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Registros recuperados: 19 | |
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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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TERRA, M. F.; PRADO, G.; PEREIRA, G. E.; EMATNÉ, H. J.; BATISTA, L. R.. |
Ochratoxin A (OTA) is the main mycotoxin found in grapes, wines and grape juices and is considered one of the most harmful contaminants to human health. In this study, samples of tropical wines and grape juices from different grape varieties grown in Brazil were analysed for their OTA content by high-performance liquid chromatography. The detection and quantification limits for OTA were 0.01 and 0.03 μg L−1 respectively. OTA was detected in 13 (38.24%) of the samples analysed, with concentrations ranging from <0.03 to 0.62 μg L−1. OTA was not detected in any of the grape juice samples. Most of the red wine samples proved to be contaminated with OTA (75%), while only one white wine sample was contaminated. However,... |
Tipo: Separatas |
Palavras-chave: Suco de uva; Vinho tropical; Vitivinicultura.; Uva; Vitis Vinifera.; Grapes. |
Ano: 2012 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/944421 |
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TERRA, M. F.; PRADO, G.; PEREIRA, G. E.; EMATNÉ, H. J.; BATISTA, L. R.. |
Ochratoxin A (OTA) is the main mycotoxin found in grapes, wines and grape juices and is considered one of the most harmful contaminants to human health. In this study, samples of tropical wines and grape juices from different grape varieties grown in Brazil were analysed for their OTA content by high-performance liquid chromatography. The detection and quantification limits for OTA were 0.01 and 0.03 ?g L?1 respectively. OTA was detected in 13 (38.24%) of the samples analysed, with concentrations ranging from <0.03 to 0.62 micron g L-1. OTA was not detected in any of the grape juice samples. Most of the red wine samples proved to be contaminated with OTA (75%), while only one white wine sample was contaminated. However, the OTA levels detected in all... |
Tipo: Artigo de periódico |
Palavras-chave: Vinho tropical; Detecção.; Uva; Viticultura; Vinho; Suco; Ocratoxina.. |
Ano: 2012 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/944694 |
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SILVA, L. D.; PEREIRA, G. E.; BATISTA, L. R.; MATTEOLI, F. P.. |
Grapevine cultivars are distributed worldwide, nevertheless the fermentation of its grape berries renders distinct wine products that are highly associated to the local fungal community. Despite the symbiotic association between wine and the fungal metabolism, impacting both the terroir and mycotoxin production, few studies have explored the vineyard ecosystem fungal community using both molecular marker sequencing and mycotoxin production assessment. In this study, we investigated the fungal community of three grapevine cultivars (Vitis vinifera L.) in two tropical vineyards. Illumina MiSeq sequencing was performed on two biocompartments: grape berries (GB) and grapevine soil (GS); yielding a total of 578,495 fungal internal transcribed spacer 1 reads,... |
Tipo: Artigo de periódico |
Palavras-chave: Fungal ecology; Next-generation sequencing; Terroir; Tropical vineyard; Wine. |
Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1132295 |
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VARGAS, E. A.; SILVA, F. B.; SANTOS, E. A.; SOUZA, S. M.; SOUZA, S. E.; CORRÊA, T. B. S.; FRANÇA, R. C. A.; AMORIM, S. S.; PFENNING, L. H.; BATISTA, L. R.; PEREIRA, R. T. G.; NOGUEIRA, M. D.; NACIF, A. P.; AFONSO JUNIOR, P. C.. |
762 coffee samples (1 kg) ? most of dried processed arabica coffee from several stages of pre and post harvest ? were collected from different regions of Brazil according to a sample history questionnaire. Among them 60 samples (16 kg) were classified and sorted by defects, according to Brazilian Classification, in 13-17 types of defects: black, sour, insect damage beans, malformed, shell, immature, bean with fox silver skin, pulp nipped bean, broken, parchment, sticks, among others. All 762 samples and fractions of defects (446 subsamples) in the coffee samples were analysed for OTA and the influence and impact of coffee processing and the presence of defects in the OTA contamination were determined. |
