Molecularly imprinted hydrogels as functional active packaging materials

卷:190

Benito-Pena, Elena ; Gonzalez-Vallejo, Victoria ; Rico-Yuste, Alberto ; Barbosa-Pereira, Letricia ; Manuel Cruz, Jose ; Bilbao, Ainhoa ; Alvarez-Lorenzo, Carmen ; Cruz Moreno-Bondi, Maria

Univ Santiago Compostela

关键词: Molecular imprinting;    Ferulic acid;    Binding isotherms;    Antioxidant capacity;    Food packaging;   

DOI  :  10.1016/j.foodchem.2015.05.128

学科分类：食品科学和技术

【 摘 要 】

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-methoxyphe nyl)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. (C) 2015 Elsevier Ltd. All rights reserved.