What compound in cranberries may prevent some bacteria from clinging to the uniary tract?

The compound in cranberries that may prevent some bacteria from adhering to the urinary tract is called proanthocyanidins. These are a type of polyphenol that can inhibit the adhesion of E. coli and other bacteria to the bladder walls, potentially reducing the risk of urinary tract infections (UTIs). This effect is often associated with the consumption of cranberry juice or supplements.