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When vitamin C (L-AA) is metabolised to form DHA, why is there remaining transition metals after...

When vitamin C (L-AA) is metabolised to form DHA, why is there remaining transition metals after this process which can go on to react with oxygen to form hydrogen peroxide?

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Answer #1

Basic fact:

"Eight transition-metals (V, Mn, Fe, Co, Ni, Cu, Zn, and Mo), which naturally occur in a living organism, are essential for the control of various metabolic and signaling pathways. They are also the key elements in the catabolism of hyaluronan in the joint."

Now, when an L-Ascorbic acid (C6H8O6) is metabolized, the following reaction occurs.

L-ascorbic acid (C6H8O6) Dehydroascorbic acid (C6H6O6) + hydrogen (H2) + 8 transition-metals (V, Mn, Fe, Co, Ni, Cu, Zn, and Mo)

The released hydrogen gas can get oxidized by oxygen in the air to form hydrogen peroxide, as shown below.

H2 + O2H2O2

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