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 409496
Title Verification of Organic Feed Identity by Fatty Acid Fingerprinting
Author(s) Tres, A.; Ruth, S.M. van
Source Journal of Agricultural and Food Chemistry 59 (2011)16. - ISSN 0021-8561 - p. 8816 - 8821.
DOI http://dx.doi.org/10.1021/jf2016682
Department(s) RIKILT B&T Authenticiteit en Nutrienten
RIKILT - Analyse & Ontwikkeling
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) nutritional-value - eggs - products - quality - hens
Abstract The origin and authenticity of feed for laying hens is an important and fraud-susceptible aspect in the production of organic eggs. Chemical fingerprinting in combination with chemometric methods is increasingly used in conjunction with administrative controls to verify and safeguard the authenticity of food commodities. On the basis of fatty acid fingerprinting data of 36 organic and 60 conventional feeds, we have developed a chemometric classification model to discriminate between organic and conventional chicken feed. A two-factor partial least squares–discriminant analysis (PLS–DA) model was developed using 70% of the original data. External validation of the model with the remaining 30% of the data showed that all of the organic feeds and 90% of the conventional feeds (18 of 20) were correctly identified by the model. These results indicate that the PLS–DA model developed in this study could be routinely used to verify the identity of unknown or suspicious feed for laying hens.
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