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A defoliated cotton field
Aflatoxin Reduction in Crops (ARC)
Aflatoxin Management through Improved Understanding of Aflatoxin-producing Fungi and the Aflatoxin Contamination Process
Sterilize and Inoculate Product


30g of sterile wheat is inoculated with a spore suspension of isolate AF36 and incubated in 250ml polycarbonate validation bottles at 31C for 7-9 days. During this period the fungus sporulates abundantly. The bottles are fitted with filters that allow gas exchange without loss of moisture.
The spores are then washed off into a large water container that will be used to inoculate the product.
Clean wheat is stored in an outdoor silo until it is needed. then it is sent up the elevator to a chute above the processor.
6000lbs of wheat is loaded into a double jacketed rotating steam processor where it is sterilized under pressure at 250C for several hours and then cooled.
The spore suspension is spread over the sterile wheat in the processor and the processor is rotated for an hour to evenly distribute spores.
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United States Department of Agriculture
Agricultural Research Service
ARC is housed at the University of Arizona,
Department of Plant Sciences
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The University of Arizona, Department of Plant Sciences, Division of Plant Pathology and Microbiology, PO Box 210036, Tucson, AZ 85721
Current Updates by Gabriel Barker sargasso@email.arizona.edu Tel: (520) 626-5704 Fax: (520) 626-5944