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| Registros recuperados: 80 | |
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| GAMBOA-GAITÁN,MIGUEL ÁNGEL. |
| Fungi are common inhabitants of plants and plant-derived products. Some of these fungal species are potentially dangerous to human health since they are able to produce chemical substances that alter normal physiological activity. There are no studies about natural mycoflora associated with coffee beans in Colombia, and nothing is known about the presence and abundance of toxigenic fungal species in Colombian coffee. In this study 5,000 coffee beans were studied by plating them on potato-based artificial culture medium and it was shown that potentially toxigenic fungal taxa (mostly from genera Aspergillus, Fusarium, Penicillium), are currently found in Colombian coffee beans. This is true for all steps of coffee processing, from berries in trees to toasted... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Commodities; Food microbiology; Coffee; Mycotoxins. |
| Ano: 2012 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2012000100003 |
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| Di Domenico, Adriana Sbardelotto; Busso, Cleverson; Hashimoto, Elisabete Hiromi; Frata, Marcela Tostes; Christ, Divair; Coelho, Sílvia Renata Machado. |
| The aim of this study was to assess alternatives for viable corn storage for small rural properties in two annual storage experiments. A 4×5 factorial design was used with four types of storage (conventional bags, hermetic bags, metal silos and corncobs) and five periods of storage (0, 3, 6, 9 and 12 months). We used corn hybrids 2B688RR and 30K73Hx cultivated in winter 2012 and summer 2012/2013 in the city of Dois Vizinhos, Paraná, Brazil. The moisture contents, counts of Aspergillus sp. and Fusarium sp., and the occurrence of aflatoxins (B1, B2, G1 and G2) were assessed. The kernels stored in hermetic bags had lower moisture contents. Aspergillus sp. and Fusarium sp. were observed in 20.37 and 86.11% of winter storage samples, respectively, and in 83.3... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.03.03.02-3; 5.07.01.03-7 Armazenamento de Produtos Agrícolas/Microbiologia de Alimentos Zea mays L.; Fungi; Mycotoxins; Grain storage; Food safety Armazenamento de Produtos Agrícolas/Microbilogia Aplicada. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/25621 |
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| Huerta-Treviño,Alejandra; Dávila-Aviña,Jorge E.; Sánchez,Eduardo; Heredia,Norma; García,Santos. |
| Abstract Mycotoxins are secondary metabolites produced by specific filamentous fungi that are common contaminants of agricultural commodities. These compounds are toxic to humans and animals, and they are a health problem worldwide. Mycotoxin-containing feeds can cause serious diseases in farm animals and substantial economic losses. Therefore, the objective of this study was to determine the occurrence and levels of six mycotoxins in three types of forage at retail in the state of Nuevo León, México. The hypothesis was that all types of forages were contaminated with at least one of the six mycotoxins analyzed. One hundred and twenty samples of alfalfa (Medicago sativa L.), sorghum [Sorghum bicolor (L.) Moench], and grass (Cenchrus ciliaris L.) used for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycotoxins; Forages; Aflatoxin; Fumonisin; Ochratoxin. |
| Ano: 2016 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952016000700825 |
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| MÜLLER,LUCIELI K.F.; PAIANO,DIOVANI; BOTTARI,NATHIELI B.; SANTURIO,JANIO M.; ZAMPAR,ALINE; SCHETINGER,MARIA R.C.; ZANETTE,RÉGIS A.; MENDES,RICARDO E.; GLORIA,EDUARDO M.; BALDISSERA,MATHEUS D.; SILVA,ALEKSANDRO S. DA. |
| Abstract This study was aimed to analyze the effects of spray-dried porcine plasma (SDPP) on the health of post weaning piglets challenged with diets contaminated with aflatoxins and fumonisins. Fifty-six male piglets (7.15 ± 0.61 kg) were allocated in four groups: CTL group received a regular diet; SDPP group received a regular diet and 6% SDPP; MYC group received a diet containing 300 µg/kg aflatoxins and 8,000 µg/kg fumonisins; group MYC+SDPP received 300 µg/kg aflatoxins, 8,000 µg/kg fumonisins and 6% SDPP. The animals that received the experimental diet containing mycotoxins (MYC group) had lower weight gain at the end of the experiment compared to the other treatments. Animals receiving SDPP showed decreased urea levels throughout the experiment... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Functional foods; Intoxication; Mycotoxins; Pigs; Health. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000603115 |
