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| Registros recuperados: 103 | |
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| Kobashigawa,Estela; Corassin,Carlos Humberto; Franco,Larissa Tuanny; Uliana,Rômulo Dutra; Oliveira,Carlos Augusto Fernandes de. |
| ABSTRACT: The aim of the present study was to assess the occurrence of aflatoxins (AFs) and fumonisins (FBs) in feed ingredients (corn and soybean meal) and finishing feed in a broiler operation system, as well was to evaluate their effect on the productivity of 20 batches of broilers produced and the histology status of broilers’ liver after slaughter. Corn samples presented the highest frequencies of AFs and FBs, at mean levels of 29.1 and 2,100µg/kg, respectively. Soybean samples presented mean levels of 1.5 and 70µg/kg for AFs and FBs, respectively. Batches of broilers receiving feed containing FB levels higher than 1,000µg/kg had lower weight gain and higher mortality rates, while those fed rations with AFs equal or above the limit of quantification... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycotoxins; AFB1; FB1; Broiler chickens; Productivity. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000200652 |
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| Sekiyama,Beatriz Leiko; Ribeiro,Alessandra Braga; Machinski,Paulo André; Machinski Junior,Miguel. |
| The occurrence of aflatoxins B1 (AFB1), B2 (AFB2 ), G1 (AFG1 ) and G2 (AFG2 ), ochratoxin A (OA) and zearalenone (ZEA) was evaluated in 121 maize-based food samples collected in the commerce of Maringá City, Paraná State, Brazil. The study was carried out between January 2002 and February 2003. Thin-layer chromatographic method was used to determine the mycotoxins. The recovery averages were 106.6%, 109.4%, 106.6%, 109.4%, 101.8% and 101.7% to AFB1, AFB2, AFG1, AFG2, OA and ZEA, respectively. Three samples (2.5%) were positive to AFB1 (8 to 59 µg/kg), two (1.7%) to AFB2 (2.4 µg/kg), one (0.8%) to OA (64 µg/kg) and one (0.8%) to ZEA (448 µg/kg). The greater frequency of positive samples and also the highest concentration of AFB1 were found in popcorn... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycotoxins; Risk; Brazilian products derived from maize. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000300016 |
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| LANZA, F. E.; ZAMBOLIM, L.; COSTA, R. V. da; SILVA, D. D. da; QUEIROZ, V. A. V.; PARREIRA, D. F.; MENDES, S. M.; SOUZA, A. G. C.; COTA, L. V.. |
| O objetivo deste trabalho foi avaliar a eficiência da aplicação foliar de fungicidas na redução da incidência de patógenos fúngicos, de grãos ardidos e de fumonisinas totais em grãos de milho (Zea mays). Foram conduzidos três ensaios: um no município de Luís Eduardo Magalhães, na Bahia, e dois em Sete Lagoas, em Minas Gerais, nas safras 2010/2011 e 2011/2012, com cultivo de diferentes híbridos comerciais. Os seguintes fungicidas foram aplicados zero, uma e duas vezes: picoxistrobina + ciproconazol, piraclostrobina + epoxiconazole, trifloxistrobina + tebuconazole, azoxistrobina + ciproconazol e tiofanato metílico. Em todos os ensaios, foram realizados a quantificação da incidência de grãos ardidos, o teste de patologia de sementes e a quantificação dos... |
| Tipo: Artigo de periódico |
Palavras-chave: Patógeno fúngico.; Controle químico; Doença fúngica; Fusarium; Fungo; Micotoxina; Zea Mays.; Chemical control; Mycotoxins; Plant pathogenic fungi.. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1052548 |
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| SANTOS, J. S.; PEDROLLO, D. G.; MALLMANN, C. A.; BASSOI, M. C.; PIRES, J. L.; SÓ e SILVA, M.; CAIERAO, E.; MIRANDA, M. Z.; ONO, E. Y. S.; ITANO, E. N.; KAWAMURA, O.; HIROOKA, E. Y.. |
| Tipo: Separatas |
Palavras-chave: Fusariose; Micotoxina; Cromatografia; Trigo; Wheat; Mycotoxins; Liquid chromatography. |
| Ano: 2009 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/579096 |
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| SOUZA, J. M. L. de; CARTAXO, C. B. da C.; LEITE, F. M. N.; REIS, F. S.. |
