The ochratoxin incidence was studied in coffee it mixes, it "bóia" and "varrição" dry in three yard types: earth, cement and asphalt. 238 samples were analyzed collected in 11 municipal districts of the south of Minas Gerais state, being 35 "bóia", 97 - it mixes and 106 varrição. Of the analyzed samples, in 40% the ochratoxin A presence it was not detected, in 74 samples, 31%, ochratoxin A presence were detected the in levels that varied from 0,1 to 5,0 µg/Kg of coffee beans. These results demonstrate that in 169 samples (71%) analyzed they would be inside of the limits in study of the European Legislation that regulates the maximum concentration of ochratoxin A in coffee beans toasted. The species of identified Aspergillus as producing of ochratoxin A were Aspergillus ochraceus, A. sclerotiorum and A. sulphureus. The ochratoxin A concentration levels in coffee beans was larger in the fraction varrição and in the fractions bóia and it mixes, droughts in earth yard. The results of this study conclude that the earth yard increases the risk of contamination with ochratoxin A in coffee beans. The fraction varrição due to the exhibition risks the ochratoxin A, it should be reduced through the adoption of good agricultural practices and not to be used for ends of human and animal consumption.
Coffee; ochratoxin A; Aspergillus
