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Registros recuperados: 12
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Anti-Fusarium moniliforme activity and fumonisin biodegradation by corn and silage microflora BABT
Camilo,Simone B.; Ono,Carlos José; Ueno,Yoshio; Hirooka,Elisa Y..
Studies were carried out to isolate microorganisms from corn and silage screened for their ability to inhibit F. moniliforme growth (strain 113F) in association with fumonisin detoxification. Among 150 isolates four Gram-positive bacilli and one yeast with inhibitory activity were selected. The inhibition zone ranged from 50 to 72.5 mm using cultures, and from 25 to 52.5mm for crude alcoholic extract. The isolates S9, S10, S69 (sporulated bacilli) and SE3071 (yeast) degraded 43, 48, 83 and 57% of the initial FB1 concentration, respectively. The pH increased gradually in the medium during incubation for biodegradation process.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fusarium moniliforme; Fumonisin; Biodegradation.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000200004
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Association of the severity of tongue lesions in broiler chickens with the quality of corn in feed PAB
Vaccari,Isabel Cristina Mores; Duarte,Vinicius; Rodrigues,Denise Russi; Santos,Fabiana Ramos dos; Minafra,Cibele Silva.
Abstract: The objective of this work was to determine the correlation of the physical attributes of corn and the mycotoxins present in its grains with the severity of tongue lesions in broiler breeder roosters. The occurrence of the aflatoxin, vomitoxin, zearalenone, T-2 toxin, and fumonisin mycotoxins was detected in the corn grains used in the feed formulation for breeder chickens. The percentages of moisture and broken grains were positively correlated (Pearson’s correlation) with the presence of aflatoxin. Milder lesions (grade 1) are positively correlated with aflatoxin and negatively correlated with fumonisin, and the most severe lesions (grade 3) are positively correlated with vomitoxin, fumonisin, and T-2 toxin.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aflatoxin; Aviculture; Fumonisin; Mycotoxin; T-2 toxin; Vomitoxin..
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001000942
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Can Bt Maize Reduce Exposure to the Mycotoxin Fumonisin in South Africa? AgEcon
Pray, Carl E.; Rheeder, John; Gouse, Marnus; Volkwyn, Yvette; van der Westhuizen, Liana; Shephard, Gordon.
The mycotoxin fumonisin is associated with oesophageal cancer and birth defects. The Eastern Cape province of South Africa has high levels of fumonisin in maize and oesophageal cancer. This study measures the amounts of the mycotoxin fumonisin in the grain of Bt maize, commercial hybrids, and farmer-saved, local mixtures of seed that were produced and stored by small holders in South Africa. We find that adoption of Bt maize can reduce poor rural consumers exposure to fumonisin. Greater consumption of maize meal milled in modern mills could have a similar impact.
Tipo: Conference Paper or Presentation Palavras-chave: Bt maize; Mycotoxins; Fumonisin; South Africa; Agricultural and Food Policy; Health Economics and Policy; International Development.
Ano: 2009 URL: http://purl.umn.edu/51739
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Detection of fumonisin producing Fusarium verticillioides in paddy (Oryza sativa L.) using polymerase chain reaction (PCR) BJM
Maheshwar,P.K.; Moharram,S. Ahmed; Janardhana,G.R..
The study reports the occurrence of fumonisin producing Fusarium verticillioides in 90 samples of stored paddy (Oryza sativa L.)collected from different geographical regions ofKarnataka, India. Fumonisin producing F. verticillioides was identified based on micromorphological characteristics and PCR using two sets of primers. One set of primers was F. verticillioides species specific, which selectively amplified the intergenic space region of rDNA. The other set of primers was specific to fumonisin producing F. verticillioides. Eight paddy samples were positive for F. verticillioides. Eleven isolates obtained from these samples were capable of producing fumonisin.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fusarium verticillioides; Fumonisin; Paddy; PCR.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000100023
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Equine leukoencephalomalacia associated with ingestion of corn contaminated with fumonisin B1 Rev. Microbiol.
Mallmann,Carlos A.; Santurio,Janio M.; Dilkin,Paulo.
