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  2. Polyphenol - Wikipedia

    en.wikipedia.org/wiki/Polyphenol

    Polyphenols (/ ˌ p ɒ l i ˈ f iː n oʊ l,-n ɒ l /) are a large family of naturally occurring phenols. [1] They are abundant in plants and structurally diverse. [1] [2] [3] Polyphenols include phenolic acids, flavonoids, tannic acid, and ellagitannin, some of which have been used historically as dyes and for tanning garments.

  3. Flavonoid - Wikipedia

    en.wikipedia.org/wiki/Flavonoid

    The terms flavonoid and bioflavonoid have also been more loosely used to describe non-ketone polyhydroxy polyphenol compounds, which are more specifically termed flavanoids. The three cycles or heterocycles in the flavonoid backbone are generally called ring A, B, and C. [ 2 ] Ring A usually shows a phloroglucinol substitution pattern.

  4. Phenols - Wikipedia

    en.wikipedia.org/wiki/Phenols

    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]

  5. Naturally occurring phenols - Wikipedia

    en.wikipedia.org/wiki/Naturally_occurring_phenols

    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.

  6. Proanthocyanidin - Wikipedia

    en.wikipedia.org/wiki/Proanthocyanidin

    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.

  7. Antioxidant effect of polyphenols and natural phenols

    en.wikipedia.org/wiki/Antioxidant_effect_of...

    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 ...

  8. Are seed oils toxic? It's complicated — here's what you need ...

    www.aol.com/seed-oils-toxic-complicated-mdash...

    These days, "seed oil" is more of a pejorative term than a technical definition, referring to oils high in omega-6 fatty acid, including: Canola. Corn. Soybean. Cottonseed. Grapeseed. Sunflower ...

  9. Tannin - Wikipedia

    en.wikipedia.org/wiki/Tannin

    In 1966, Edwin Haslam proposed a first comprehensive definition of plant polyphenols based on the earlier proposals of Bate-Smith, Swain and Theodore White, which includes specific structural characteristics common to all phenolics having a tanning property. It is referred to as the White–Bate-Smith–Swain–Haslam (WBSSH) definition.