| Nativa da Região Amazônica, a castanheira (Bertholletia excelsa H.B.K.) é considerada uma das maiores riquezas nos estados que formam a Amazônia Brasileira. Um dos grandes problemas na conservação da castanha-do-brasil deve-se ao crescimento de fungos produtores de aflatoxinas e bactérias patogênicas, por causa das condições de umidade relativa e temperatura elevadas a que é submetida desde o momento da queda do ouriço. Assim, buscou-se identificar, em indústrias de processamento de castanha-do-brasil no Acre, os microrganismos responsáveis pela qualidade sanitária, especialmente os do grupo coliformes, bactérias mesáfilas, bolores e leveduras. Foram coletadas amostras nos meses de agosto de 2001 a maio de 2002, em cinco etapas do processamento. As... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Castanha do brasil; Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Nuez del Brasil; Calidad de la fruta; Tecnología de procesamiento.; Aflatoxinas; Micotoxinas; Contaminación microbiana; Castanha do pará; Bertholletia excelsa; Microbiologia; Análise bacteriológica; Fruto; Qualidade; Processamento; Contaminação fúngica; Micotoxina; Aflatoxina; Aspergillus flavus; Brazil nuts; Fruit quality; Microbial contamination; Processing technology; Fungi; Mycotoxins; Aflatoxins.. |
| Ano: 2004 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/501670 |
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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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| MEDEIROS, F. H. V.; MARTINS, S. J.; ZUCCHI, T. D.; MELO, I. S. de; BATISTA, L. R.; MACHADO, J. da C.. |
| Mycotoxins are produced by the secondary metabolism of many fungi and can be found in almost 25% of the world?s agricultural commodities. These compounds are toxic to humans, animals, and plants and therefore, efforts should be made to avoid mycotoxin contamination in food and feed. Besides, up to 25% of all harvested fruits and vegetables are lost due to storage molds and/ or mycotoxin contamination and many methods have been applied to mitigate these issues, but most of them rely on the use of fungicides. Although chemicals are often the first defensive line against mycotoxigenic fungi, the indiscriminate use of fungicides are awakening the public perception due to their noxious effects on the environment and human/animal health. Thus, there is an... |
| Tipo: Separatas |
Palavras-chave: Biocontrol; Microbial antagonists; Postharvest decay; Agentes de biocontrole; Microrganismos antagonistas; Perda em pós-colheita; Micotoxina; Fungo; Controle biológico; Segurança alimentar; Mycotoxins; Biological control; Food safety. |
| Ano: 2012 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/942573 |
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| SANTOS, D. G. dos; COELHO, C. C. de S.; FERREIRA, A. B. R.; FREITAS-SILVA, O.. |
| Brazil holds a series of favorable climatic conditions for agricultural production including the hours and intensity of sunlight, the availability of agricultural land and water resources, as well as diverse climates, soils and biomes. Amidst such diversity, Brazilian coffee producers have obtained various standards of qualities and aromas, between the arabica and robusta species, which each present a wide variety of lineages. However, temperatures in coffee producing municipalities in Brazil have increased by about 0.25 C per decade and annual precipitation has decreased. Therefore, the agricultural sector may face serious challenges in the upcoming decades due to crop sensitivity to water shortages and thermal stress. Furthermore, higher temperatures may... |
| Tipo: Artigo de periódico |
Palavras-chave: Aquecimento global; Tecnologia de Alimento; Produto de Origem Vegetal; Café; Clima; Micotoxina; Food technology; Coffee products; Climate; Global warming; Mycotoxins. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1131362 |
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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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| 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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| Registros recuperados: 103 | |
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