how to make polyphenols and flavonoids replace vitamin c?

my suspension is just add an acid & magnesium to make it reducing, sour.

marmalade jam, with or without citrus, just needs to be very similar.

Nixtamalization
Enediols and Catechol

To make a natural reducing agent similar to vitamin C, you can create a concentrated extract from plants that are rich in powerful antioxidant compounds, such as polyphenols and flavonoids. These compounds, while not identical to vitamin C (ascorbic acid), function similarly by donating electrons to neutralize free radicals and reduce other chemical species.

Donating electrons: Phenolic compounds and flavonoids found in the extract have a chemical structure that allows them to readily donate electrons to unstable molecules (free radicals).
Neutralizing free radicals: By donating electrons, the antioxidants stabilize free radicals, which stops the chain reaction of oxidative damage. This is the same protective mechanism exhibited by vitamin C.
Inhibiting oxidation: In controlled chemical settings, these extracts have been shown to act as "green reductants" to drive reactions.

Instructions
Prepare the plant material. Grind or finely chop your chosen plant material. The smaller the particle size, the more surface area is exposed, which increases the extraction yield.
Combine and simmer. Add the ground plant material to a saucepan with water, using a ratio of roughly 1:10 (e.g., 1 part plant material to 10 parts water by weight). Bring the water to a boil, then reduce the heat and let it simmer for at least 30 minutes. Some research suggests that decoctions are often richer in phenolic compounds than infusions.
Strain the liquid. Strain the liquid through a fine sieve or cheesecloth to remove all solid plant matter. For a clearer product, you can strain it multiple times.

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Enediol-like Arrangement

Enediol-like arrangement: For many flavonoids, this is formed by a catechol group on the B-ring, specifically the presence of two hydroxyl groups on adjacent carbons.

Enediols are alkenes with a hydroxyl group on each carbon of the C=C double bond.

Enediols and Catechol
Enediol Definition:
An enediol is an organic molecule containing a carbon-carbon double bond (C=C) where both carbon atoms in the double bond are also attached to hydroxyl (-OH) groups.
Catechol's Role:
Catechol (1,2-dihydroxybenzene) is an aromatic compound, meaning its C=C double bond is part of a stable, cyclic structure called a benzene ring. Because the hydroxyl groups in catechol are attached to the carbons of the aromatic ring, catechol is often described as a type of aromatic enediol.