Analytical and Bioanalytical Chemistry

, Volume 396, Issue 6, pp 2003–2022

Effect of food processing on plant DNA degradation and PCR-based GMO analysis: a review


DOI: 10.1007/s00216-009-3343-2

Cite this article as:
Gryson, N. Anal Bioanal Chem (2010) 396: 2003. doi:10.1007/s00216-009-3343-2


The applicability of a DNA-based method for GMO detection and quantification depends on the quality and quantity of the DNA. Important food-processing conditions, for example temperature and pH, may lead to degradation of the DNA, rendering PCR analysis impossible or GMO quantification unreliable. This review discusses the effect of several food processes on DNA degradation and subsequent GMO detection and quantification. The data show that, although many of these processes do indeed lead to the fragmentation of DNA, amplification of the DNA may still be possible. Length and composition of the amplicon may, however, affect the result, as also may the method of extraction used. Also, many techniques are used to describe the behaviour of DNA in food processing, which occasionally makes it difficult to compare research results. Further research should be aimed at defining ingredients in terms of their DNA quality and PCR amplification ability, and elaboration of matrix-specific certified reference materials.


Food processing DNA degradation GMO detection DNA quantification PCR analysis 

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  1. 1.Department of Food Science and Technology, Faculty of Biosciences and Landscape Architecture, University College GhentGhent University AssociationGhentBelgium

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