NUTR 3330 Lecture 12: NUTR3330 Lecture 12
Document Summary
Plant polyphenols: secondary metabolites of plants, >8000 phenolic structures known, common structural feature, aromatic ring with at least one hydroxyl group, synthesized from 2 major pathways, 1. Flavonoids; what are they: flavonoids were discovered by nobel prize winning biochemists rusznyak and szent-ggyorgyi who labeled then vitamin p , p for pigment. Basic flavonoid structure: a ring usually rises from the acetate pathway and usually, b ring arises from the shikimate pathway, both a and b rings have oh groups attached, c ring determines the major class of flavonoid. Flavonoid classification: over 5000 have been discovered, 6 major subclasses, based on variations in the c-ring * know names, 1. Flavonoid food sources: widely distributed in foods and beverages of plant origin, fruit, vegetables, tea, cocoa, wine, we discussed food sources when studying oh of plant polyphenols. Purpose of flavonoid glycosylation: increase the polarity.