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| Keller,K.M.; Deveza,M.V.; Koshiyama,A.S.; Tassinari,W.S.; Barth,O.M.; Castro,R.N.; Lorenzon,M.C.. |
| The Brazilian Sac Brood is a disease that affects apiaries of Africanized bee hives in Brazil, thereby making them susceptible to high losses. This study investigated the pathogenicity of Africanized bee hives by the entomopathogenic fungi in a Brazilian Sac Brood endemic region. The degree of fungal contamination, presence of mycotoxins in beehive elements, and vulnerability of healthy beehives in environments subjected and not subjected to the disease were investigated. From the contaminating fungal load, species that are mycotoxin producers and pathogenic causing mortality in the bees have been isolated. The analysis of bee pollen and bee bread samples did not show the presence of the toxic pollen of Stryphnodendron (Fabaceae), which has been indicated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bee health; Beekeeping; Molds; Mycotoxins. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000501471 |
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| Jovaišienė,J.; Bakutis,B.; Baliukonienė,V.; Matusevičius,P.; Lipiński,K.; Antoszkiewicz,Z.; Fijałkowska,M.. |
| ABSTRACT The aim of the current study was to investigate biogenic amines and mycotoxins concentrations in baled silage (mainly Poaceae family grasses) prepared in organic and conventional farms and to relate these parameters to fermentative parameters. The mean dry matter (DM) content was 364.10±93.31 and 424.70±95.93g/kg in the silage from organic and conventional farms respectively. The silage samples from organic farms had 17.00% higher (P≤ 0.05) tyramine (TY) than the silage from conventional farms. Conventional farm samples were characterized by 46.00% higher histamine (HIS) (P≤ 0.05), 9.80% higher putrescine (PUT) (P≤ 0.05), 17.30% higher cadaverine (CAD) (P≤ 0.05). Aflatoxins (AFL) (total) and zearalenone (ZEN), T-2/HT-2 concentrations were higher... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biogenic amines; Mycotoxins; Volatile fatty acids; Organic farm; Conventional farm. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000200269 |
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| Dinolfo,María I; Stenglein,Sebastián A. |
| Fusarium head blight is an important disease affecting cereal grains. Fusarium graminearum is the major causal agent of this disease around the world, but some researchers have documented the increased importance of F. poae. Moreover, F. poae presence may be accompanied of its mycotoxins production, being able to produce trichothecenes of type A diacetoxyscirpenol, monoacetoxyscirpenol, scirpentriol, HT-2 toxin, T-2 toxin and neosolaniol, as well as the type B nivalenol and fusarenone-X. Outside the trichotecenes group, F. poae has been reported to produce enniatins, beauvericin and moniliformin. Due to F. poae may be present in cereal grains used for food and processed products, the aims of this review is to recognize the importance of the hazard effects... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fusarium poae; Methods; Mycotoxins; Effects. |
| Ano: 2014 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722014000100001 |
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| Oliveira,Tatiana Roselena de; Jaccoud-Filho,David de Souza; Henneberg,Luciana; Michel,Milton Domingos; Demiate,Ivo Mottin; Pinto,Alessandra Teixeira Barbosa; Machinski Junior,Miguel; Barana,Ana Cláudia. |
| This work had as objectives the study of the physical and mechanical characteristics of maize kernels in relation to the contamination by Fusarium sp and by zearalenone in twenty landraces of maize from the southern region of Brazil. From the analyzed samples, 60 % has been considered to have a hard endosperm type and 40 % an intermediary one. A correlation between the physical and mechanical variables was observed as an indication that the higher is the proportion of hard endosperm, more dense will be the kernel and more force for its rupture will be necessary. The level of contamination by Fusarium sp was between 5.5 and 24.75% among the analyzed grains, correlating positively with the flotation index, indicating that the landraces of maize with a softer... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fungi; Texture of endosperm; Corn landraces; Mycotoxins. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700002 |
