 1.
Crosslinked oligomers or polymers form different structures than originally
extracted from the grape.
2. Like
naturally occurring (4->8) links between monomers, acetaldehyde crosslinks
between monomers are hydrolysable under acidic conditions
3. Flavan-3-ol's, oligomers and polymers linked to
anthocyanins act as electron sinks, stabilizing the cation form (flavylium or
colored form), thereby, minimizing the formation of the hydrated or colorless
form of an anthocyanin.
4. Anthocyanins
act as terminal quenchers (stopping further polymerization). |
