Multicolor and Ultrasensitive Enzyme-Linked Immunosorbent Assay Based on the Fluorescence Hybrid Chain Reaction for Simultaneous Detection of Pathogens

2019 ◽  
Vol 67 (33) ◽  
pp. 9390-9398 ◽  
Author(s):  
Xi Lv ◽  
Yanmei Huang ◽  
Daofeng Liu ◽  
Chengwei Liu ◽  
Shan Shan ◽  
...  
2016 ◽  
Vol 34 (No. 5) ◽  
pp. 429-438 ◽  
Author(s):  
Yang Wei ◽  
Zhu Jie ◽  
Liu Ming-Qi ◽  
Dai Xian-Jun

To assemble an indirect competitive enzyme-linked immunosorbent assay (ELISA) for estimating two strobilurin fungicides at the same time, the hapten was synthesised which contained the common active group, (E)-2-(2-bromo-phenyl)-2-(methoxyimino) acetic acid methyl ester (OEBr) in kresoxim-methyl and trifloxystrobin. The immunogen and coating antigen were respectively prepared through conjugating the above-mentioned hapten with BSA and OVA by the mixed anhydride and activated ester methods, and polyclonal antibodies were produced by immunised rabbits. An enzyme-linked immunosorbent assay was developed for simultaneous detection of kresoxim-methyl and trifloxystrobin. In ELISA, the antiserum showed high affinity and sensitivity to kresoxim-methyl and trifloxystrobin, and their IC<sub>50</sub> value and detection limit (expressed as IC<sub>10</sub>) were 14.7 and 0.0044 µg/ml, respectively, for kresoxim-methyl, and 22.9 and 0.014 µg/ml, respectively for trifloxystrobin. The cross-reaction rate was below 0.1% for other strobilurin fungicides. Recovery study of ELISA from spiked samples of homogenised peeled oranges (final concentrations of 100, 10, and 1 µg/ml) resulted in recovery levels in the range of 82–104%.


2003 ◽  
Vol 32 (5) ◽  
pp. 545-550 ◽  
Author(s):  
G. Dhinakar Raj ◽  
S. Sivakumar ◽  
K. Matheswaran ◽  
M. Chandrasekhar ◽  
V. Thiagarajan ◽  
...  

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