Journal
FOOD CHEMISTRY
Volume 160, Issue -, Pages 104-111Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2014.03.077
Keywords
Quantification; Food allergens; Real-time PCR; Modified standard addition; Matrix-adapted quantification; Internal standard material
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Governments all over the world have implemented regulatory frameworks concerning food allergen labelling and established or discussed the implementation of thresholds. Therefore, quantitative methods are needed for their surveillance. DNA-based approaches using a matrix-adapted calibration, an internal standard material and a modified standard addition have been developed. In order to enable a comparative assessment of the available quantification methods, experimental framework conditions and uniform performance criteria were defined. For the evaluation of the experimental results using homogenous sample material, the recovery, repeatability and reproducibility were considered along with the limit of detection and the limit of quantification. In addition, muffin dough and muffins spiked with sesame were analysed to assess the suitability of the methods to quantify sesame in model foods. The modified standard addition emerged from the comparative assessment and the analysis of the model foods to be the most appropriate method to quantify traces of allergens in food. (C) 2014 Published by Elsevier Ltd.
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