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Reference type: Journal
Authors: Hadizadeh F, Hassanpour MM, Mohajeri SA
Article Title: Application of molecularly imprinted hydrogel for the preparation of lactose-free milk.
Publication date: 2013
Journal: Journal of the Science of Food and Agriculture
Volume: 93
Issue: (2)
Page numbers: 304-309.
DOI: 10.1002/jsfa.5757

Abstract: BACKGROUND: A variety of lactose imprinted hydrogels were prepared and their binding properties were studied in comparison with blank non-imprinted hydrogel. Methacrylamide and ethylene glycol dimethacrylate were used as functional monomer and cross-linker, respectively. Dimethylsulfoxide was also applied as polymerisation solvent. RESULTS: Different template/monomer ratios were studied and the optimised imprinted hydrogel (MIP2), with a lactose/methacrylamide ratio of 1:8, was selected in a rebinding test. In Scatchard analysis of MIP2-lactose interactions, the dissociation constant and maximum binding sites were 0.33 mmol L-1 and 67.76 μmol g-1 hydrogel, respectively. The selectivity of MIP2 for lactose in aqueous media was also evaluated in comparison with different mono- and disaccharides. The data showed that the affinity of MIP2 for lactose is significantly higher than other saccharides. The imprinted hydrogel was finally used as a sorbent for separation of lactose from milk. CONCLUSIONS: The results indicated that MIP2, as an optimised imprinted hydrogel, can effectively bind lactose and decrease its concentration in milk. Copyright © 2012 Society of Chemical Industry
Template and target information: lactose
Author keywords: Lactose, milk, Molecularly imprinted hydrogel, molecular recognition, selectivity

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