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RESEARCH PRODUCT
Bimodal porous silica nanomaterials as sorbents for an efficient and inexpensive determination of aflatoxin M1 in milk and dairy products
Adela R. Mauri-aucejoEnric Pellicer-castellPedro AmorósJosé Manuel Herrero-martínezCarolina Belenguer-sapiñasubject
AflatoxinAnalytefood.ingredientSorbentChromatographyMaterials science010401 analytical chemistryExtraction (chemistry)04 agricultural and veterinary sciencesGeneral MedicineMesoporous silica040401 food science01 natural sciences0104 chemical sciencesAnalytical ChemistryMatrix (chemical analysis)0404 agricultural biotechnologyfoodSkimmed milkSolid phase extractionFood Sciencedescription
Abstract An extraction procedure was developed for the determination of aflatoxin M1 in milk and dairy products. A sorbent based on UVM-7 mesoporous silica was used as solid phase for the sample clean-up, and the analyte determination was carried out by HPLC coupled to a fluorescence detector. The material architecture was characterized by transmission electronic microscopy, X-ray diffraction, 29Si NMR and nitrogen adsorption-desorption. After the optimization of extraction parameters, the influence of the matrix has been evaluated, obtaining recoveries in the range 78–105% for whole and skimmed milk and yogurt matrix. The reusability of the material was also proved. The sensitivity of the method was also evaluated, and a LOQ (0.015 μg kg−1) below the European legislation limit was obtained. The procedure was successfully applied for the determination of aflatoxin M1 in real samples. The results were compared with those obtained with a reference method, being the results statistically comparable.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-12-01 | Food Chemistry |