A simplified fluorescent lateral flow assay for melamine based on aggregation induced emission of gold nanoclusters.
Food Chem
; 385: 132670, 2022 Aug 15.
Article
em En
| MEDLINE
| ID: mdl-35318181
ABSTRACT
A novel lateral flow assay (LFA) was developed based on the aggregation induced emission (AIE) of gold nanoclusters (AuNCs) for the detection of melamine. We compared the interaction between melamine and AuNCs prepared with 6-Aza-2-thiothymine (ATT) and its four structural analogs as ligands and found that the ATT-AuNCs showed the best AIE induced by melamine. Then the ATT-AuNCs were directly immobilized on the test line of LFA strips as reporters. The sensing platform exhibited a linear response to melamine from 1 to 100 µM (R2 = 0.997) with a detection limit of 217 nM. Moreover, this LFA strip could discriminate 1.0 µM melamine clearly by the naked eyes within 3 min. The recoveries of 91.6-101.5% were attained in milk and baby formula samples. This strip inherited the superior characteristics of low background interference of aggregation-induced fluorescence recognition and LFA technology, thus effectively avoiding the use of antibodies, aptamers, and other biological elements.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Nanopartículas Metálicas
/
Ouro
Limite:
Animals
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article