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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Aspergillus section Flavi and aflatoxins in Brazilian cassava (Manihot esculenta Crantz) and products

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Author(s):
Ono, L. T. [1] ; Silva, J. J. [1] ; Dona, S. [2] ; Martins, L. M. [1] ; Iamanaka, B. T. [1] ; Fungaro, M. H. P. [3] ; Pitt, J. I. [4] ; Taniwaki, M. H. [1]
Total Authors: 8
Affiliation:
[1] Inst Food Technol ITAL, Campinas, SP - Brazil
[2] Paulista Agribusiness Technol Agcy APTA, Technol Dev Ctr Agribusinesses Medio Paranapanema, Assis, SP - Brazil
[3] Univ Estadual Londrina, Londrina, PR - Brazil
[4] Microbial Screening Technol, Smithfield, NSW - Australia
Total Affiliations: 4
Document type: Journal article
Source: MYCOTOXIN RESEARCH; v. 37, n. 3, p. 221-228, AUG 2021.
Web of Science Citations: 0
Abstract

Aflatoxins are carcinogenic compounds produced by some species of Aspergillus, especially those belonging to Aspergillus section Flavi. Their occurrence in food may start in the field, in the post-harvest, or during storage due to inadequate handling and storage. Because cassava is a staple food for a high percentage of the Brazilian population, we evaluated the presence of aflatoxin-producing species in cassava tubers, cassava products (cassava flour, cassava starch, sour starch, and tapioca flour), and in soil samples collected from cassava fields. In addition, the levels of aflatoxin contamination in cassava products were quantified. A total of 101 samples were analyzed, and 45 strains of Aspergillus section Flavi were isolated. Among the identified species, Aspergillus flavus, Aspergillus arachidicola, Aspergillus novoparasiticus, and Aspergillus parasiticus were found. The majority of strains (73.3%) tested for their aflatoxin-producing ability in synthetic media was positive. Despite that, cassava and cassava products were essentially free of aflatoxins, and only one sample of cassava flour contained traces of AFB(1) (0.35 mu g/kg). (AU)

FAPESP's process: 18/25552-0 - Prospecting the genetic diversity of Aspergillus section Flavi isolated in Brazil
Grantee:Beatriz Thie Iamanaka
Support Opportunities: Regular Research Grants
FAPESP's process: 18/25597-3 - Prospecting the genetic diversity of Aspergillus section Flavi isolated in Brazil
Grantee:Josué José da Silva
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 13/05414-8 - Isolation, identification and development of molecular marks for evaluation of Aspergillus niger producers of fumonisin B2 and ochratoxin A
Grantee:Beatriz Thie Iamanaka
Support Opportunities: Regular Research Grants