AI Article Synopsis
- Recent findings revealed that Aspergillus niger produces Fumonisin B(2) (FB(2)), which contaminates grape-derived products like raisins, must, and wine.
- A study assessed 681 black aspergilli strains from Portuguese wine grapes, finding FB(2) in 29% of A. niger strains, with production levels ranging from 0.003 to 6.0 mg/kg.
- The Douro region had the highest occurrence of fumonisinogenic strains (38%), while the Alentejo region had the lowest (10%), with only 10 strains producing both FB(2) and ochratoxin A simultaneously.
Article Abstract
Fumonisin B(2) (FB(2)) was recently found to be produced by Aspergillus niger . When grape-derived products were subsequently analyzed, FB(2) contamination was found in raisins, must, and wine. This study evaluated 681 strains of black aspergilli species isolated from Portuguese wine grapes for FB(2) production when grown on Czapek yeast agar. FB(2) was not detected in Aspergillus carbonarius (n = 75) or Aspergillus ibericus (n = 9) strains, but it was detected in 176 (29%) of the strains belonging to A. niger aggregate (n = 597). The amount of FB(2) produced by these strains ranged from 0.003 to 6.0 mg/kg with a mean of 0.66 mg/kg. The Alentejo region had the lowest percentage (10%) of fumonisinogenic strains, whereas the Douro region had the highest percentage of fumonisinogenic strains (38%). Only 10 strains were found to produce FB(2) and ochratoxin A simultaneously.
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