2006
DOI: 10.1021/jf060714e
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Confirmation of Peanut Protein Using Peptide Markers in Dark Chocolate Using Liquid Chromatography−Tandem Mass Spectrometry (LC-MS/MS)

Abstract: Detection of peptides from the peanut allergen Ara h 1 by liquid chromatography-mass spectrometry (LC-MS) was used to identify and estimate total peanut protein levels in dark chocolate. A comparison of enzymatic digestion subsequent to and following extraction of Ara h 1 from the food matrix revealed better limits of detection (LOD) for the pre-extraction digestion (20 ppm) than for the postextraction digestion (50 ppm). Evaluation of LC-MS instruments and scan modes showed the LOD could be further reduced to… Show more

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Cited by 77 publications
(60 citation statements)
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“…This method has been used, for example, for the detection and quantification of Ara h 1, Ara h 2 and Ara h 3/4 from peanut (Shefcheck et al, 2006;Careri M. et al, 2007) and of casein from cow's milk in complex food matrices.…”
Section: Isotopically Labelled Synthetic Peptide Methodsmentioning
confidence: 99%
“…This method has been used, for example, for the detection and quantification of Ara h 1, Ara h 2 and Ara h 3/4 from peanut (Shefcheck et al, 2006;Careri M. et al, 2007) and of casein from cow's milk in complex food matrices.…”
Section: Isotopically Labelled Synthetic Peptide Methodsmentioning
confidence: 99%
“…Shefcheck et al [198,199] selected Ara h 1 peptides for the detection of peanut in vanilla ice cream and dark chocolate using selected ion monitoring. Increasing the selectivity of allergen identification, optimal markfi ers for the detection of peanut allergens Ara h 1, Ara h 2, and/or Ara h 3 varied based upon selection criteria, including peptide abundance, epitope recognition, thermal processing, and isoform equivalence [200][201][202].…”
Section: Peanutmentioning
confidence: 99%
“…The method was improved and applied to dark chocolate (Shefcheck et al, 2006). Two peptides were chosen as biomarkers of Ara h 1.…”
Section: Mass Spectrometrymentioning
confidence: 99%