TY - JOUR
T1 - Aspergillus section Flavi diversity and the role of A. novoparasiticus in aflatoxin contamination in the sugarcane production chain
AU - Iamanaka, Beatriz Thie
AU - de Souza Lopes, Aline
AU - Martins, Ligia Manoel
AU - Frisvad, Jens Christian
AU - Medina, Angel
AU - Magan, Naresh
AU - Sartori, Daniele
AU - Massi, Fernanda Pelisson
AU - Fungaro, Maria Helena Pelegrinelli
AU - Taniwaki, Marta Hiromi
PY - 2019
Y1 - 2019
N2 - 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 São 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 arachidicola 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 μg/kg and maximum value of 10.19 μg/kg. This is the first report of contamination of sugarcane by A. novoparasiticus.
AB - 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 São 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 arachidicola 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 μg/kg and maximum value of 10.19 μg/kg. This is the first report of contamination of sugarcane by A. novoparasiticus.
KW - Sugarcane
KW - Dried yeast
KW - Aspergillus
KW - Aflatoxins
U2 - 10.1016/j.ijfoodmicro.2018.12.024
DO - 10.1016/j.ijfoodmicro.2018.12.024
M3 - Journal article
C2 - 30634067
SN - 0168-1605
VL - 293
SP - 17
EP - 23
JO - International Journal of Food Microbiology
JF - International Journal of Food Microbiology
ER -