Ochratoxigenic fungi associated with green coffee beans (Coffea arabica L.) in conventional and organic cultivation in Brazil

dc.contributor.authorRezende, Elisângela de Fátima
dc.contributor.authorBorges, Josiane Gonçalves
dc.contributor.authorCirillo, Marcelo Ângelo
dc.contributor.authorPrado, Guilherme
dc.contributor.authorPaiva, Leandro Carlos
dc.contributor.authorBatista, Luís Roberto
dc.date.accessioned2025-08-29T20:14:10Z
dc.date.issued2013-10-09
dc.description.abstractThe genera Aspergillus comprises species that produce mycotoxins such as aflatoxins, ochratoxins and patulin. These are cosmopolitan species, natural contaminants of agricultural products. In coffee grains, the most important Aspergillus species in terms of the risk of presenting mycotoxins belong to the genera Aspergillus Section Circumdati and Section Nigri. The purpose of this study was to assess the occurrence of isolated ochratoxigenic fungi of coffee grains from organic and conventional cultivation from the South of Minas Gerais, Brazil, as well as to evaluate which farming system presents higher contamination risk by ochratoxin A (OTA) produced by fungi. Thirty samples of coffee grains (Coffea arabica L.) were analysed, being 20 of them of conventional coffee grains and 10 of them organic. The microbiological analysis was done with the Direct Plating Technique in a Dichloran Rose Bengal Chloramphenicol Agar (DRBC) media. The identification was done based on the macro and micro morphological characteristics and on the toxigenic potential with the Plug Agar technique. From the 30 samples analysed, 480 filamentous fungi of the genera Aspergillus of the Circumdati and Nigri Sections were isolated. The ochratoxigenic species identified were: Aspergillus auricoumus, A. ochraceus, A. ostianus, A. niger and A. niger Aggregate. The most frequent species which produces ochratoxin A among the isolated ones was A. ochraceus, corresponding to 89.55%. There was no significant difference regarding the presence of ochratoxigenic A. ochreceus between the conventional and organic cultivation systems, which suggests that the contamination risk is similar for both cultivation systems.
dc.identifier.citationREZENDE, E. F. et al. Ochratoxigenic fungi associated with green coffee beans (Coffea arabica L.) in conventional and organic cultivation in Brazil. Brazilian Journal of Microbiology, Lavras, v. 44, n. 2, p. 377–384, oct. 2013.
dc.identifier.issn1678-4405
dc.identifier.urihttps://doi.org/10.1590/S1517-83822013000200006
dc.identifier.uri${dspace.url}/handle/123456789/14819
dc.language.isoen
dc.publisherSociedade Brasileira de Microbiologia
dc.relation.ispartofseriesBrazilian Journal of Microbiology; v. 44, n. 2, 2013.
dc.subjectAspergillus ochraceus
dc.subjectOchratoxin A
dc.subjectArabica coffee
dc.titleOchratoxigenic fungi associated with green coffee beans (Coffea arabica L.) in conventional and organic cultivation in Brazil
dc.typeArtigo

Arquivos

Pacote original

Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
baixados.pdf
Tamanho:
605.35 KB
Formato:
Adobe Portable Document Format

Licença do pacote

Agora exibindo 1 - 1 de 1
Nenhuma Miniatura Disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição: