Biological Control of Aflatoxin Contamination in U.S. Crops and the Use of Bioplastic Formulations of Aspergillus flavus Biocontrol Strains to Optimize Application Strategies

Hamed K. Abbas, Cesare Accinelli, W. Thomas Shier

Research output: Contribution to journalReview articlepeer-review

26 Scopus citations

Abstract

Aflatoxin contamination has a major economic impact on crop production in the southern United States. Reduction of aflatoxin contamination in harvested crops has been achieved by applying nonaflatoxigenic biocontrol Aspergillus flavus strains that can out-compete wild aflatoxigenic A. flavus, reducing their numbers at the site of application. Currently, the standard method for applying biocontrol A. flavus strains to soil is using a nutrient-supplying carrier (e.g., pearled barley for Afla-Guard). Granules of Bioplastic (partially acetylated corn starch) have been investigated as an alternative nutritive carrier for biocontrol agents. Bioplastic granules have also been used to prepare a sprayable biocontrol formulation that gives effective reduction of aflatoxin contamination in harvested corn kernels with application of much smaller amounts to leaves later in the growing season. The ultimate goal of biocontrol research is to produce biocontrol systems that can be applied to crops only when long-range weather forecasting indicates they will be needed.

Original languageEnglish (US)
Pages (from-to)7081-7087
Number of pages7
JournalJournal of agricultural and food chemistry
Volume65
Issue number33
DOIs
StatePublished - Aug 23 2017

Keywords

  • Aspergillus flavus
  • aflatoxins
  • biocontrol
  • cottonseed
  • maize
  • peanuts
  • tree nuts

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