MIPs logo MIPdatabase      Special issue call for papers   
Custom Search
Reference type: Journal
Authors: He J, Shen YZ, Chen S, Wei HL, Zhu J, You LQ, Lu K
Article Title: Preparation and evaluation of molecularly imprinted microspheres for solid-phase extraction of 1,4-hydroxybenzoic acid esters in soy.
Publication date: 2011
Journal: Journal of Separation Science
Volume: 34
Issue: (19)
Page numbers: 2739-2744.
DOI: 10.1002/jssc.201100452

Abstract: Molecularly imprinted microspheres (MIMs) were prepared by precipitation polymerization for the binding and recognition of 1,4-hydroxybenzoic acid esters. Ethyl p-hydroxybenzoate (EtPHB) was used as the template molecule, methacrylic acid as the functional monomer, ethylene dimethacrylate as the linking agent. It was evaluated by solid-phase extraction column packed with MIMs combined with liquid chromatography to determine trace preservatives including benzoic acid, methyl p-hydroxybenzoate, EtPHB, propyl p-hydroxybenzoate in food products. A solid-phase extraction based on MIM procedure was used to isolate four additives from the food matrix before quantitative analysis. The Scatchard plot suggested that the template - polymer system had two-site binding behavior with the dissociation constants of 0.3577 and 3.952 mg/g, respectively. The rebinding test, based on the molecularly imprinted solid-phase extraction column technique, showed the recoveries of soy samples spiked with four additives within 88.4 - 110.6%, with the relative standard deviations of 1.97"3.82%. Finally, the method was successfully applied for the analysis of parabens in foodstuff without traditional pretreatment
Template and target information: 1,4-hydroxybenzoic acid esters, ethyl p-hydroxybenzoate, EtPHB, benzoic acid, methyl p-hydroxybenzoate, propyl p-hydroxybenzoate, parabens
Author keywords: Ethyl p-hydroxybenzoate, molecularly imprinted microspheres, precipitation polymerization, Solid-phase extraction, Soy sample

  Periodic table Soup - the chemical formula for soup apron  Periodic table Bag bag  Meerkat somebody mention coffee mug


Join the Society for Molecular Imprinting
Logo of the Society for Molecular Imprinting

New items RSS feed
new items RSS feed  View latest updates

Sign-up for e-mail updates:
Choose between receiving an occasional newsletter or more frequent e-mail alerts.
Click here to go to the sign-up page.

Is your name elemental or peptidic? Enter your name and find out by clicking either of the buttons below!
Other products you may like:
view listings for MIP books on eBay:

Mickey Mouse 90th Anniversary banner