Glucometer-based biosensor for the determination of ractopamine in animal-derived foods using rolling circle amplification

He F., Li T., Wang H., Du P., Wang W., Tan T., ...Daha Fazla

MICROCHIMICA ACTA, cilt.190, sa.4, 2023 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 190 Sayı: 4
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1007/s00604-023-05715-0
  • Dergi Adı: MICROCHIMICA ACTA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Analytical Abstracts, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, EMBASE, Food Science & Technology Abstracts, MEDLINE, Metadex, Pollution Abstracts, Civil Engineering Abstracts
  • Anahtar Kelimeler: Ractopamine, Rolling circle amplification, Glucometer, Gold nanoparticles, Portable sensing, HIGHLY SENSITIVE DETECTION, BLOOD-GLUCOSE BIOSENSORS, GOLD NANOPARTICLES, DNA, IMMUNOASSAY, PLATFORM
  • Atatürk Üniversitesi Adresli: Evet

Özet

Screening for persistent organic pollutants (POPs) in food is a complex and challenging process, as POPs can be present in very low levels and can be difficult to detect. Herein, we developed an ultrasensitive biosensor based on a rolling circle amplification (RCA) platform using a glucometer to determine POP. The biosensor was constructed using gold nanoparticle probes modified with antibodies and dozens of primers, magnetic microparticle probes conjugated with haptens, and targets. After competition, RCA reactions are triggered, numerous RCA products hybridize with the ssDNA-invertase, and the target is successfully transformed into glucose. Using ractopamine as a model analyte, this strategy obtained a linear detection range of 0.038-5.00 ng mL(-1) and a detection limit of 0.0158 ng mL(-1), which was preliminarily verified by screening in real samples. Compared with conventional immunoassays, this biosensor utilizes the high efficiency of RCA and the portable properties of a glucometer, which effectively improves the sensitivity and simplifies the procedures using magnetic separation technology. Moreover, it has been successfully applied to ractopamine determination in animal-derived foods, revealing its potential as a promising tool for POP screening.