25 June 2013 --- Eating fruit or having a glass of red wine is seen as offering health benefits. The benefits are often pinned on polyphenols, natural chemicals—found in foods—referred to as flavonoids and phenolic acids, but also fragments of food proteins called peptides. Until recently, there were a large number of food and beverage products containing polyphenols and peptides that were making health claims, but evidence has been lacking.
