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Herbs and spices, nuts and algae are also potentially significant for supplying certain polyphenols. Some polyphenols are specific to particular food (flavanones in citrus fruit, isoflavones in soya, phloridzin in apples); whereas others, such as quercetin, are found in all plant products such as fruit, vegetables, cereals, leguminous plants ...
The phenolic unit can be found dimerized or further polymerized, creating a new class of polyphenol. For example, ellagic acid is a dimer of gallic acid and forms the class of ellagitannins, or a catechin and a gallocatechin can combine to form the red compound theaflavin, a process that also results in the large class of brown thearubigins in tea.
Phenolic compounds are classified as simple phenols or polyphenols based on the number of phenol units in the molecule. Phenol – the simplest of the phenols Chemical structure of salicylic acid, the active metabolite of aspirin. Phenols are both synthesized industrially and produced by plants and microorganisms. [2]
yellow pigments . Canthaxanthin paprika, mushrooms, crustaceans, fish and eggs.; β-Cryptoxanthin to vitamin A mango, tangerine, orange, papaya, peaches, avocado, pea ...
Spices, herbs, and essential oils are rich in polyphenols in the plant itself and shown with antioxidant potential in vitro. Red wine is high in total polyphenol count which supplies antioxidant quality which is unlikely to be conserved following digestion (see section below).
Flax seeds and sesame seeds contain high levels of lignans. [1] [8] The principal lignan precursor found in flaxseeds is secoisolariciresinol diglucoside.[1] [8] Other foods containing lignans include cereals (rye, wheat, oat and barley), soybeans, tofu, cruciferous vegetables, such as broccoli and cabbage, and some fruits, particularly apricots and strawberries. [1]
Baked Potato Slices. These baked potato slices are packed with cheesy bacon goodness and crisp up perfectly in the oven. A great alternative to regular baked potatoes, these slices make for an ...
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 ...