Dietary intake of ochratoxin A from conventional and organic bread

Int J Food Microbiol. 2007 Aug 15;118(1):87-91. doi: 10.1016/j.ijfoodmicro.2007.05.011. Epub 2007 Jun 13.

Abstract

Ochratoxin A (OTA) was extracted from 100 bread samples by using accelerated solvent extraction (ASE) and analyzed with liquid chromatography coupled with fluorescence detection. The presence of OTA was confirmed by methyl-ester derivatization. Bread samples were bought from different bakeries and supermarkets, 74 of non-organic and 26 of organic bread. The incidence of OTA varied between 20.3% and 23.0% for non-organic and organic bread, respectively. The highest values were obtained with non-organic versus organic products, five samples exceeded the European maximum permitted limit of OTA (3 ng/g) for this product. Estimated daily intake of OTA in this study was 1.6 ng/kg b.w./day. This value represents 32% and 10% of the tolerable daily intake (TDI) according to the Scientific Committee on Food of the European Commission and the FAO/WHO Committee of Experts on Food Additives, respectively. The daily intake estimated from this study reflects the necessity to take a vigilant attitude to guarantee food safety.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Agriculture / methods*
  • Bread / analysis*
  • Chromatography, Liquid
  • Consumer Product Safety
  • Food Contamination / analysis*
  • Humans
  • Incidence
  • Ochratoxins / administration & dosage*
  • Ochratoxins / analysis*
  • Ochratoxins / isolation & purification
  • Spain

Substances

  • Ochratoxins
  • ochratoxin A