Abstract
Fungi contaminant of “alpataco” ( Prosopis flexuosa) fruits from “La Pampa province” (Argentina) were identified. Alternaria alternata and Sphaeropsis sapinea were the dominant species. Phoma sp., Nigrospora sp., Preussia minima, Cladosporium sp., Pithomyces chartarum, Epicoccum nigrum, Aspergillus niger and Aspergillus speluneus were also isolated but with less frequency. Twelve strains of Alternaria alternata, the toxigenic species with higher incidence, were screened for alternariol (AOH), alternariol monomethyl ether (AME) and tenuazonic acid (TA) production. Since one isolate was able to produce AME, six isolates produced AOH and AME and two isolates produced AOH, AME and TA, these results indicate a potential risk of contamination with Alternaria toxins in this substrate.
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