A new Purdue University study suggests adding citrus juices or vitamin C to green tea may raise its antioxidant goodness, a new study suggests. The antioxidants are called catechins, and they are believed to be responsible for some of green tea's reported health benefits, such as reducing the risk of cancer, heart attack and stroke.
Using a laboratory model that simulates digestion in the stomach and small intestine, green tea was tested with a number of additives, including juices and creamers. It was found that citrus juice increased absorbable catechin levels by more than five times, while vitamin C boosted recoverable levels of the two most abundant catechins by six and 13 times.
So add some citrus juices to your cup after brewing.