Article (Scientific journals)
A qPCR aptasensor for sensitive detection of aflatoxin M1
Guo, Xiaodong; Wen, Fang; Zheng, Nan et al.
2016In Analytical and Bioanalytical Chemistry, 408 (20), p. 5577–5584
Peer Reviewed verified by ORBi
 

Files


Full Text
Guo.AnalyticalBioanalyticalChemistry.2016.pdf
Author preprint (616.24 kB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Aflatoxin M1; Aptamer; food safety; RT-qPCR
Abstract :
[en] Aflatoxin M1 (AFM1), one of the most toxic mycotoxins, imposes serious health hazards. AFM1 had previously been classified as a group 2B carcinogen1 and has been classified as a group 1 carcinogen by the International Agency for Research on Cancer (IARC) of the World Health Organization (WHO).2 Determination of AFM1 thus plays an important role for quality control of food safety. In this work, a sensitive and reliable aptasensor was developed for the detection of AFM1. The immobilization of aptamer through a strong interaction with biotin–streptavidin was used as a molecular recognition element, and its complementary ssDNA was employed as the template for a real-time quantitative polymerase chain reaction (RT-qPCR) amplification. Under optimized assay conditions, a linear relationship (ranging from 1.0×10-4 to 1.0 µg L-1) was achieved with a limit of detection (LOD) down to 0.03 ng L-1. In addition, the aptasensor developed here exhibits high selectivity for AFM1 over other mycotoxins and small effects from cross-reaction with structural analogs. The method proposed here has been successfully applied to quantitative determination of AFM1 in infant rice cereal and infant milk powder samples. Results demonstrated that the current approach is potentially useful for food safety analysis, and it could be extended to a large number of targets.
Disciplines :
Chemistry
Author, co-author :
Guo, Xiaodong
Wen, Fang
Zheng, Nan
Li, Songli
Fauconnier, Marie-Laure  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie générale et organique
Wang, Jiaqi
Language :
English
Title :
A qPCR aptasensor for sensitive detection of aflatoxin M1
Publication date :
2016
Journal title :
Analytical and Bioanalytical Chemistry
ISSN :
1618-2642
eISSN :
1618-2650
Publisher :
Springer Science & Business Media B.V., Berlin, Germany
Volume :
408
Issue :
20
Pages :
5577–5584
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 May 2016

Statistics


Number of views
164 (11 by ULiège)
Number of downloads
724 (2 by ULiège)

Scopus citations®
 
27
Scopus citations®
without self-citations
23
OpenCitations
 
24

Bibliography


Similar publications



Contact ORBi