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Mycotoxin Research

, Volume 15, Issue 1, pp 33–38 | Cite as

Effect of heat treatments on stability of altemariol, alternariol monomethyl ether and tenuazonic acid in sunflower flour

  • Combina M 
  • Dalcero A 
  • Varsavsky E 
  • Torres A 
  • Etcheverry M 
  • Rodriguez M 
  • Gonzalez Quintana H 
Article

Abstract

A study was carried out to evaluate the effect of heat treatment on the stability of alternariol (AOH), alternariol monomethyl ether (AME) and tenuazonic acid (TeA) in sunflower flour and the effectiveness of this treatment by a biological assay in rats. The concentrations of AOH and AME remained constant during heating at 100°C for up to 90 minutes while TeA concentration decreased with time to 50% after 90 minutes. The most effective treatment in reducing AOH and AME levels was heating at 121°C for 60 minutes. Histopathological evaluation in the biological assay in rats fed withAlternaria toxins showed marked atrophy and fusion of villi in the intestines and liver cell damage; these lesions were less severe in rats fed heat-treated sunflower flour in line with the reduced toxin content. However, a lower weight gain and a noticeable renal damage in rats were produced when they fed decontaminated flour.

Key words

Alternaria mycotoxins alternariol alternariol monomethyl ether tenuazonic acid thermostability sunflower meal 

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Copyright information

© Society of Mycotoxin Research and Springer 1999

Authors and Affiliations

  • Combina M 
    • 1
  • Dalcero A 
    • 1
  • Varsavsky E 
    • 1
  • Torres A 
    • 1
  • Etcheverry M 
    • 1
  • Rodriguez M 
    • 2
  • Gonzalez Quintana H 
    • 3
  1. 1.Departamento de Microbiologίae InmunologίaUniversidad Nacional de Rίo CuartoRίo Cuarto, CórdobaArgentina
  2. 2.Departamento de Matemáticas, Facultad de Ciencias Exactas Fίsicas y NaturalesUniversidad Nacional de Rίo CuartoRίo Cuarto, CórdobaArgentina
  3. 3.Departamento de Patologίa Animal, Facultad de Agronomίa y VeterinariaUniversidad Nacional de Rίo CuartoRίo Cuarto, CórdobaArgentina

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