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Master's Dissertation
DOI
https://doi.org/10.11606/D.42.2009.tde-27012010-122426
Document
Author
Full name
Danielle Diniz Atayde
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2009
Supervisor
Committee
Correa, Benedito (President)
Ferreira Júnior, José Ribamar dos Santos
Godoy, Ignácio José de
Title in Portuguese
Microbiota fúngica e determinação de aflatoxinas em cultivar de amendoim plantado em diferentes regiões produtoras no estado de São Paulo.
Keywords in Portuguese
Aspergillus flavus
Aflatoxinas
Amendoim
Micotoxinas
Solos
Abstract in Portuguese
Os objetivos foram: identificar a microbiota fúngica e a ocorrência de aflatoxinas em cultivar de amendoim, identificar a microbiota fúngica do solo e correlacionar os resultados obtidos com os níveis de atividade de água encontrados. As amostras (solo e amendoim) foram provenientes de: Jaboticabal, Rosália, Tupã e Cafelândia (SP). A microbiota fúngica do solo revelou que o fungo do gênero Penicillium foi o mais frequente (52,1 %) nas quatro regiões durante as duas coletas (após a emergência das plantas e duas semanas antes do arranquio). Dentro do gênero Aspergillus, A. flavus foi a espécie mais frequente (13,5 %). A microbiota fúngica dos grãos e das cascas, das quatro regiões, nas duas coletas (duas semanas antes do arranquio e após o arranquio), demonstrou maior frequência de isolamento do fungo do gênero Fusarium (70,2 %). Do gênero Aspergillus, a espécie A. flavus foi a mais frequente (9,8 %). A análise de aflatoxinas revelou a presença de aflatoxinas em 5 % das amostras de grãos analisadas. Nas cascas, 13,75 % das amostras apresentaram contaminação por aflatoxinas.
Title in English
Mycoflora and determination of aflatoxins in peanut variety grown in differents producing regions in the state of São Paulo.
Keywords in English
Aspergillus flavus
Aflatoxins
Mycotoxins
Peanut
Soil
Abstract in English
The objectives were: to identify the mycoflora and the occurrence of aflatoxins in a peanut variety, identify the soil mycoflora and compare the acquired results with the levels of water activity found. The samples (peanut and soil) were collected from: Jaboticabal, Rosália, Tupã and Cafelândia (SP/Brazil). The mycoflora of the soil revealed that the genus Penicillium was the most frequent (52.1 %) in the four regions during the two trials (after the emergence of the plants and two weeks before the uprooting). Within the genus Aspergillus, A. flavus was the most frequent specie (13.5 %). The mycoflora of the kernels and peanut hulls, from the four regions in the two trials (two weeks before the uprooting and after the uprooting), demonstrated greater frequency of isolation of the genus Fusarium (70.2 %). Within the genus Aspergillus, A. flavus was the most frequent specie (9.8 %). The analysis of aflatoxins revealed the presence of aflatoxins in 5 % of the kernels samples analyzed. In peanut hulls, 13.75 % of the samples presented aflatoxin contamination.
 
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Publishing Date
2010-02-26
 
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