Reduction of Fumonisin Toxicity by Extrusion and Nixtamalization (Alkaline Cooking)

Kenneth Voss, Dojin Ryu, Lauren Jackson, Ronald Riley, Janee Gelineau-van Waes

Research output: Contribution to journalReview article

11 Scopus citations

Abstract

Fumonisins are mycotoxins found in corn. They are toxic to animals and cause cancer in rodents and neural tube defects in LM/Bc mice. Reducing their concentrations in corn-based foods is therefore desirable. Chemical analysis or in vitro bioassays of food extracts might not detect toxic fumonisin reaction products that are unknown or unextractable from food matrices, thus potentially underestimating in vivo toxicity. The effectiveness of two common cooking methods, extrusion and nixtamalization (alkaline cooking), to reduce the toxicity of fumonisin-contaminated corn grits (extrusion) and whole kernel corn (nixtamalization) was shown by means of rat feeding bioassays using fumonisin-specific kidney effects as indicators of potential toxicity. A third bioassay showed that in contrast to fumonisin B1 (FB1), hydrolyzed fumonisin B1 (HFB1; formed from FB1 during nixtamalization) did not cause neural tube defects in LM/Bc mice. The findings indicate that extrusion and nixtamalization reduce the potential toxicity of FB1-contaminated corn.

Original languageEnglish (US)
Pages (from-to)7088-7096
Number of pages9
JournalJournal of Agricultural and Food Chemistry
Volume65
Issue number33
DOIs
StatePublished - Aug 23 2017

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Agricultural and Biological Sciences(all)

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