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Authors: Puoci F, Scoma A, Cirillo G, Bertin L, Fava F, Picci N
Article Title: Selective extraction and purification of gallic acid from actual site olive mill wastewaters by means of molecularly imprinted microparticles.
Publication date: 2012
Journal: Chemical Engineering Journal
Volume: 198-199
Page numbers: 529-535.
DOI: 10.1016/j.cej.2012.05.095
Alternative URL: http://www.sciencedirect.com/science/article/pii/S1385894712006857
Abstract: An innovative biocompatible approach for the selective recovery of Gallic Acid (GA) from actual site Olive Mill Wastewaters (OMWs) by means of Molecularly Imprinted Polymers (MIPs) was developed. Bulky MIPs with a high selectivity for GA were synthesized by a non-covalent approach using methacrylic acid as the functional monomer and ethylene glycol dimethacrylate as the crosslinker. Imprinting efficiency was evaluated in different water/ethanol solutions by determining α and ε parameter, by using pyrogallic acid as the template analogue: the highest GA recognition, both in terms of percentage and of imprinting effect (α= 32.7; ε= 4.2), was observed in pure ethanol. The efficiency of the developed extraction protocol was evaluated with an actual site OMW: a selective extraction of 80% of pure GA was achieved with high accuracy and precision, as shown by RSD% (4.3%) and recovery values (between 85 and 97%)
Template and target information: gallic acid, GA
Author keywords: Olive mill wastewaters, Polyphenols, Gallic acid, Molecularly imprinted polymers, solid phase extraction
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