title: Fate of aflatoxin B(1) in contaminated corn gluten during acid hydrolysis.
abstract: BACKGROUND
  Aflatoxins are a group of mycotoxins that cause serious chronic disease outbreaks and contaminate several food products such as corn and its by-product, corn gluten. The aim of the current study was to evaluate the effect of hydrochloric acid (HCl) on aflatoxin B(1) (AFB(1) ) degradation in contaminated corn gluten under different HCl concentrations, hydrolysis temperatures and hydrolysis times.
  
  
  RESULTS
  During the wet milling process the highest AFB(1) level (45.68 µg kg(-1) ) (37.86%) was found in corn gluten fraction. Treatment with 1 mol L(-1) HCL at 110 °C resulted in degradation of AFB(1) by 27.6% (33.07 µg kg(-1) ) after 4 h and reached 42.5% (26.26 µg kg(-1) ) after 8 h. Increasing HCl concentration from 1 to 3 mol L(-1) HCl resulted in increased degradation of AFB(1) , while complete degradation occurred in the presence of 5 mol L(-1) HCl after 4 h at 110 °C. Meanwhile, half-life time of AFB(1) was recorded after 2 h at 100 °C and was < 2 h at 110 °C in the presence of 3 mol L(-1) HCl.
  
  
  CONCLUSIONS
  It could be demonstrated that the manufacture of hydrolyzed vegetable protein is a suitable method for decontamination of aflatoxin in highly contaminated grains, especially gluten fractions. The hydrolysis reaction could be considered in terms of first-order reaction kinetics of AFB(1) degradation.
authors.affiliation: Food Toxicology and Contaminant Department, National Research Centre, Dokki 12622, Cairo, Egypt. drsoheraly@hotmail.com
authors.forename: Soher E
authors.initials: SE
authors.lastname: Aly
authors.forename: Amal S
authors.initials: AS
authors.lastname: Hathout
mesh_terms: D016604:Aflatoxin B1 / Q000737:chemistry*; D002523:Edible Grain / Q000737:chemistry*; D005506:Food Contamination; D005983:Glutens / Q000737:chemistry* / Q000302:isolation & purification; D006358:Hot Temperature; D006851:Hydrochloric Acid; D006868:Hydrolysis; D003313:Zea mays / Q000737:chemistry*
chemical_list: D005983:Glutens; D016604:Aflatoxin B1; D006851:Hydrochloric Acid