Spectrofluorimetric Determination of Aflatoxin B-1 in Winter Herbal Teas via Magnetic Solid Phase Extraction Method by using Metal-Organic Framework (MOF) Hybrid Structures Anchored with Magnetic Nanoparticles

Durmus Z., Kurt B. , GAZİOĞLU I. , SEVGİ E. , Hancer C. K.

APPLIED ORGANOMETALLIC CHEMISTRY, 2020 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume:
  • Publication Date: 2020
  • Doi Number: 10.1002/aoc.5375
  • Title of Journal : APPLIED ORGANOMETALLIC CHEMISTRY
  • Keywords: aflatoxin B, magnetic nanoparticles, metal-organic framework (MOF), solid-phase microextraction (SPME), Spectrofluorimetry, POLYCYCLIC AROMATIC-HYDROCARBONS, LIQUID-CHROMATOGRAPHY, MILK, FOOD, M-1, PERFORMANCE, OCHRATOXIN, ADSORPTION, ISTANBUL, MIL-101

Abstract

MIL53(Al)-SiO2@Fe3O4 composite was prepared by co-precipitation route with a typical Stober synthetic process and ultrasonic-agitation, then subsequently utilized as a multi-component novel sorbent in solid-phase microextraction (SPME) of aflatoxin B1 in winter herbal teas. Microstructural properties of MIL53(Al)-SiO2@Fe3O4 composite was characterized by using Fourier transform infrared (FTIR) spectroscopy, powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) methods, and Brunauer-Emmett-Teller (BET) surface area measurement. The MIL53(Al)-SiO2@Fe3O4 composite was found to be a very effective sorbent in spectrofluorimetric determination of aflatoxin B1 (AFB1) in winter herbal teas via magnetic solid-phase extraction (SPE) route. The proposed method showed a wide linear range from 0.5 to 150 ng/ml, low limit of detection (LOD = 0.5 ng/ml), and an acceptable recovery values (70.7-96.5%) in real samples analysis. This study shows that the suggested method possesses an important potential to use for detecting AFB1 in quality control laboratories.