期刊
FOOD CHEMISTRY
卷 257, 期 -, 页码 382-387出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2018.03.033
关键词
AMD; ELISA; DNA; AuNPs
资金
- National Natural Science Foundation of China, China [31772066]
- Jiangxi Special Fund for Agro-scientific Research in the Collaborative Innovation, China [JXXTCX201703-1]
Amantadine (AMD), a banned antiviral veterinary drug, is still being abused. This study developed a novel enzyme linked immunosorbent assay for the colorimetric detection of AMD involving DNA hybridization reaction and non-crosslinking gold nanoparticles (AuNPs) aggregation. Accordingly, the Primer 1-AuNPs-anti-AMD monoclonal antibody (mAb) could be captured by AMD artificial antigen on ELISA wells. Primer 2, which was complementary paired to Primer 1, was eventually added into the ELISA wells. After the hybridization reaction, the free Primer 2 in the supernatant was mixed with AuNPs and NaCl and induced a rapid color change of AuNPs. The lack of AMD in the sample resulted in capturing a substantial Primer 1-AuNPs-mAb complex and limited free Primer 2 in the supernatant. After adding NaCl, the color of AuNPs turned blue with limited Primer 2. This simple and visualized novel method had good sensitivity (0.033 mu M) and exhibited a potential application for AMD screening on site.
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