques; Itano,Eiko Nakagawa; Kawamaura,Osamu; Hirooka,Elisa Yoko. |
| Abstract: The objective of this work was to standardize and validate an indirect competitive enzyme-linked immunosorbent assay (ic-Elisa), as a low-cost tool, to monitor the presence of aflatoxin in common and blanched peanuts (Arachis hypogaea) in the production chain. The presence of aflatoxin B1, moisture content, and water activity were analyzed in 60 samples of the peanut cultivar Runner IAC 886, from the 2014/2015 and 2015/2016 harvests of the region of Alta Paulista, in the state of São Paulo, Brazil. The validation showed an adequate linearity (R2 = 0.999), and limits of detection and quantification of 1.13 and 3.59 μg kg-1, respectively. Recovery rates of 104, 102, and 107% at the concentrations of 4, 10, and 20 μg kg-1 aflatoxin B1, respectively,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspergillus; Aflatoxin B1; Blanched peanuts; Contamination; Mycotoxin. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000300361 |
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| Souchie,Edson Luiz; Azcón,Rosario; Barea,Jose Miguel; Saggin-Júnior,Orivaldo José; Silva,Eliane Maria Ribeiro da. |
| The objective of this work was to evaluate the ability of several P-solubilizing fungi to solubilize aluminum phosphate and Araxá apatite as well as the synergism between the P-solubilizing fungus, PSF 7, and arbuscular mycorrhizal fungi to promote clover growth amended with aluminum phosphate. Two experiments were carried out, the first under laboratory conditions and the second in a controlled environmental chamber. In the first experiment, PSF 7, PSF 9, PSF 21 and PSF 22 isolates plus control were incubated in liquid medium at 28ºC for eight days. On the 2nd, 4th and 8th day of incubation, pH and soluble P were determined. In the second experiment, clover was sowed in plastic pots containing 300 g of sterilized substrate amended with aluminum phosphate,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspergillus; Trifolium pratense; Araxá apatite; Aluminum phosphate; Symbiosis; Glomus. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006000900009 |
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| Souchie,Edson Luiz; Azcón,Rosario; Barea,Jose Miguel; Saggin-Júnior,Orivaldo José; Silva,Eliane Maria Ribeiro da. |
| O objetivo deste trabalho foi avaliar a capacidade e a eficiência de solubilização de CaHPO4, AlPO4 e apatita de Araxá em meio sólido, e de AlPO4 e apatita de Araxá em meio líquido, por fungos (Aspergillus) e bactérias (Enterobacteriaceae) do solo. Em meio sólido, todos solubilizaram CaHPO4, nenhum solubilizou apatita de Araxá e apenas o isolado de fungo FSF 7 solubilizou AlPO4. Em meio líquido, todos solubilizaram AlPO4 e apatita de Araxá. A seleção de solubilizadores deve ser feita com a quantificação do potencial de solubilização em meio líquido. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspergillus; Enterobactérias; Fósforo; Meio de cultivo; Apatita. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005001100015 |
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| Cruz,Roberta; Ramos,Sérgio Murilo Sousa; Fonseca,Julyanna Cordoville; Motta,Cristina Maria de Souza; Moreira,Keila Aparecida. |
| ABSTRACT The Caatinga biome features an exclusive endemic biodiversity, and is characterized by the presence of xerophytic, deciduous vegetation, high temperatures, and low rainfall. This important park has undergone anthropization, especially through extraction of firewood and timber and growing plants for raising goats. The objectives of this study were to compare the communities of filamentous fungi present in the preserved area and in the anthropized soil of the Catimbau National Park in Buíque, PE, Brazil, and to evaluate the impacts of anthropization on such communities. A total of 12 collections of soil samples were made, six in the preserved area and six in the anthropic area, and the physicochemical properties of the soil samples were analyzed.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caatinga; Diversity; Aspergillus; Gongronella; Penicillium. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100419 |
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| Borém,Flávio M.; Resende,Osvaldo; Machado,José da C.; Fontenelle,Isa M. R.; Sousa,Frederico F. de. |
| Objetivou-se, no presente trabalho, avaliar a eficácia de um equipamento redutor de inóculo (ERI) na preservação da qualidade sanitária de sementes de feijão (Phaseolus vulgaris L.) durante o armazenamento em estruturas herméticas com circulação de ar forçado. A presença de inóculo no ar foi monitorada a partir da exposição de placas de Petri com meio de cultura BDA salino, contando-se o número de unidades formadoras de colônias (UFC) dos fungos Aspergillus spp. e Penicillium spp. As análises sanitárias das sementes foram realizada pelo método do papel de filtro (Blotter test), calculando-se o índice de ocorrência de Aspergillus spp. e Penicillium spp. Durante o período de armazenamento, houve um aumento na incidência de fungos nas sementes, independente... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Equipamento redutor de inóculo; Sanidade de sementes; Aspergillus. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662006000300017 |
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| Gomes,Eleni; Silva,Roberto da; Serzedello,Alcides. |
| Ribonuclease production by Aspergillus flavipes, A. sulphureus and A. fischeri in semi-synthetic medium, after 24-144 hours at 30ºC under shaking, was studied. After cultivation, the medium was separated from micelia by filtration and the resultant solution was used as enzymatic extract. The highest amount of biomass and RNase was obtained after 96 hours of cultivation. The enzymes produced by three species presented similar characteristics, with optimum temperature at 55ºC and two peaks of activity at pH 4.5 and 7.0. A. flavipes RNases were more sensitive to temperature: 50% of the initial activity was lost after 1 hour at 70ºC. After this heat treatment, RNase of A. sulphureus lost 30% of this activity and that of A. fischeri only 16%. The nucleotides... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ribonucleases; Aspergillus; Nucleotides. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141998000300008 |
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| Pinheiro,Eduardo A.A.; Carvalho,Josiwander M.; Santos,Diellem C.P. dos; Feitosa,André O.; Marinho,Patrícia S.B.; Guilhon,Giselle Maria S.P.; Santos,Lourivaldo S.; Souza,Afonso L.D. de; Marinho,Andrey M.R.. |
| The present work reports the isolation of five compounds from Aspergillus sp EJC08 isolated as endophytic from Bauhinia guianensis, a tipical plant of the Amazon. The compounds ergosterol (1), ergosterol peroxide (2), mevalolactone (3), monomethylsulochrin (4) and trypacidin A (5) were isolated by chromatographic procedures and identified by spectral methods of 1D and 2D NMR and MS. Compounds 3, 4 and 5 were tested against Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis and Staphylococcus aureus and showed good activity. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical constituents; Antimicrobial assay; Aspergillus; Bauhinia guianensis. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401247 |
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| Xavier,M.O.; Nogueira,C.E.W.; Meirelles,M.; Fernandes,W.R.; Andreolla,H.; Severo,L.C.; Pasqualotto,A.C.; Meireles,M.C.A.. |
| This study aims to compare the concentration of viable fungi, especially those of the genus Aspergillus in the respiratory tract of stabled horses with and without Recurrent Airway Obstruction (RAO). Thirty two housed horses from four equestrian centers in Brazil were included in the study. These animals were submitted to clinical examination and to a respiratory sample collection. They were categorized into two groups: healthy and RAO-affected horses. Samples obtained by tracheobronchial washes were evaluated for fungal microscopy, quantitative culture and Aspergillus spp. quantification. Eighteen healthy and 14 RAO-affected horses were studied. Fungi were more frequently recovered in the RAO group, in comparison to controls, for both fungal microscopy... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspergillus; Tracheobronchial washes; Respiratory allergy. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000501457 |
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| Registros recuperados: 40 | |
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