Abstract
The occurrence of the mycotoxins deoxynivalenol (DON) and ochratoxin A (OTA) in the winter wheat of 1997 and 1998 grown under organic farming conditions was investigated using ELISAs (R-Biopharm) for quantification. The influence of delayed drying of the grain after harvest on the development of DON and OTA was determined in storage trials (moisture: 17% and 20%; temperature: 20 degrees C; duration: four and six weeks). The Tox5 PCR assay was used both to detect Fusarium species with the potential to produce trichothecenes and as a measure of their relative DNA content during the storage trials. The intensity of the PCR signals was correlated with the DON concentration. Fusarium species were identified microscopically by standard methods. All the freshly harvested grain samples were contaminated with DON and showed further increases in the DON concentration during storage. OTA contamination was found in 14.3% of the 1997 samples and in 24.1% of the 1998 samples. OTA increased during storage trials of the 1997 samples but not in the 1998 samples.
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Claims 7
Claim · model-written summary
All freshly harvested wheat grain samples contained DON.
- Taxon
- wheat
Triticum aestivumt0 - Organ / stage
- freshly harvested graine0
- Outcome
- contaminated with DONe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the freshly harvested grain samples were contaminated with DON and showed further increases in the DON concentration during storage.”
t0“German wheat”
Claim · model-written summary
DON concentration increased during wheat grain storage.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- graine0
- Treatment
- during storagee0
- Outcome
- DON concentratione0
- Direction
- increasese0
- Comparator
- freshly harvested grain samplese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the freshly harvested grain samples were contaminated with DON and showed further increases in the DON concentration during storage.”
t0“German wheat”
Claim · model-written summary
OTA contamination occurred in 14.3% of 1997 wheat samples.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- OTA contaminatione0
- Value
- 14.3%e0
- Qualifier
- 1997 samplese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OTA contamination was found in 14.3% of the 1997 samples and in 24.1% of the 1998 samples.”
t0“German wheat”
Claim · model-written summary
OTA contamination occurred in 24.1% of 1998 wheat samples.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- OTA contaminatione0
- Value
- 24.1%e0
- Qualifier
- 1998 samplese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OTA contamination was found in 14.3% of the 1997 samples and in 24.1% of the 1998 samples.”
t0“German wheat”
Claim · model-written summary
OTA increased during storage of the 1997 wheat samples.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- storage trialse0
- Outcome
- OTAe0
- Direction
- increasede0
- Qualifier
- 1997 samplese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OTA increased during storage trials of the 1997 samples but not in the 1998 samples.”
t0“German wheat”
Claim · model-written summary
OTA did not increase during storage of the 1998 wheat samples.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- storage trialse0
- Outcome
- OTAe0
- Direction
- note0
- Qualifier
- 1998 samplese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OTA increased during storage trials of the 1997 samples but not in the 1998 samples.”
t0“German wheat”
Claim · model-written summary
PCR signal intensity correlated with DON concentration.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- DON concentratione0
- Qualifier
- intensity of the PCR signalse0
Not reportedSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The intensity of the PCR signals was correlated with the DON concentration.”
t0“German wheat”
The same questions in other papers
storage · disease · Triticum aestivum (wheat)Positive and negative results
10 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
9 papers more in this group
See all 13 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.