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Registros recuperados: 13
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Control of mycotoxigenic fungi with microcapsules of essential oils encapsulated in chitosan Ciênc. Tecnol. Aliment.
VILLEGAS-RASCÓN,Rocio Elizabeth; LÓPEZ-MENESES,Ana Karenth; PLASCENCIA-JATOMEA,Maribel; COTA-ARRIOLA,Octavio; MORENO-IBARRA,Griselda Macrina; CASTILLÓN-CAMPAÑA,Lucía Guadalupe; SÁNCHEZ-MARIÑEZ,Reyna Isabel; CORTEZ-ROCHA,Mario Onofre.
Abstract Aspergillus and Fusarium are the fungi genera most frequently isolated from cereal grains and other commodities. They are capable of producing mycotoxins, which can affect the human and animal health. Synthetic fungicides have been used to control these fungi, nevertheless, they have acquired resistance and other alternatives are necessary since they now need higher amounts. Therefore, the aim of this study was to evaluate the efficacy of cinnamon, clove and thyme essential oils (EOs) alone and encapsulated in chitosan on the radial growth, spore germination and mycotoxin production by Fusarium verticillioides and Aspergillus parasiticus. The composition of the EOs was determined by gas chromatography mass spectrometry (GC-MS). EOs inhibited...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aflatoxins; Fumonisins; Radial growth; Spore germination.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612018000200335
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Fumonisins B1 and B2 in corn-based products commercialized in the state of Santa Catarina - Southern Brazil BABT
Scaff,Rejane Maria Cirra; Scussel,Vildes Maria.
Corn flour, "canjica" (corn grits), corn flakes and popcorn for human consumption, commercialized in Santa Catarina (n=82), were analyzed in order to detect the presence of fumonisins B1 (FB1) and B2 (FB2). From the samples, 92.68% showed detectable levels of Fumonisins (FBs). Corn flour showed the highest level of contamination (91.5%) with average levels of 3.811 and 5.737 mg/g for the home-processed and industrialized products, respectively. The next most contaminated product was popcorn with a average of 2.872 mg/g and an occurrence in 91.6% of the samples. All samples of corn flakes were contaminated with an average of 1.307 mg/g. The product with the lowest levels of FBs was "canjica" with a average contamination of 0.732 mg/g. These results...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Corn; Fumonisins; Brazilian corn products.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000600011
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Fumonisins in corn: correlation with Fusarium sp. count, damaged kernels, protein and lipid content BABT
Ono,Elisabete Yurie Sataque; Biazon,Luciana; Silva,Marcelo da; Vizoni,Édio; Sugiura,Yoshitsugu; Ueno,Yoshio; Hirooka,Elisa Yoko.
Natural fungal and fumonisin contamination were evaluated in 109 freshly harvested corn samples from Paraná State and correlated to damaged kernels (%). In addition, healthy and damaged kernels of 24 corn samples were selected in order to compare the mycoflora profile and fumonisin levels. The correlation among protein/lipid content and fumonisin levels was also analyzed in the 15 most frequently cultivated corn hybrids. Total fungal colony count in 109 freshly harvested corn samples ranged from 1.9x10(4) to 3.5x10(6) CFU/g, Fusarium sp. count from 1.0x10³ to 2.2x10(6) CFU/g, and fumonisin levels from 0.13 to 20.38 µg/g. Total fungal colony/Fusarium sp. count and fumonisin levels showed positive correlation (p < 0.05). In addition, there was a positive...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mycoflora; Toxigenic fungi; Mycotoxins; Fumonisins; Corn quality.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000100008
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Fumonisins in corn cultivars in the state of São Paulo BJM
Camargos,Simone M.; Soares,Lucia M. Valente; Sawazaki,Eduardo; Bolonhezi,Denizart; Castro,Jairo L.; Bortolleto,Nelson.
Twenty three samples, belonging to 19 corn cultivars with distinct types of germoplasms, endosperm and length of vegetative cycle, were analyzed for fumonisins B1 and B2. The cultivars were grown in experimental fields in three locations (Votuporanga, Ribeirão Preto and Capão Bonito) within the State of São Paulo, Brazil, during the 97/98 crop. All samples were contaminated with fumonisins with concentrations ranging from 1.63 µg/g to 25.69 µg/g with an average of 5.61 µg/g for FB1 and from 0.38 µg/g to 8.60 µg/g with an average of 1.86 µg/g for FB2. In terms of fumonisins, these high levels put the corn cultivated in São Paulo among the most contaminated in the world reported to date.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mycotoxins; Fumonisins; Fusarium; Corn.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000300015
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Fusarium species and fumonisins associated with maize kernels produced in Rio Grande do Sul State for the 2008/09 and 2009/10 growing seasons BJM
Stumpf,R.; Santos,J. dos; Gomes,L.B.; Silva,C.N.; Tessmann,D.J.; Ferreira,F.D.; Machinski Junior,M.; Del Ponte,E.M..
Ear rots caused by Fusarium spp. are among the main fungal diseases that contribute to poor quality and the contamination of maize grains with mycotoxins. This study aimed to determine the visual incidence of fungal-damaged kernels (FDKs), the incidence of two main Gibberella (a teleomorph of Fusarium) complexes (G. fujikuroi and G. zeae) associated with maize using a seed health blotter test, and the fumonisin levels, using high performance liquid chromatography, in samples of maize grains grown across 23 municipalities during the 2008/09 and 2009/10 growing seasons. Additionally, 104 strains that were representative of all of the analysed samples were identified to species using PCR assays. The mean FDK was seven per cent, and only six of the samples had...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fusarium graminearum; Fusarium verticillioides; Fumonisins; Zea mays L.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100012
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Harvest delay leads to the increase total fumonisin levels and kernel rot of corn. Repositório Alice
COSTA, R. V. da; QUEIROZ, V. A. V.; COTA, L. V.; SILVA, D. D. da; LANZA, F. E.; ALMEIDA, R. E. M. de; PEREIRA, A. A.; CAMPOS, L. J. M..
