title: Development of an immunochromatographic test strip for simultaneous qualitative and quantitative detection of ochratoxin A and zearalenone in cereal.
abstract: BACKGROUND
  Ochratoxin A (OTA) and zearalenone (ZEN) are natural products of filamentous fungi that are harmful to humans and animals exposed to them even in extremely low concentration. The immunochromatographic test strip has become a popular diagnostic tool for detecting analytes. Its major advantages are that results can be obtained within 5-10 min, all needed reagents are included in the strip and it can be used to detect OTA and ZEN contamination in spots. In this study a colloidal gold-based immunochromatographic test strip of competitive format was developed for the rapid simultaneous qualitative and quantitative detection of OTA and ZEN in corn and other cereals.
  
  
  RESULTS
  The test strip results with the naked eye showed that the sensitivities were 6 µg kg(-1) OTA and 20 µg kg(-1) ZEN in cereal, while those with a TSR3000 membrane strip reader showed that the IC50 values of OTA and ZEN were 1.7905 and 4.3514 ng mL(-1) and the lower detection limit (LDL) values were 0.7697 and 1.2000 µg kg(-1) respectively. These results were confirmed by high-performance liquid chromatography.
  
  
  CONCLUSIONS
  The immunochromatographic test strip developed in this study could be used for the rapid simultaneous, qualitative and quantitative screening of OTA and ZEN in corn samples. © 2015 Society of Chemical Industry.
authors.affiliation: College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, 730070, China.|Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
authors.forename: Yaning
authors.initials: Y
authors.lastname: Sun
authors.affiliation: Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
authors.forename: Guangxu
authors.initials: G
authors.lastname: Xing
authors.affiliation: Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
authors.forename: Jifei
authors.initials: J
authors.lastname: Yang
authors.affiliation: Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
authors.forename: Fangyu
authors.initials: F
authors.lastname: Wang
authors.affiliation: Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
authors.forename: Ruiguang
authors.initials: R
authors.lastname: Deng
authors.affiliation: Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.|College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.
authors.forename: Gaiping
authors.initials: G
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
authors.forename: Xiaofei
authors.initials: X
authors.lastname: Hu
authors.affiliation: College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, 730070, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D002846:Chromatography, Affinity / Q000379:methods*; D002851:Chromatography, High Pressure Liquid; D002523:Edible Grain / Q000737:chemistry*; D005506:Food Contamination / Q000032:analysis*; D017979:Gold Colloid; D006801:Humans; D057230:Limit of Detection; D009793:Ochratoxins / Q000032:analysis*; D003313:Zea mays; D015025:Zearalenone / Q000032:analysis*
chemical_list: D017979:Gold Colloid; D009793:Ochratoxins; C025589:ochratoxin A; D015025:Zearalenone
keywords: colloidal gold; immunoassay; ochratoxin A; zearalenone