Abstract
The genera Aspergillus comprises species that produce mycotoxins such as aflatoxins, ochratoxins and patulin. These are cosmopolitan species, natural contaminants of agricultural products. In coffee grains, the most important Aspergillus species in terms of the risk of presenting mycotoxins belong to the genera Aspergillus Section Circumdati and Section Nigri. The purpose of this study was to assess the occurrence of isolated ochratoxigenic fungi of coffee grains from organic and conventional cultivation from the South of Minas Gerais, Brazil, as well as to evaluate which farming system presents higher contamination risk by ochratoxin A (OTA) produced by fungi. Thirty samples of coffee grains (Coffea arabica L.) were analysed, being 20 of them of conventional coffee grains and 10 of them organic. The microbiological analysis was done with the Direct Plating Technique in a Dichloran Rose Bengal Chloramphenicol Agar (DRBC) media. The identification was done based on the macro and micro morphological characteristics and on the toxigenic potential with the Plug Agar technique. From the 30 samples analysed, 480 filamentous fungi of the genera Aspergillus of the Circumdati and Nigri Sections were isolated. The ochratoxigenic species identified were: Aspergillus auricoumus, A. ochraceus, A. ostianus, A. niger and A. niger Aggregate. The most frequent species which produces ochratoxin A among the isolated ones was A. ochraceus, corresponding to 89.55%. There was no significant difference regarding the presence of ochratoxigenic A. ochreceus between the conventional and organic cultivation systems, which suggests that the contamination risk is similar for both cultivation systems.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
The 30 coffee-grain samples yielded 480 Aspergillus fungi from Circumdati and Nigri sections.
- Taxon
- Coffea arabica L.
Coffea arabicae0 - Interactor
- Aspergillus
Aspergilluse1pathogen - Outcome
- filamentous fungi of the genera Aspergillus of the Circumdati and Nigri Sections were isolatede1
- Value
- 480e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thirty samples of coffee grains (Coffea arabica L.) were analysed”
e1“From the 30 samples analysed, 480 filamentous fungi of the genera Aspergillus of the Circumdati and Nigri Sections were isolated”
Claim · model-written summary
Aspergillus auricoumus was identified as an ochratoxigenic fungus on coffee grains.
- Taxon
- Coffea arabica L.Coffea arabicat0
- Interactor
- Aspergillus auricoumuse0pathogen
- Outcome
- ochratoxigenic species identifiede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green coffee beans (Coffea arabica L.)”
e0“The ochratoxigenic species identified were: Aspergillus auricoumus, A. ochraceus, A. ostianus, A. niger and A. niger Aggregate”
Claim · model-written summary
A. ochraceus was identified as an ochratoxigenic fungus on coffee grains.
- Taxon
- Coffea arabica L.Coffea arabicat0
- Interactor
- A. ochraceus
Aspergillus ochraceuse0pathogen - Outcome
- ochratoxigenic species identifiede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green coffee beans (Coffea arabica L.)”
e0“The ochratoxigenic species identified were: Aspergillus auricoumus, A. ochraceus, A. ostianus, A. niger and A. niger Aggregate”
Claim · model-written summary
A. ostianus was identified as an ochratoxigenic fungus on coffee grains.
- Taxon
- Coffea arabica L.Coffea arabicat0
- Interactor
- A. ostianus
Aspergillus ostianuse0pathogen - Outcome
- ochratoxigenic species identifiede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green coffee beans (Coffea arabica L.)”
e0“The ochratoxigenic species identified were: Aspergillus auricoumus, A. ochraceus, A. ostianus, A. niger and A. niger Aggregate”
Claim · model-written summary
A. niger was identified as an ochratoxigenic fungus on coffee grains.
- Taxon
- Coffea arabica L.Coffea arabicat0
- Interactor
- A. niger
Aspergillus nigere0pathogen - Outcome
- ochratoxigenic species identifiede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green coffee beans (Coffea arabica L.)”
e0“The ochratoxigenic species identified were: Aspergillus auricoumus, A. ochraceus, A. ostianus, A. niger and A. niger Aggregate”
Claim · model-written summary
A. niger Aggregate was identified as an ochratoxigenic fungus on coffee grains.
- Taxon
- Coffea arabica L.Coffea arabicat0
- Interactor
- A. niger AggregateAspergillus nigere0pathogen
- Outcome
- ochratoxigenic species identifiede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green coffee beans (Coffea arabica L.)”
e0“The ochratoxigenic species identified were: Aspergillus auricoumus, A. ochraceus, A. ostianus, A. niger and A. niger Aggregate”
Claim · model-written summary
A. ochraceus accounted for 89.55% of the isolated ochratoxin A producing species.
- Taxon
- Coffea arabica L.Coffea arabicat0
- Interactor
- A. ochraceusAspergillus ochraceuse0pathogen
- Outcome
- most frequent species which produces ochratoxin Ae0
- Value
- 89.55%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green coffee beans (Coffea arabica L.)”
e0“The most frequent species which produces ochratoxin A among the isolated ones was A. ochraceus, corresponding to 89.55%”
Claim · model-written summary
Conventional and organic coffee cultivation did not differ significantly in the presence of ochratoxigenic A. ochreceus.
- Taxon
- Coffea arabica L.Coffea arabicat0
- Interactor
- A. ochreceuse0pathogen
- Outcome
- presence of ochratoxigenic A. ochreceuse0
- Direction
- no significant differencee0
- Comparator
- conventional and organic cultivation systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green coffee beans (Coffea arabica L.)”
e0“There was no significant difference regarding the presence of ochratoxigenic A. ochreceus between the conventional and organic cultivation systems”
Claim · model-written summary
The authors infer similar ochratoxin contamination risk under both coffee cultivation systems.
- Taxon
- Coffea arabica L.Coffea arabicat0
- Outcome
- contamination riske0
- Direction
- similare0
- Comparator
- both cultivation systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“green coffee beans (Coffea arabica L.)”
e0“the contamination risk is similar for both cultivation systems”