This article describes clinical, etiologic and pathologic diagnosis of an outbreak of equine leukoencephalomalacia. Two samples of the corn consumed by the affected horses contained fumonisin B1 at levels of 46 and 53 µg/g and Fusarium moniliforme, a good in vitro mycotoxin producer.
Tipo: Info:eu-repo/semantics/other Palavras-chave: Corn; Leukoencephalomalacia; Fumonisin; Fusarium moniliforme; Chromatography.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000300011
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Fusarium verticillioides strains isolated from corn feed: characterization by fumonisin production and RAPD fingerprinting BABT
Ono,Elisabete Yurie Sataque; Fungaro,Maria Helena Pelegrinelli; Sofia,Silvia Helena; Miguel,Tatiana de Ávila; Sugiura,Yoshitsugu; Hirooka,Elisa Yoko.
In this study a total of 16 Fusarium verticillioides strains isolated from corn feed samples were characterized by fumonisin (FB) production and random amplified polymorphic DNA (RAPD). All the strains produced FB1 and FB2 with levels ranging from 2.41 to 3996.36 µg/g, and from 1.18 to 1209.91 µg/g, respectively. From the 16 F. verticillioides strains, four were identified as low (3.59 to 1289.84 µg/g), eight as intermediate (>1289.84 to 3772.44 µg/g) and four strains as high (>3772.44 µg/g) fumonisin producers. From the total of 105 loci amplified, 60 (57.14%) were polymorphic. RAPD analysis showed very similar patterns among low, moderate and high fumonisin-producing strains. Although RAPD markers were capable of discriminating the different F....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fumonisin; Fusarium verticillioides; Genetic variability; RAPD.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000400026
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Integrating fungicide and biocontrol foliar spray on maize grain yield and fumonisin content. Repositório Alice
GUIMARÃES, R. A.; ZANOTTO, E.; ZANOTTO, L. A. S.; MACHADO, J. C.; MELO, I. S. de; VON PINHO, R. G.; PINTO, F. A. M. F.; FORTÊS, P. H. O. S.; MEDEIROS, H. N.; MEDEIROS, F. H. V..
The adoption of biocontrol is low in maize production, although it has been reported reduction in fumonisin levels when combined with fungicides. The objective of this work was to evaluate the potential of Streptomyces araujoniae (BC1) and Bacillus sp. (BC2) combined or not with the fungicide azoxystrobin+ciproconazol (FG), on grain yield, Fusarium verticillioides incidence and fumonisin (B1 and B2) content. Maize plants were sprayed two times, at V9 and R1 with Water, BC1, BC2, Fungicide alone or in different combinations two by two. All plants were inoculated with F. verticillioides. Upon harvest, treatments were evaluated for total yield, F. verticillioides grain contamination (blotter test) and total fumonisin (B1+B2) contents. FG (V9) + BC1 (R1)...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Fumonisin; Controle biológico; Biological control; Integrated management.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1068010
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Leukoencephalomalacia in horses associated with immature corn consumption Ciência Rural
Echenique,Joanna Vargas Zillig; Estima-Silva,Pablo; Pereira,Daniela Brayer; Marques,Lucas Santos; Ribeiro,Luiza Soares; Schild,Ana Lucia.
ABSTRACT: Horse leukoencephalomalacia (ELEM) is a disease caused by the ingestion of mycotoxins (fumonisins) produced by fungi of the genus Fusarium that infect corn and/or its byproducts. This disease has been described by ingestion of mature corn with humidity above 15% at temperatures below 20°C. The aim of this paper was to report an outbreak of leukoencephalomalacia in horses fed with immature corn. Two horses out of three showed neurological signs approximately seven days after eating immature corn in its reproductive phase (R2, milky grains). Corn was harvested and administered directly to the animals, with no storage. Deaths occurred approximately 24 hours after the onset of clinical signs. Grossly, there were multifocal dark red to brown areas in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fumonisin; Water activity; Cereals; Central nervous system; Horse..
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000300551
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Mycotoxin contamination of diets for beef cattle finishing in feedlot R. Bras. Zootec.
Custódio,Letícia; Prados,Laura Franco; Yiannikouris,Alexandros; Holder,Vaughn; Pettigrew,James; Kuritza,Leandro; Resende,Flávio Dutra de; Siqueira,Gustavo Rezende.
