Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 415423
Title Development of a multiplex DNA-based traceability tool for crop plant materials
Author(s) Voorhuijzen, M.M.; Dijk, J.P. van; Prins, T.W.; Hoef, A.M.A. van; Seyfarth, R.; Kok, E.J.
Source Analytical and Bioanalytical Chemistry 402 (2012)2. - ISSN 1618-2642 - p. 693 - 701.
DOI http://dx.doi.org/10.1007/s00216-011-5534-x
Department(s) Rikilt B&T Novel Foods en Agroketens
Rikilt B&T Toxicologie en Effectanalyse
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) rice oryza-sativa - basmati rice - wheat - fragrance - gene - pcr - adulteration - bread
Abstract The authenticity of food is of increasing importance for producers, retailers and consumers. All groups benefit from the correct labelling of the contents of food products. Producers and retailers want to guarantee the origin of their products and check for adulteration with cheaper or inferior ingredients. Consumers are also more demanding about the origin of their food for various socioeconomic reasons. In contrast to this increasing demand, correct labelling has become much more complex because of global transportation networks of raw materials and processed food products. Within the European integrated research project ‘Tracing the origin of food’ (TRACE), a DNA-based multiplex detection tool was developed—the padlock probe ligation and microarray detection (PPLMD) tool. In this paper, this method is extended to a 15-plex traceability tool with a focus on products of commercial importance such as the emmer wheat Farro della Garfagnana (FdG) and Basmati rice. The specificity of 14 plant-related padlock probes was determined and initially validated in mixtures comprising seven or nine plant species/varieties. One nucleotide difference in target sequence was sufficient for the distinction between the presence or absence of a specific target. At least 5% FdG or Basmati rice was detected in mixtures with cheaper bread wheat or non-fragrant rice, respectively. The results suggested that even lower levels of (un-)intentional adulteration could be detected. PPLMD has been shown to be a useful tool for the detection of fraudulent/intentional admixtures in premium foods and is ready for the monitoring of correct labelling of premium foods worldwide.
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