Abstract
Studies were conducted between 2001 and 2003 to evaluate the incidence of ochratoxigenic strains in Portuguese wine-grapes. At that time, the main responsible for ochratoxin A production in grapes were found to be Aspergillus carbonarius with a production mean of 1.13 mg/kg and some strains from the Aspergillus niger aggregate with a production mean of 0.14 mg/kg. At that time also, all the black aspergilli isolates were preserved in glycerol and stored at -80 ºC. Since recently A. niger was reported as a producer of the mycotoxin fumonisin B2, its levels produced by black aspergilli isolates from the Portuguese grapes were investigated. Approximately 29% of A. niger aggregate strains were found to produce it between 0.003–6.0 mg/kg with a mean of 0.66 mg/kg and only 6% produced more than 1 mg/kg. The incidence and distribution of fumonisinogenic strains among five Portuguese wine-regions is also presented and correlated with data of the ochratoxigenic ones.
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Claims 3
Claim · model-written summary
Aspergillus carbonarius produced ochratoxin A in grapes at a mean of 1.13 mg/kg.
- Taxon
- grapese0
- Interactor
- Aspergillus carbonariusAspergillus carbonariuse0pathogen
- Outcome
- ochratoxin A production in grapese0
- Value
- 1.13 mg/kge0
Verbatim
e0“the main responsible for ochratoxin A production in grapes were found to be Aspergillus carbonarius with a production mean of 1.13 mg/kg”
Claim · model-written summary
Aspergillus niger aggregate strains produced ochratoxin A at a mean of 0.14 mg/kg.
- Taxon
- grapese0
- Interactor
- Aspergillus niger aggregate
Aspergillus nigere0pathogen - Outcome
- ochratoxin A production in grapese0
- Value
- 0.14 mg/kge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ochratoxin A production in grapes were found to be Aspergillus carbonarius with a production mean of 1.13 mg/kg and some strains from the Aspergillus niger aggregate with a production mean of 0.14 mg/kg”
Claim · model-written summary
Approximately 29% of A. niger aggregate strains from grapes produced fumonisin B2.
- Interactor
- A. niger aggregateAspergillus nigere0pathogen
- Outcome
- A. niger aggregate strains were found to produce ite0
- Value
- 29%e0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Approximately 29% of A. niger aggregate strains were found to produce it between 0.003–6.0 mg/kg with a mean of 0.66 mg/kg”
t0“Portuguese wine regions”