Development of a monoclonal antibody-based indirect competitive immunosorbent assay for 4(5)-Methylimidazole detection in caramels

卷:170

Wu, Xin-Lan ; Yu, Shu-Juan ; Kang, Ke-Ren

关键词: 4(5)-Methylimidazole;    Monoclonal antibodies;    ic-ELISA;   

DOI  :  10.1016/j.foodchem.2014.07.148

学科分类：食品科学和技术

【 摘 要 】

In this study, an indirect competitive enzyme-linked immunoassay (ic-ELISA) based on monoclonal antibody for 4(5)-Methylimidazole (4-MI) detection was described. The artificial antigens were prepared by conjugating bovine serum albumin (BSA) or ovalbumin (OVA) with the hapten of 4-MI. And monoclonal antibody, evaluated by ic-ELISA, was obtained by immunizing BABL/c mice. After optimizing, a standard curve for ic-ELISA detection on 4-MI was obtained with the linear detection range of 0.64-20.48 mg/L. The cross-reactivity (CR) of all the structural analogues of 4-MI was less than 5.62%. The recoveries of 4-MI in caramels detection were ranged from 88.69% to 114.09%, with relative standard deviation (n = 3) below 8.07%. The results suggested that the established ic-ELISA is promising for 4-MI commercial detection in caramels. (C) 2014 Elsevier Ltd. All rights reserved.