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Extract Of Cranberry Flavonoids Not As Effective At Fighting Infections As The Juice

October 31, 2011: 12:00 AM EST
Researchers at Worcester Polytechnic Institute studying whether a cranberry extract might offer more health benefits than the juice have found that the juice is better at preventing biofilm formation, a precursor of urinary tract infections (UTI). The study tested the group of flavonoids in cranberries known as proanthocyanidins or PACs, the ingredient scientists have assumed gives the juice its infection-fighting properties and therefore could be candidate for creation of an extract deliverable in pill form. The researchers tested the extract and the juice on E. coli bacteria, the primary cause of UTI, finding that the PACs were no “silver bullet,” showing only limited ability to reduce biofilm formation, and only after extended exposure to the E. coli.
Terri Camesano et al., "Impact of Cranberry Juice and Proanthocyanidins on the Ability of Escherichia coli to Form Biofilms", Food Science and Biotechnology, October 31, 2011, © Springer
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