SPR nanosensor based on molecularly imprinted polymer film with gold nanoparticles for sensitive detection of aflatoxin B1

Akgönüllü S., Yavuz Alagöz H., Denizli A.

TALANTA, cilt.219, ss.1-8, 2020 (SCI-Expanded)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 219
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.talanta.2020.121219
  • Dergi Adı: TALANTA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, L'Année philologique, Aerospace Database, Analytical Abstracts, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Chimica, Communication Abstracts, Compendex, EMBASE, Food Science & Technology Abstracts, Linguistic Bibliography, MEDLINE, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.1-8
  • Hacettepe Üniversitesi Adresli: Evet

Özet

Aflatoxins which are highly toxic, immunosuppressive and carcinogenic secondary metabolites produced naturally by Aspergillus flavus fungal species have a harm effect on human and animal health. Label free and rapid sensing of aflatoxin B1 (AFB1) has drawn the increased interest of highly sensitive and selective research. A highly sensitive and selective plasmonic sensing method was developed for the detection of AFB1 based on enhance-surface plasmon resonance nanosensor. Firstly, AFB1 and N-methacryloyl-l-phenylalanine were pre-complexed as a template molecule and functional monomer. Molecularly imprinted polymers with gold nanoparticles were coated onto surface plasmon resonance (SPR) gold chip surface. The AFB1 imprinted nanosensor shown a wide linear range, between 0.0001 ng mL−1 and 10.0 ng mL−1, and the limit of detection is 1.04 pg mL−1. Compared to the non-imprinted nanosensor, the imprinting factor was found to be 5.91. Also, detection studies of AFB1 were performed using various food samples. Finally, SPR nanosensors were performed selectivity, reusability and storage stability analysis.