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Natural phenols are a class of molecules found in abundance in plants. Many common foods contain rich sources of polyphenols which have antioxidant properties only in test tube studies. As interpreted by the Linus Pauling Institute, dietary polyphenols have little or no direct antioxidant food value following digestion. [7]
Foods with a high flavonoid content include parsley, onions, blueberries and strawberries, black tea, bananas, and citrus fruits. [11] One study found high flavonoid content in buckwheat. [12] Citrus flavonoids include hesperidin (a glycoside of the flavanone hesperetin), quercitrin, rutin (two glycosides of quercetin, and the flavone tangeritin.
Photo: iStock. Design: Eat This, Not That!Antioxidant-rich foods have long been championed by health professionals as crucial components of a healthy diet, backed by thousands of studies ...
And while phytonutrients and antioxidants are similar, they are not the same.Phytonutrients are found exclusively in plant-based foods, whereas antioxidants can also be found in non-plant sources.
He explains that these foods are rich in antioxidants, brain-healthy polyunsaturated fats, vitamins, minerals and fiber, noting, "This supply of nutrients helps support brain health by promoting ...
Proanthocyanidins are a class of polyphenols found in many plants, such as cranberry, blueberry, and grape seeds. Chemically, they are oligomeric flavonoids. Many are oligomers of catechin and epicatechin and their gallic acid esters. More complex polyphenols, having the same polymeric building block, form the group of condensed tannins.
The main source of polyphenols is dietary, since they are found in a wide array of phytochemical-bearing foods.For example, honey; most legumes; fruits such as apples, blackberries, blueberries, cantaloupe, pomegranate, cherries, cranberries, grapes, pears, plums, raspberries, aronia berries, and strawberries (berries in general have high polyphenol content [5]) and vegetables such as broccoli ...
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