High affinity antibody based on a rationally designed hapten and development of a chemiluminescence enzyme immunoassay for quantification of Alternariol in fruit Juice, maize and flour.
Food Chem
; 283: 359-366, 2019 Jun 15.
Article
em En
| MEDLINE
| ID: mdl-30722884
ABSTRACT
Alternariol (AOH), a secondary metabolites of the genus Alternaria, is a genotoxic mycotoxin. Because the previous "Mannich antigen" for AOH readily underwent unstable induction, a new AOH hapten was designed for inducing a high-quality antibody against AOH using a conjugate of the AOH carboxymethyl derivative with a carrier protein as the immunogen. A competitive indirect chemiluminescence enzyme immunoassay (ciCLEIA) for AOH was optimized and showed good sensitivity (limit of detection 0.068â¯ng/mL), a linear range (0.11-1.23â¯ng/mL), and negligible cross-reactivity with analogues. Average rates of recovery from spiked samples (juice and cereal) were between 72.7% and 115.8%, with coefficients of variation <14.3%. Results from ciCLEIA correlated well with those of high-performance liquid chromatography coupled with tandem mass spectrometry, meaning the proposed method might be an effective screening tool for detection of AOH in food samples.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Técnicas Imunoenzimáticas
/
Zea mays
/
Farinha
/
Sucos de Frutas e Vegetais
/
Lactonas
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article