期刊
FOOD CHEMISTRY
卷 339, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2020.127857
关键词
Microfluidic system; Automated detection; Immunoassay chip; Fluorescence detection; Chloramphenicol; Milk
资金
- National Natural Science Foundation of China [61775140, 81830052]
- Defense Industrial Technology Development Program [TSXK20180917058-C]
- Shanghai Science and Technology Commission [19441904100]
An automated microfluidics system was developed for the detection of chloramphenicol (CAP) residues in milk, which had high reliability, low cost, a good detection limit, and recovery rate. This system showed significant potential for point-of-care testing (POCT) of CAP in milk.
Chloramphenicol (CAP) is a toxic substance for human health, and detection of CAP residues in milk is necessary. However, most of the traditional CAP detection methods including high performance liquid chromatography-tandem mass spectrometry (HPLC-MS) and enzyme-linked immunosorbent assay (ELISA) are time-consuming and complicated. Herein, an automated microfluidics system for CAP detection in milk was developed. The residual CAP of multiple milk samples was quantitatively detected via competitive immunoassay in a single microfluidic chip simultaneously and automatically, and the reliability of the method was confirmed by flow cytometry. Completion of the detection by the system required less than 20 min and the cost for the detection of ten samples was about US$2.5. The limit of detection was 0.05 mu g L-1, and the recovery rate of CAP in milk ranged from 91.3% to 105.5%. The microfluidic system developed in this study exhibited considerable potential in the point-of-care testing (POCT) of CAP in milk.
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