Aspergillus section Flavi diversity and the role of A. novoparasiticus in aflatoxin contamination in the sugarcane production chain

Autor(es)

Iamanaka, Beatriz Thie ^[1] ; Lopes, Aline de Souza ^[2] ; Martins, Ligia Manoel ^{[2, 1]} ; Frisvad, Jens Christian ^[3] ; Medina, Angel ^[4] ; Magan, Naresh ^[4] ; Sartori, Daniele ^[5] ; Massi, Fernanda Pelisson ^[5] ; Pelegrinelli Fungaro, Maria Helena ^[5] ; Taniwaki, Marta Hiromi ^[1]

Afiliação do(s) autor(es)

^[1] ITAL, Food Technol Inst, Microbiol Lab, Campinas, SP - Brazil

^[2] Univ Estadual Campinas, UNICAMP, Fac Food Engn, Campinas, SP - Brazil

^[3] Tech Univ Denmark, Dept Syst Biol, Lyngby - Denmark

^[4] Cranfield Univ, Appl Mycol Grp, Cranfield MK43 0AL, Beds - England

^[5] Univ Estadual Londrina, UEL, Londrina, PR - Brazil

• Tipo de documento: Artigo Científico
• Fonte: International Journal of Food Microbiology; v. 293, p. 17-23, MAR 16 2019.
• Citações Web of Science: 1

Resumo

The presence of Aspergillus section Flavi and aflatoxins in sugarcane as well as in by-products, such as molasses, sugar, yeast cream and dried yeast, collected from different fields and processing plants in Sao Paulo state, were investigated throughout the sugarcane production chain. A total of 246 samples was collected and analyzed and 226 isolates of Aspergillus section Flavi were isolated. Aspergillus section Flavi strains were found in sugarcane juice, milled sugarcane, stalk, soil and dried yeast samples. Among the isolates of Aspergillus section Flavi submitted to polyphasic identification (n = 57), Aspergillus novoparasiticus and Aspergillus arathidicola were predominantly found. A significant proportion of the isolates (84.5%) were found to have morphological and physiological characteristics of A. novoparasiticus. Most samples, with the exception of sugar, showed some aflatoxin contamination. The highest level was in dried yeast with an average of 2.55 mu g/kg and maximum value of 10.19 mu g/kg. This is the first report of contamination of sugarcane by A. novoparasiticus. (AU)

• Processo FAPESP: 11/10073-0 - Fungos toxigênicos e aflatoxina no processo de obtenção da levedura seca - subproduto da produção de etanol
• Beneficiário: Beatriz Thie Iamanaka
• Modalidade de apoio: Auxílio à Pesquisa - Regular