Document Detail

Colloidal gold-based immunochromatographic test strip for rapid detection of abrin in food samples.
MedLine Citation:
PMID:  22221362     Owner:  NLM     Status:  In-Data-Review    
In the present study, we developed a convenient, rapid, and sensitive immunochromatographic (IC) test strip to detect abrin in assay buffer and spiked abrin in test food samples. The abrin IC test strip was based on a sandwich format consisting of a monoclonal antibody and a polyclonal antibody. The anti-abrin A chain monoclonal antibody from mice was immobilized on a porous nitrocellulose membrane as a capture antibody, while the anti-abrin polyclonal antibody from rabbits was conjugated to colloidal gold particles, serving as a detection antibody. Both visual observation and quantitative analysis indicated that the lower detection of the strip was about 3 ng/ml when abrin was directly spiked into milk, orange juice, and drinking water at a concentration of 3 to 60 ng/ml; the analytical recovery rate was 92.2 to 128%. With this method, abrin spiked into food could be detected in less than 10 min. Moreover, the IC test strip showed no cross-reaction with the closely related phytotoxin ricin. Therefore, our test strip is an ideal candidate for the development of a kit for rapid and quantitative detection of abrin in food samples.
Shan Gao; Chong Nie; Junhong Wang; Jing Wang; Lin Kang; Yang Zhou; Jing-Lin Wang
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of food protection     Volume:  75     ISSN:  1944-9097     ISO Abbreviation:  J. Food Prot.     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-01-06     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7703944     Medline TA:  J Food Prot     Country:  United States    
Other Details:
Languages:  eng     Pagination:  112-7     Citation Subset:  IM    
State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, No. 20 Dongda Street, Fengtai District, Beijing 100071, People's Republic of China.
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