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Reference type: Journal
Authors: Benito-Peña E, González-Vallejo V, Rico-Yuste A, Barbosa-Pereira L, Cruz JM, Bilbao A, Alvarez-Lorenzo C, Moreno-Bondi MC
Article Title: Molecularly imprinted hydrogels as functional active packaging materials.
Publication date: 2016
Journal: Food Chemistry
Volume: 190
Page numbers: 487-494.
DOI: 10.1016/j.foodchem.2015.05.128
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0308814615008729

Abstract: This paper describes the synthesis of novel molecularly imprinted hydrogels (MIHs) for the natural antioxidant ferulic acid (FA), and their application as packaging materials to prevent lipid oxidation of butter. A library of MIHs was synthesized using a synthetic surrogate of FA, 3-(4-hydroxy-3-methoxyphenyl)propionic acid (HFA), as template molecule, ethyleneglycol dimethacrylate (EDMA) as cross-linker, and 1-allylpiperazine (1-ALPP) or 2-(dimethylamino)ethyl methacrylate (DMAEMA), in combination with 2-hydroxyethyl methacrylate (HEMA) as functional monomers, at different molar concentrations. The DMAEMA/HEMA-based MIHs showed the greatest FA loading capacity, while the 1-ALLP/HEMA-based polymers exhibited the highest imprinting effect. During cold storage, FA-loaded MIHs protected butter from oxidation and led to TBARs values that were approximately half those of butter stored without protection and 25% less than those recorded for butter covered with hydrogels without FA, potentially extending the shelf life of butter. Active packaging is a new field of application for MIHs with great potential in the food industry
Template and target information: surrogate template, 3-(4-hydroxy-3-methoxyphenyl)propionic acid, HFA, ferulic acid, FA
Author keywords: molecular imprinting, ferulic acid, Binding isotherms, Antioxidant capacity, food packaging

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