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| 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 |
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| 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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| Mallmann,Adriano Olnei; Marchioro,Alexandro; Oliveira,Maurício Schneider; Rauber,Ricardo Hummes; Dilkin,Paulo; Mallmann,Carlos Augusto. |
| Variance and performance of two sampling plans for aflatoxins quantification in maize were evaluated. Eight lots of maize were sampled using two plans: manual, using sampling spear for kernels; and automatic, using a continuous flow to collect milled maize. Total variance and sampling, preparation, and analysis variance were determined and compared between plans through multifactor analysis of variance. Four theoretical distribution models were used to compare aflatoxins quantification distributions in eight maize lots. The acceptance and rejection probabilities for a lot under certain aflatoxin concentration were determined using variance and the information on the selected distribution model to build the operational characteristic curves (OC). Sampling... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycotoxins; Variance; Error; Characteristic operation curve; Zea mays. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100006 |
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| Guimarães,Lucas Costa; Fernandes,Ana Paula; Chalfoun,Sara Maria; Batista,Luís Roberto. |
| Microorganisms are a source of many high-value compounds which are useful to every living being, such as humans, plants and animals. Since the process of isolating and improving a microorganism can be lengthy and expensive, preserving the obtained characteristic is of paramount importance, so the process does not need to be repeated. Fungi are eukaryotic, achlorophyllous, heterotrophic organisms, usually filamentous, absorb their food, can be either macro or microscopic, propagate themselves by means of spores and store glycogen as a source of storage. Fungi, while infesting food, may produce toxic substances such as mycotoxins. The great genetic diversity of the Kingdom Fungi renders the preservation of fungal cultures for many years relevant. Several... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycotoxins; Toxigenic fungi; Methods for fungal conservation. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100007 |
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| Rodríguez-Amaya,Delia B.; Sabino,Myrna. |
| The number of research papers (128 papers) on mycotoxins published by Brazilian researchers in 1991-2000 surpassed the total number (85 papers) published in the preceding three decades (1961-1990). Thirty percent of the papers surveyed mycotoxins in foods and feeds. AFs in peanut and peanut products continued to be alarming, and high incidence and levels of FBs in corn and corn products also appeared as a serious problem. Contamination with other toxins, such as ZEA, OTA and trichothecenes, was low. Occurrence of AFM1 in milk and dairy products and patulin in apple juice needs to be verified as the results are somewhat diverging. Work on analytical methods, mycological examination and toxic effects constituted 16, 13 and 13%, respectively, of the published... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycotoxins; Occurrence; Influencing factors; Research; Brazil. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000100001 |
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| Pereira,Angela Maria; Kemmelmeier,Carlos. |
| The original isolate of the galactose oxidase producing fungus Dactylium dendroides, and other five galactose oxidase producing Fusarium isolates were cultivated in different media and conditions, in order to evaluate the production of 11 mycotoxins, which are characteristic of the genus Fusarium: moniliformin, fusaric acid, deoxynivalenol, fusarenone-X, nivalenol, 3-acetyldeoxynivalenol, neosolaniol, zearalenol, zearalenone, acetyl T-2, and iso T-2. The toxicity of the culture extracts to Artemia salina larvae was tested. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Galactose oxidase; Fusarium; Dactylium dendroides; Mycotoxins. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000200013 |
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| 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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| 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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| Registros recuperados: 80 | |
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