Booze on the shelf

Börje Sellergren, at the Technical University of Dortmund, Germany, and colleagues have synthesized an imprinted polymer that can remove riboflavin from milk, beer and multivitamin mixtures, and works well in water so doesn't require the use of toxic organic solvents. Riboflavin (vitamin B2) is responsible for driving photochemical oxidation in such products and so removing it should extend shelf-life considerably. A general approach for creating water-compatible molecularly imprinted polymers will open up many other similar applications in the food and drink industries.