The present work had as objective to evaluate the effect of the harvest delay in the contamination of corn grains with fumonisins and the incidence of kernel rot.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Milho; Zea Mays; Armazenamento; Corn; Fumonisins; Drying.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103684
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Harvest delay leads to the increase total fumonisin levels and kernel rot of corn. Repositório Alice
COSTA, R. V. da; QUEIROZ, V. A. V.; COTA, L. V.; SILVA, D. D. da; LANZA, F. E.; ALMEIDA, R. E. M. de; PEREIRA, A. A.; CAMPOS, L. J. M..
The present work had as objective to evaluate the effect of the harvest delay in the contamination of corn grains with fumonisins and the incidence of kernel rot.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Milho; Zea Mays; Armazenamento; Corn; Fumonisins; Drying.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1100684
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Incidência aflatoxinas e fumonisinas em produtos de milho comercializados em Sete lagoas, MG. Repositório Alice
QUEIROZ, V. A. V.; FERREIRA, P.; CONCEIÇÃO, R. R. P.; NEVES, J. F.; SILVA, C. S.; MIGUEL, R. A..
2013
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Micotoxina; Mycotoxins; Aflatoxins; Fumonisins.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/976435
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Incidência de fumonisinas totais em milho armazenado em paióis de produtores rurais da região Central de Minas Gerais. Repositório Alice
EL-CORAB NETO, J. I.; CONCEIÇAO, R. R. P. da; QUEIROZ, V. A. V.; CORREIA, V. T. da V.; SOUSA, A. P. de..
2016
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: FumoniTest; Micotoxina; Zea mays; Fumonisins; Mycotoxins.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1054999
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Mycoflora and aflatoxin/fumonisin production by fungal isolates from freshly harvested corn hybrids BJM
Almeida,Adriana P.; Corrêa,Benedito; Mallozzi,Marisa A. B.; Sawazaki,Eduardo; Soares,Lúcia M. Valente.
The mycoflora of 3 hybrids of freshly harvested corn grains collected from three regions of the state of São Paulo, Brazil (Assis, Capão Bonito and Ribeirão Preto) was investigated. A total of 66 samples were analyzed focusing on the influence of abiotic factors (moisture content, water activity, temperature and rainfall) on both the prevalence of Aspergillus flavus and Fusarium moniliforme, and the ability of these genera isolates to produce aflatoxins and fumonisins, respectively. In the three surveyed regions, the fungal population comprised mainly Fusarium spp., Penicillium spp., Aspergillus spp. and 2 others filamentous fungal genera, which were isolated from corn kernels showing water activity of 0.30 to 0.99 and moisture content of 5.0% to 20.2%....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aflatoxins; Aspergillus flavus; Fumonisins; Fusarium moniliforme; Corn.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000400016
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Occurrence of Fusarium moniliforme and fumonisins in kernels of maize hybrids in Venezuela BJM
Mazzani,Claudio; Borges,Orángel; Luzón,Odalís; Barrientos,Venancio; Quijada,Pablo.
Fusarium moniliforme (FM) incidence and fumonisins (FUM) content were determined in white kernel samples of maize hybrids, harvested in farms of Guárico and Portuguesa states, Venezuela. FM incidence was estimated in subsamples placed on a malt-salt-agar medium. Values in the range of 0-15 % were considered low, from 15-30% intermediate, and more than 30% high. FUM content was quantified through specific immunoassay (Fumonitest, VICAM Sci. Tech., USA) and values above 1 ppm were considered high. The hybrids were compared using a completely randomized design and results were subjected to analysis of variance and mean comparisons. The correlation between FUM content and FM incidence was also estimated. FM and FUM were detected in all of the 89 samples. Mean...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fusarium moniliforme; Fumonisins; Venezuelan maize; Hybrids.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000400018
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Production of fumonisins by strains of Fusarium moniliforme according to temperature, moisture and growth period BJM
Dilkin,Paulo; Mallmann,Carlos A.; Almeida,Carlos A.A. de; Stefanon,Eliza B.; Fontana,Fernanda Z.; Milbradt,Elisane L..
Production of fumonisins B1 (FB1) and B2 (FB2) by two Brasilian strains (LAMIC 2999/96 and 113F) and one American strain (NRRL 13616) of Fusarium moniliforme were evaluated in laboratory cultures subjected to different temperatures (20, 25, and 30ºC), and moisture contents (25, 34, and 42%) on corn substrate. The cultures were grown during 10, 20, 30, 45, and 60 days, totalizing 135 treatments with two repetitions for each one. The fumonisins were extracted with acetonitrile/water. The clean-up with end-capped C18 silica (C18ec) cartridges and fumonisin derivatization with o-phtaldialdeyde were carried out through an automated sample processor system (ASPEC), followed by quantification of the toxins through HPLC. Fumonisin production varied widely,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fungi; Fusarium moniliforme; Mycotoxins; Fumonisins; Abiotic factors.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000200003
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Teor de fumonisinas em genótipos de milho avaliados em ambientes com alta e baixa disponibilidade de fósforo no solo. Repositório Alice
GUIMARÃES, M. C.; QUEIROZ, V. A. V.; GUIMARAES, L. J. M.; NEVES, J. F.; MIGUEL, R. A.; PEREIRA, G. M..
2013
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Micotoxina; Fósforo; Zea mays; Mycotoxins; Phosphorus; Fumonisins.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/976482
Registros recuperados: 13
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