Biological Control of Aflatoxin Contamination

Page 3

Storage Results

Treatment of peanuts in the field with the competitive fungus has a beneficial, carryover effect when peanuts go into storage. When field-treated and non-treated peanuts, which were not contaminated with aflatoxin, were stored under conditions that favored contamination, aflatoxin levels in peanuts that had been field-treated were reduced by 98% compared with untreated peanuts.9

Storage Test ResultsAflatoxin (ppb) Aflatoxin (ppb)
Treatment	Pre-storage	Post-storage
Control	0	78.0
Treated	0	1.4
Reduction	0	98.2

Current Status

This patented biocontrol technology has been licensed by Circle One Global, Inc., which has named the product for the purpose of commercialization.10  Currently, the EPA process is ongoing for obtaining the full Section 3 registration, which will allow to be commercialized in early 2004.

1. Cast, 1989. Mycotoxins: economic and health risks. Council for Agricultural Science and Technology. Ames, IA 50010. Diener, U. L., R. J. Cole, T. H. Sanders, G. A. Payne, L. S. Lee and M. A. Klich. 1987. Epidemiology of aflatoxin formation by Aspergillus flavus. Annu. Rev. Phytopathol. 25:249-270. Kurtzman. C. P., B. W. Horn, and C. W. Hesseltine. 1987 Aspergillus nomius, a new aflatoxin-producing species related to Aspergillus flavus and Aspergillus tamarii, Antonie van Leeuwenhoek 53:147-158.

2. Cole, R. J., T. H. Sanders, J. W. Dorner, and P. D. Blakenship. 1989. Environmental conditions required to induce preharvest aflatoxin contamination of groundnuts: summary of six years’ research. p. 279-287. In. S. D. Hall (ed.). Aflatoxin contamination of groundnut: proceedings of the international workshop. 6-9 October, 1987, ICRSAT Center, Patancheru, India. Cotty, P. J., and L. S. Lee. 1989. Aflatoxin contamination of cottonseed: comparison of pink bollworm damaged and undamaged bolls, Trop. Sci. 29:273-277. Hill, R. A., D. M. Wilson, W. W. McMillian, N. W. Widstrom, R. J. Cole, T. H. Sanders, and P. D. Blankenship. 1985. Ecology of the Aspergillus flavus group and aflatoxin formation in maize and groundnut. p. 79-95. In. J. Lacey (ed.). Trichothecenes and other Mycotoxins. John Wiley & Sons, Chichester, UK. Payne, G. A. 1992. Aflatoxin in maize. Crit. Rev. Plant Sci. 10:423-440.

3. Van Egmond, H. P. 1995. Mycotoxins: regulations, quality assurance and reference materials. Food Addit. Contam. 12:321-330.

4. Approaches to elimination of aflatoxin contamination in peanuts. International Institute of Tropical Agriculture. Ph Action News, June 2000. http://www.iita.org/info/phnews2/ph-st1.htm.

5. Suszkiw, J. 2002. Protecting Peanuts from Aflatoxin. Agricultural Research, January, 2002. p. 18.

6. See endnote 4.

7. Dorner, J. W., B. W. Horn, S. Hilton, III, M. A. Schweikert, V. A. Orner. Biological Control of Aflatoxin Contamination: using competitive fungi to reduce aflatoxin in peanuts. USDA, ARS, National Peanut Research Laboratory, Dawson, GA 39842-0509: http://nprl.usda.gov.

8. see endnote 7.

9. Dorner, J. W. and R. J. Cole. 2002. Effect of application of nontoxigenic strains of Aspergillus flavus and A. paraciticus in subsequent aflatoxin contamination of peanuts in storage, J. Stored Prod. Res., 38:329-339.

10. see endnote 7.

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