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Reference type: Journal
Authors: Lulinski P, Klejn D, Maciejewska D
Article Title: Synthesis and characterization of imprinted sorbent for separation of gramine from bovine serum albumin.
Publication date: 2016
Journal: Materials Science and Engineering: C
Volume: 65
Page numbers: 400-407.
DOI: 10.1016/j.msec.2016.04.051
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0928493116303496

Abstract: The aim of this study was to develop an efficient sorbent for separation of N,N-dimethyl-3-aminomethylindole (gramine) from bovine serum albumin. An imprinting technology was involved in the synthesis of polymers from nine different functional monomers in the presence of ethylene glycol dimethacrylate as a cross-linker. The analysis of binding capacities showed that the highest specificity towards gramine was achieved when 4-vinylbenzoic acid was used as the functional monomer in methanol to form the bulk imprinted polymer, MIP1 (imprinting factor equal to 21.3). The Scatchard analysis of MIP1 showed two classes of binding sites with the dissociation constants Kd equal to 0.105 and 6.52 μmol L-1. The composition and morphology of polymers were defined by 13C CP/MAS NMR, BET and SEM-EDS analyses. The recognition mechanism of MIP1 was tested using the structurally related bioanalytes, and the dominant role of indole moiety and ethylamine side chain was revealed. A new MISPE protocol was optimized for separation of gramine. The total recoveries on MIP1 were equal to 94 12 % from standard solutions and 85 11 % from bovine serum albumin
Template and target information: N,N-dimethyl-3-aminomethylindole, gramine
Author keywords: molecularly imprinted polymer, Gramine, solid phase extraction

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