Magnetic nanobeads as support for zinc(II)-cyclen complexes: Selective and reversible extraction of riboflavin

Abstract

Fishing for riboflavin: Highly magnetic polymer-coated Fe/C nanoparticles are used as supports for zinc(II)-cyclen complexes. Quantitative and reversible extraction of riboflavin (vitamin B2) from aqueous solutions and a vitamin dietary supplement is achieved retaining high efficacy for six consecutive cycles. Applying an external magnetic field readily recycles the nanobeads. © 2012 The Authors.