|
|
|
| Registros recuperados: 47 | |
|
|
| Giolo,Marcel Padovani; Oliveira,Christiane Minervino de; Bertolini,Dennis Armando; Lonardoni,Maria Valdrinez Campana; Gouveia,Matheus Sampaio; Netto,Daisy Pontes; Nixdorf,Suzana Lucy; Machinski Junior,Miguel. |
| Exposure to aflatoxins (AFs) in the diet may favour the development of hepatocellular carcinoma (HCC) and the acute exacerbation of hepatitis in chronic hepatitis B virus (HBV) carriers. Measurement of biomarkers such as aflatoxin M1 (AFM1), a metabolite of aflatoxin B1 (AFB1), in urine allows for the assessment of populations exposed to aflatoxins. The aim of this study was to investigate the occurrence of aflatoxin M1 in the urine of HBV carrier and non-carrier patients. One group included 43 randomly selected HBV carriers treated at two hospitals in the city of Maringa, Brazil, from March to June 2008. Control group consisted of 29 healthy adult volunteers with anti-HBs positive and HBsAg negative test results. Detection of AFM1 was performed by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aflatoxins; Biomarkers; Hepatitis B; Hepatocellular carcinoma; Urina/análise toxicológica; Epidemiology. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502012000300011 |
| |
|
|
| Kipper,Marcos; Andretta,Ines; Ribeiro,Andréa Machado Leal; Pires,Paula Gabriela da Silva; Franceschina,Carolina Schell; Cardinal,Kátia Maria; Moraes,Priscila de Oliveira; Schroeder,Bruna. |
| ABSTRACT: The effects of mycotoxins on the productive performance of growing pigs and broilers were evaluated using meta-analytical approach. Two databases were constructed: (1) Broilers, with information collected from 51,497 birds and published in 158 scientific papers from 1980 to 2016; and (2) Pigs, with information collected from 7,743 animals and published in 72 scientific papers from 1980 to 2015. The meta-analyses were performed independently for each specie, following three sequential analyses: graphical, correlation, and variance-covariance. Broilers and pigs challenged by mycotoxins reduced (p < 0.05) feed intake by 9 and 6 %, weight gain by 15 and 11 %, and feed efficiency by 6 and 4 % compared with non-challenged animals, respectively.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aflatoxins; Deoxynivalenol; Nutrition; Poultry; Piglet. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000300400 |
| |
|
|
| Gonçalez,E.; Felicio,J.D.; Pinto,M.M.. |
| The biflavonoids 6,6"-bigenkwanin, amenthoflavone, 7,7"-dimethoxyagastisflavone and tetradimethoxybigenkwanin isolated from Ouratea species were tested for inhibitory activity on Aspergillus flavus cultures. Suspensions of Aspergillus flavus spores were inoculated into 50 ml of YES medium at different biflavonoid concentrations: 5 and 10 µg/ml for 6,6"-bigenkwanin, amenthoflavone and 7,7"-dimethoxyagastisflavone, and 5, 10, 15 and 20 µg/ml for tetradimethoxybigenkwanin. The four biflavonoids showed inhibitory activity on aflatoxin B1 and B2 production (P<0.001), but did not inhibit fungal growth at the concentration tested (P>0.05). These results show that biflavonoids can be used for the development of agents to control aflatoxin production. |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Ouratea sp; Aspergillus flavus; Biflavonoids; Aflatoxins. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001001100013 |
| |
|
|
| CARTAXO, C. B. da C.; SUASSUNA, T. de M. F.; GONDIM, T. M. de S.. |
| O amendoim é uma cultura oleaginosa que constitui importante fonte de óleos e proteínas para populações do Mali e do Brasil. Em ambos os países, é produzido, principalmente, por pequenos produtores, em áreas que variam de 0,3 ha a 5 ha, com espaçamentos entrelinhas de, aproximadamente, 0,50 m, utilizando-se de 10 a 20 sementes por metro e gastando-se em torno de 90 kg de sementes/ha. A contaminação por aflatoxinas é o principal problema associado à cultura e está intimamente ligada ao crescimento de fungos (bolores) que se desenvolvem, favorecidos pelas condições climáticas nos dois países. |
| Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) |
Palavras-chave: Boas práticas; Brasil; Aflatoxinas; Prevención de enfermedades.; Crecimiento microbiano; Amendoim; Arachis hypogaea; Produção; Contaminação fúngica; Aflatoxina; Microbial growth; Aflatoxins; Disease prevention; Mali.. |
| Ano: 2017 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1086125 |
| |
|
| |
|
| |
|
|
| Ono,Elisabete Yurie Sataque; Silva,Marcelo da; Ribeiro,Ricardo Marcelo Reche; Ono,Mario Augusto; Hayashi,Luciana; Garcia,Glauco Tironi; Hirooka,Elisa Yoko. |
| In this study the bright greenish-yellow fluorescence test, widely used by the corn milling industry, was compared to the thin-layer chromatography (TLC) and spectrofluorimetry methods for aflatoxin detection in 40 corn samples naturally contaminated by the Aspergillus section Flavi. According to the corn processing industry criteria, all the samples were adequate for human and animal consumption by the bright greenish-yellow fluorescence test, but TLC and spectrofluorimetry analysis detected aflatoxins above the maximum tolerated limit (20 µg/kg) in 7 and 8 samples, respectively. Aflatoxins were detected in 16 (40%) corn samples by TLC, with levels ranging from 4.0 to 54.0 µg/kg (mean 19.97 ± 15.97 µg/kg), and in 25 (62.5%) samples by spectrofluorimetry,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Thin-Layer Chromatography; Spectrofluorimetry; BGYF; Aflatoxins; Corn; Mycotoxins. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000300025 |
