Occurrence of patulin in grape (Vitis vinifera L. cv. 'Rubi') with indication of the sour rout

Sour rout is a pathology of bunch grapes occurring in hot and rainy periods. Several fungi and bacteria are associated with this disease, including Penicilium spp. fit the present study it was carried out an investigation to determine the incidence of sour rout and patulin in grapes (Vitis vinifera L. cv 'Rubi') cultivated in Marialva, Brazil. The treatments studied were the following: (1) samples without symptoms of sour rout, (II) samples with symptoms and without cleaning stage, (III) samples with symptoms and with cleaning stage and (IV) samples with symptoms, cleaning stage and washing with hypochlorite. The thin-layer chromatography was utilized to determine the presence and quantification of patulin. Patulin was not detected in any samples.