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  • 1
    Electronic Resource
    Electronic Resource
    Effects of different cereal and oilseed substrates on the growth and production of toxins by Aspergillus alutaceus and Penicillium verrucosum (1990)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 38 (1990), S. 1506-1510 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00097a017
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Ochratoxin a production in Bavarian cereal grains stored at 15 and 19% moisture content (1992)
    Springer
    Archives of environmental contamination and toxicology 23 (1992), S. 259-265 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract Wheat, barley, and maize, each in 15-kg parcels at 15 and 19% initial moisture content (IMC), were kept in a Bavarian farm granary from June through November 1990. During this period, the grain at each IMC was analyzed for mycotoxins and monitored for grain temperature, carbon dioxide, seed germination, and microfloral incidence and abundance. Barley and maize stored for 20 weeks at 19% IMC contained ochratoxin A in amounts of 70 and 90 μg/kg, respectively. This mycotoxin was not detected in wheat stored at 19% IMC, nor in the grains stored at 15% IMC. Aflatoxin B1, sterigmatocystin, citrinin, and zearalenone were also assayed but not detected in grains stored at either IMC. Principal component analysis of the data indicated that ochratoxin A was produced in a damp niche in maize, when abundant metabolic activity and CO2 production by Penicillium glandicola and Aspergillus spp. were common.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00212284
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Mycotoxin formation in HY-320 wheat during granary storage at 15 and 19% moisture content (1990)
    Springer
    Mycopathologia 111 (1990), S. 181-189 
    Details
    ISSN: 1573-0832
    Keywords: mycotoxin ; ochratoxin ; Penicillium ; storage ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Eleven-kilogram parcels of HY-320 wheat, a cultivar of the new Canada Prairie Spring class, were kept at 15 and 19% initial moisture contents (IMC) in simulated storage in a Manitoba farm granary for 60 weeks to determine biotic and abiotic changes and mycotoxin production. Ochratoxin A reached a maximum of 0.24 ppm by week 20 in the 19% IMC wheat, but was absent in the 15% IMC wheat; no other mycotoxins were detected. Temperature, moisture content, O2 and CO2 levels, fat acidity values, seed germination, microfloral incidence and abundance, and the presence of other mycotoxins were monitored. Principal component analysis of all variables showed that the first principal components accounted for 32–41% of the system variability, and contained the ochratoxin A variable. Ochratoxin A was produced in moist grain that had decreased seed germination andAltermaria activity, and high fungal activity byPenicillium andAspergillus versicolor. Compared to other stored cereals previously studied, HY-320 wheat would be ranked in a low-risk category for mycotoxin formation, based on the ochratoxin A levels observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02282802
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  • 4
    Electronic Resource
    Electronic Resource
    Odor volatiles associated with mite-infested bin-stored wheat (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 713-724 
    Details
    ISSN: 1573-1561
    Keywords: Odor volatiles ; mites ; stored wheat ; Acarus siro ; Aeroglyphus robustus ; Lepidoglyphus destructor ; Acarina ; fungi ; ventilation ; tridecane ; citral
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Tridecane, not previously reported in infested bin-stored grain, was associated with three mite species,Acarus siro (L.),Aeroglyphus robustus Banks, andLepidoglyphus destructor (Schrank), which were introduced into 15.2% moisture content wheat stored in two unheated experimental bins in Manitoba during 1986–1987. The mites and volatiles were sampled at weekly to bimonthly intervals throughout the year. The mites produced tridecane all year, although they overwintered at low numbers. Ventilation of one bin at an airflow rate of 1 liter/sec/m3 did not appear to affect mite survival and volatile production. Citral, an alarm pheromone for mites, was detected in mite-infested bin-stored grain. In laboratory studies all three mite species produced tridecane in wheat incubated at 20 °C and 70% relative humidity for two weeks.Acarus siro andAeroglyphus robustus reared at 25 °C and 90% relative humidity for four weeks on wheat and fungus-inoculated wheat also produced tridecane. Production of tridecane byA. robustus andL. destructor is being reported for the first time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01016482
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