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Grapes have antioxidant properties and all varieties — red, black and green — contain polyphenols, ... according to the National Cancer Institute. The fruit is good for the gut, with plenty of ...
Citrus fruits contain various polyphenols, which may include furanocoumarins and naringin, such as bergamottin, dihydroxybergamottin, and bergapten. [14] Grapefruit, Seville oranges, [15] and bergamot [16] contain naringin. Furanocoumarins may have a stronger effect than naringin. [15] [17]
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]
In 1988, hemolytic anemia following polyphenol consumption was documented, resulting in the withdrawal of a catechin-containing drug. [84] Polyphenols, particularly in beverages that contain them in high concentrations (tea, coffee, etc), inhibit the absorption of non-haem iron when consumed together in a single meal.
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Others, such as some polyphenols and flavonoids, may be pro-oxidants in high ingested amounts. [23] Non-digestible dietary fibers from plant foods, often considered as a phytochemical, [24] are now generally regarded as a nutrient group having approved health claims for reducing the risk of some types of cancer [25] and coronary heart disease. [26]
Pectin, which many fruits also contain, does a similar thing to cholesterol, Freeman adds. ... Apples are a major source of fiber, and contain vitamin C and polyphenols, a type of phytochemical ...
The three flavonoid classes above are all ketone-containing compounds and as such, anthoxanthins (flavones and flavonols). [1] This class was the first to be termed bioflavonoids. The terms flavonoid and bioflavonoid have also been more loosely used to describe non-ketone polyhydroxy polyphenol compounds, which are more specifically termed ...