Origin authentication of distillers' dried grains and solubles (DDGS) - Application and comparison of different analytical strategies

Philippe Vermeulen, Thorben Nietner, Simon A. Haughey, Zengling Yang, Noelia Tena, Hana Chmelarova, Saskia Van Ruth, Monika Tomaniova, Ana Boix, Lujia Han, Christopher T. Elliott, Vincent Baeten, Carsten Fauhl-Hassek

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In the context of products from certain regions or countries being banned because of an identified or non-identified hazard, proof of geographical origin is essential with regard to feed and food safety issues. Usually, the product labeling of an affected feed lot shows origin, and the paper documentation shows traceability. Incorrect product labeling is common in embargo situations, however, and alternative analytical strategies for controlling feed authenticity are therefore needed. In this study, distillers' dried grains and solubles (DDGS) were chosen as the product on which to base a comparison of analytical strategies aimed at identifying the most appropriate one. Various analytical techniques were investigated for their ability to authenticate DDGS, including spectroscopic and spectrometric techniques combined with multivariate data analysis, as well as proven techniques for authenticating food, such as DNA analysis and stable isotope ratio analysis. An external validation procedure (called the system challenge) was used to analyze sample sets blind and to compare analytical techniques. All the techniques were adapted so as to be applicable to the DDGS matrix. They produced positive results in determining the botanical origin of DDGS (corn vs. wheat), and several of them were able to determine the geographical origin of the DDGS in the sample set. The maintenance and extension of the databanks generated in this study through the analysis of new authentic samples from a single location are essential in order to monitor developments and processing that could affect authentication.

Original languageEnglish
Pages (from-to)6447-6461
Number of pages15
JournalAnalytical and Bioanalytical Chemistry
Volume407
Issue number21
Early online date30 Jun 2015
DOIs
Publication statusPublished - Aug 2015

Keywords

  • Authenticity
  • DDGS
  • Feed
  • Mass spectrometric method
  • Rapid spectroscopic method
  • Traceability

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry

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