Please use this identifier to cite or link to this item: http://cybertesis.uni.edu.pe/handle/uni/3556
Title: Magnetically separable polymer (Mag-MIP) for selective analysis of biotin in food samples
Authors: Uzuriaga Sánchez, Rosario Josefina
Khan, Sabir
Wong, Ademar
Picasso Escobar, Gino Italo
Pividori, Maria Isabel
Taboada Sotomayor, Maria Del Pilar
Keywords: Magnetic-MIP;Biotin;Magnetic nanoparticles;Imprinted polymers;Milk
Issue Date: Jun-2015
Publisher: Elsevier Ltd
Related URI: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930960581&doi=10.1016%2fj.foodchem.2015.05.129&partnerID=40&md5=fe55b5bec8603d8bbfb0c5f41dfcee7e
Abstract: This work presents an efficient method for the preparation of magnetic nanoparticles modified with molecularly imprinted polymers (Mag-MIP) through core-shell method for the determination of biotin in milk food samples. The functional monomer acrylic acid was selected from molecular modeling, EGDMA was used as cross-linking monomer and AIBN as radical initiator. The Mag-MIP and Mag-NIP were characterized by FTIR, magnetic hysteresis, XRD, SEM and N2-sorption measurements. The capacity of Mag-MIP for biotin adsorption, its kinetics and selectivity were studied in detail. The adsorption data was well described by Freundlich isotherm model with adsorption equilibrium constant (KF) of 1.46 mL g-1. The selectivity experiments revealed that prepared Mag-MIP had higher selectivity toward biotin compared to other molecules with different chemical structure. The material was successfully applied for the determination of biotin in diverse milk samples using HPLC for quantification of the analyte, obtaining the mean value of 87.4% recovery.
URI: http://cybertesis.uni.edu.pe/handle/uni/3556
ISSN: 3088146
E-mail: mpilar@iq.unesp.br
Rights: info:eu-repo/semantics/embargoedAccess
Appears in Collections:Instituto General de Investigación (IGI)

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