[Putative mycotoxin-producing fungi isolated from alpataco (Prosopis flexuosa) fruits].
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.
Canafoglia
Mónica
M
Departamento de Química Orgánica, Area Bromatología, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, Piso 3, Buenos Aires, Argentina.
Comerio
Ricardo
R
Fernández Pinto
Virginia
V
Vaamonde
Graciela
G
D000528:Alternaria / Q000302:isolation & purification / Q000378:metabolism; D001118:Argentina; D005506:Food Contamination; D005516:Food Microbiology; D005638:Fruit / Q000382:microbiology*; D005658:Fungi / Q000302:isolation & purification* / Q000378:metabolism; D007783:Lactones / Q000032:analysis; D003904:Mitosporic Fungi / Q000302:isolation & purification / Q000378:metabolism; D009183:Mycotoxins / Q000032:analysis / Q000096:biosynthesis*; D029862:Prosopis / Q000382:microbiology*; D013045:Species Specificity; D013720:Tenuazonic Acid / Q000032:analysis
D007783:Lactones; D009183:Mycotoxins; D013720:Tenuazonic Acid; C005197:alternariol; C018206:alternariol monomethyl ether