RT Journal Article T1 Novel liquid chromatography–mass spectrometry method for sensitive determination of the mustard allergen Sin a 1 in food A1 Posada-Ayala, Maria A1 Álvarez Llamas, Gloria A1 Maroto, Aroa S. A1 Maes, Xavier A1 Muñoz-Garcia, Esther A1 Villalba Díaz, María Teresa A1 Rodríguez García, Rosalía A1 Perez-Gordo, Marina A1 Vivanco Martínez, Fernando A1 Pastor Vargas, Carlos A1 Cuesta-Herranz, Javier AB Mustard is a condiment added to a variety of foodstuffs and a frequent cause of food allergy. A new strategy for the detection of mustard allergen in food products is presented. The methodology is based on liquid chromatography analysis coupled to mass spectrometry. Mustard allergen Sin a 1 was purified from yellow mustard seeds. Sin a 1 was detected with a total of five peptides showing a linear response (lowest LOD was 5ng). Sin a 1 was detected in mustard sauces and salty biscuit (19±3mg/kg) where mustard content is not specified. Sin a 1, used as an internal standard, allowed quantification of this mustard allergen in foods. A novel LC/MS/MS SRM-based method has been developed to detect and quantify the presence of mustard. This method could help to detect mustard allergen Sin a 1 in processed foods and protect mustard-allergic consumers. PB Elsevier SN 0308-8146 YR 2015 FD 2015 LK https://hdl.handle.net/20.500.14352/107107 UL https://hdl.handle.net/20.500.14352/107107 LA eng NO Posada-Ayala M, Alvarez-Llamas G, Maroto AS, Maes X, Muñoz-Garcia E, Villalba M, Rodríguez R, Perez-Gordo M, Vivanco F, Pastor-Vargas C, Cuesta-Herranz J. Novel liquid chromatography-mass spectrometry method for sensitive determination of the mustard allergen Sin a 1 in food. Food Chem. 2015 Sep 15;183:58-63. doi: 10.1016/j.foodchem.2015.02.139. Epub 2015 Mar 12. Erratum in: Food Chem. 2016 Sep 1;206:291. doi: 10.1016/j.foodchem.2016.03.090. PMID: 25863610. DS Docta Complutense RD 8 abr 2025