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Piedade,Fabiana Segatti; Fonseca,Homero; Gloria,Eduardo Micotti da; Calori-Domingues,Maria Antonia; Piedade,Sônia Maria Stefano; Barbin,Décio. |
| The aflatoxin distribution in corn fractions obtained after visual segregation for defects in 30 samples, known to be contaminated, was studied. Each sample was passed through a 5.0 mm round holes sieve, graded for defects and then segregated in sound kernels (regular kernels) and non-sound kernels (injured, germinated, fermented, moldy, heated, insect damaged, immature, broken, hollow, fermented up to ¼, discolored, extraneous materials, and injured by other causes), as defined by the Brazilian Official Grading rules for corn. The non-sound kernels showed the highest contamination levels in all samples. The contamination levels of non-sound kernels (20% of total weight) ranged from 23 to 1,365 µg/kg of aflatoxins (B1, B2, G1 and G2) and were higher than... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aflatoxins; Corn; Contamination distribution; Visual segregation; Fraction. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000300013 |
| |
|
|
| Herzog-Soares,Joanna D'Arc A; Freire,Ronald Bastos. |
| Macrophages exposed to 10 mug/mL citrinin (CTR) or 0.01 mug CTR mixed with 0.04 mug aflatoxin B1 (AFB1) for a period of 2 h at 37ºC, were infected with 10(6) Toxoplasma gondii tachyzoites/muL. The parasites were treated with mycotoxins (2 h at 37ºC) before being added to the macrophage culture. The number of tachyzoites was quantified 2, 24, 48, 72 and 96 h after infection. During the first 2 hours, 59% infectivity was observed in the control. After exposure to CTR or the mixture of toxins (CTR-AFB1), macrophages were infected with 77.5% and 75% of the inoculated tachyzoites, respectively. Similarly, 72.3% of the cells were infected when cultured together with previously treated parasites. The treatment with CTR-AFB1 gave rise to 2.9 times more tachyzoites... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aflatoxins; Imunossuspression; Macrophages; Citrinin; Toxoplasma gondii. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000100007 |
| |
|
| |
|
|
| Chalfoun,Sára Maria; Pereira,Marcelo Cláudio; Resende,Mario Lúcio V.; Angélico,Caroline Lima; Silva,Rozane Aparecida da. |
| The effect of ten powdered spice plants was evaluated at the concentration of 1, 2, 3 and 4% to observe the mycelial growth and sporulation of Aspergillus niger and Eurotium repens. The spices were added to the culture media PDA and CYA20S. Clove completely inhibited the mycelial growth of the tested fungi. The other spices: cinnamon, garlic, thyme, mint, anis, oregano and onion were, in a decreasing order, promising antifungals. Bay leaf and basil did not show a pronounced fungistatic effect. The antitoxigenic potential of the spices was tested against one aflatoxin-producing strain of AspergiIIus flavus. The spices were tested at the same concentrations previously mentioned and were added to the culture medium YES, appropriate for the production of those... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spices; Aflatoxins; Control; Fungi. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542004000400018 |
| |
|
| |
|
| |
|
|
| Marques, Odair José; UEM; Vidigal Filho, Pedro Soares; UEM; Dalpasquale, Valdecir Antoninho; UEM; Scapim, Carlos Alberto; UEM; Pricinotto, Luiz Fernando; UEM; Machinski Júnior, Miguel; UEM. |
| O objetivo deste trabalho foi avaliar a incidência de fungos dos gêneros Aspergillus, Fusarium e Penicillium e as contaminações com micotoxinas em grãos de cinco híbridos comerciais de milho em função da umidade de colheita. O trabalho foi conduzido em Astorga, Estado do Paraná, durante o período da ‘safrinha’ de 2007 e da safra de ‘verão’ de 2007/2008. As amostras de grãos, colhidas em cinco épocas distintas e em cinco repetições, foram submetidas à determinação de umidade pelo método da estufa a 103 ± 1ºC por 72h. O teste de sanidade Blotter test e a quantificação micotoxinas (método da cromatografia em camada delgada) foram efetuados, utilizando-se um delineamento inteiramente casualizado. Os resultados obtidos foram submetidos à análise de... |
| Tipo: Pesquisa Empírica de Campo |
Palavras-chave: 5.01.03.04-0 Produção de Mudas Zea mays L.; Pós-colheita; Qualidade; Aflatoxinas; Zearalenona Fitotecnia Zea mays L.; Post-harvest; Quality; Aflatoxins; Zearalenone. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5690 |
| |
|
|
| MARTINS,Hermínia Marina; MARTINS,Maria Lígia; BERNARDO,Fernando Almeida. |
| Aflatoxins production is affected by abiotic, biotic and genetic parameters. Eugenesic and dysgenetic condition for aflatoxinogenesis are relatively well studied, such as: the influence of temperature, pH, Aw, Oxigen tension, osmotic pression, organic and inorganic nutrients, substance with fungistatic effects: however there are relatively few knowledge about endogenous regulator mechanisms, the kinetic of the anabolism and the interaction between the productive moulds and remaining microflora holding in eutrophying substrates. The main objective of this study is to evaluate biotic interaction between five indigenous strains of A. flavus, confirmed non-toxigenic, and a productive strain (A. parasiticus ATCC 15 517), cultured simultaneously on two... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant interaction; Aflatoxins; Vegetal production; Aspergillus flavus; Aspergillus parasiticus. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962000000600003 |
| |
|
| |
| Registros recuperados: 47 | |
|
|
|
