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Updated: Jan 24, 2026

Author Spotlight: Quantification of Aflatoxins and Phytoalexins in Peanut Seeds to Identify Genetic Resistance Against Aspergillus
Published on: April 19, 2024
Evidence for Degradation of Aflatoxin B1 by Flavobacterium aurantiacum
J E Line1, R E Brackett1, R E Wilkinson2
1Center for Food Safety and Quality Enhancement, Department of Food Science and Technology, Griffin, Georgia 30223.
Abstract:
The fate of [14C]aflatoxin B1 in the presence of Flavobacterium aurantiacum was determined. [14C]aflatoxin B1 was incubated with live or dead F. aurantiacum cells for up to 72 h. Samples were extracted with chloroform and the aqueous and non-polar phases were analyzed for 14C content over time. The normally chloroform-soluble [14C]aflatoxin B1 is rapidly converted to water-soluble degradation products by live cells. Some radioactivity was initially associated with live cells but was lost at about the same rate as the water-soluble degradation products accumulated. The evolution of 14CO2 by the live cells provides further evidence that at least a portion of the [14C]aflatoxin B1 is metabolized. Dead F. aurantiacum cells bind some aflatoxin but are unable to carry out the degradation to water-soluble compounds or carbon dioxide.
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