Tipo: Anais e Proceedings de eventos |
Palavras-chave: Coffee.. |
Ano: 2005 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/885805 |
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FREIRE, L.; PASSAMANI, F. R. F.; THOMAS, A. B.; NASSUR, R. de C. M. R.; SILVA, L. M.; PASCHOAL, F. N.; PEREIRA, G. E.; PRADO, G.; BATISTA, L. R.. |
The incidence of filamentous fungi and toxin levels in grapes and wines varies depending on the variety of grapes, the wine region, agricultural practices, weather conditions, the harvest and the winemaking process. In this sense, the objective of this study was to evaluate the diversity of Aspergillus and Penicillium fungi isolated fromwine grapes of the semi-arid tropical region of Brazil, evaluate the presence of ochratoxin A (OTA) in the experimental wine and verify if there is a correlation between occurrence of these fungi and the physicochemical characteristics of the wine grapes grown in the region. For the isolation of fungi we used the direct plating technique. The presence of OTA in the experimental wine was detected by high-performance liquid... |
Tipo: Artigo de periódico |
Palavras-chave: Fungo filamentoso; Fungo isolado; Uva; Doenca de planta; Vinho; Fungo. |
Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1059865 |
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VARGAS, E. A.; SILVA, F. B.; SANTOS, E. A.; SOUZA, S. M. C.; SOUZA, S. E.; CORRÊA, T. B. S.; FRANÇA, R. C. A.; AMORIM, S. S.; PFENNING, L. H.; BATISTA, L. R.; PEREIRA, R. T. G.; NOGUEIRA, M. D.; NACIF, A. P.; CESAR JUNIOR, P.. |
762 amostras de café (1kg) ? em sua maioria café arábica processado (beneficiado) oriundos de diferentes estágios da pré e pós colheita ? foram coletados em diferentes regiões do Brasil de acordo com um questionário sobre o histórico da amostra. 60 amostras, entre as 762, foram classificadas e separadas por defeitos, de acordo com a Classificação Brasileira, em 1317 tipos de defeitos: preto, ardido, brocado, brocado azulado, malformado, concha e miolo de concha, verde, melado, dentre outros. Todas as 762 amostras e as frações de defeitos (446 subamostras) foram analisadas para ocratoxina A e a influência e o impacto do processamento do café e a presença de defeitos na contaminação de ocratoxina A foram determinados. |
Tipo: Anais e Proceedings de eventos |
Palavras-chave: Defeito; Ocratoxina A.; Café; Colheita.. |
Ano: 2005 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/909607 |
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SILVA, D. M. da; BATISTA, L. R.; PEREIRA, G. E.. |
A colonização dos Aspergillusda Seção Nigri nas uvas durante o cultivo é a principal fonte de ocratoxina A (OTA) em uvas e seus derivados. Este estudo teve como objetivo avaliar a presença de espécies de Aspergillus Seção Nigri produtores de ocratoxina A em três variedades de uvas tintas utilizadas para a elaboração de vinho tinto e suco de uva, coletadas na região vitivinícola do Vale Submédio São Francisco em parceria com o setor de Enologia da Embrapa Semi-Árido localizada em Petrolina (PE). Dentre as variedades de uvas analisadas, Petit verdot apresentou maior nível de contaminação por Aspergillus Seção Nigri. A produção de ocratoxina A foi confirmada nas espécies Aspergillus carbonarius e Aspergillus niger. Palavras-chaves: Uvas Tintas, Aspergillus,... |
Tipo: Separatas |
Palavras-chave: Ocratoxina A; Seção Nigri; Viticultura; Uva; Fungo; Contaminação; Micotoxina; Aspergillus. |
Ano: 2010 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/877920 |
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Registros recuperados: 19 | |
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