ABSTRACT The objective of this survey was to identify what mycotoxins were present in ingredients used in diets offered to beef cattle in feedlots and their concentrations. The survey covered 30 Brazilian feedlots located in the five major beef-producing states. Samples of total mixed ration (TMR) and ingredients were collected and analyzed for mycotoxin using ultra-performance liquid chromatography coupled to tandem mass spectrometry. Mycotoxin concentrations were further interpreted according to known species-specific sensitivities and normalized according to the principles of toxic equivalent factors (risk equivalent quantities - REQ) expressed in µg kg−1 of aflatoxin B1-equivalent. Forty percent of the visited feedlots had apparent fungi in TMR....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aflatoxin; Beef cattle; Feedlots; Fumonisin; Ingredients.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100724
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Performance and egg quality of laying hens fed diets containing aflatoxin, fumonisin and adsorbent Rev. Bras. Ciênc. Avic.
Siloto,EV; Sartori,DRS; Oliveira,EFA; Sartori,JR; Fascina,VB; Berto,DA.
The effects of aflatoxin and fumonisin and their combination on egg production and quality, as well as the efficacy of a mycotoxin adsorbent in reducing or eliminating these effects in commercial layers. A number of 168 layers with initial age of 37 weeks were submitted to an experimental period of 56 days. A completely randomized experimental design in a 3x2+1 factorial arrangement was applied (3 treatments with mycotoxins: aflatoxin (AF), fumonisin (FU), or aflatoxin + fumonisin (AF+FU); 2 treatments with or without adsorbent; and a control group that was fed no mycotoxins, nor adsorbent), totaling 7 treatments with 6 replicated of 4 birds/cage. The dietary inclusion levels were 1ppm AF, 25ppm FU, and 2 kg adsorbent/ton feed. Birds fed AF presented the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Adsorbent; Aflatoxin; Fumonisin; Layers; Performance.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100004
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Production of aflatoxins by Aspergillus flavus and of fumonisins by Fusarium species isolated from Brazilian sorghum BJM
Silva,Josefa B. da; Dilkin,Paulo; Fonseca,Homero; Corrêa,Benedito.
Fifty-nine Aspergillus flavus and 35 Fusarium verticillioides strains, isolated from freshly harvested (10) and stored (130) Brazilian sorghum samples, were tested regarding their ability to produce aflatoxins (coconut milk agar) and fumonisins (rice culture), respectively. Aflatoxins B1 and B2 were detected by TLC, and fumonisins B1 and B2 were analyzed by HPLC. Thirty-eight (64.4%) A. flavus strains produced detectable levels of aflatoxins at concentrations ranging from 12.00 to 3282.50 µg/kg (AFB1 + AFB2), while thirty two (91%) F. verticillioides strains produced FB1 at concentrations ranging from 0.12 to 5.38 µg/g. Two F. proliferatum strains produced low fumonisin levels. The toxigenic potential of A. flavus (64.4%) and F. verticillioides (91.5%)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Toxigenicity; Aspergillus flavus; Fusarium verticillioides; Mycotoxins; Sorghum; Aflatoxin; Fumonisin.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000200002
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The application of PCR in the detection of mycotoxigenic fungi in foods BJM
Konietzny,Ursula; Greiner,Ralf.
It is estimated that 25 to 50% of the crops harvested worldwide are contaminated with mycotoxins. Because of the toxic and carcinogenic potential of mycotoxins, there is an urgent need to develop detection methods that are rapid and highly specific. The highly advanced physico-chemical methods for the analysis of mycotoxins in use, have the disadvantage that highly sophisticated clean-up and/or derivatization procedures must be applied. An alternative could be the detection of the mycotoxigenic moulds themselves, especially as molecular techniques have been introduced recently as powerful tools for detecting and identifying fungi. PCR methods for the detection of aflatoxigenic Aspergilli, patulin-producing Penicillum and trichothecene- as well as...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aflatoxin; Fumonisin; Patulin; Polymerase chain reaction; Trichothecene.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000400001
Registros recuperados: 12
Primeira ... 1 ... Última
 

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