Lemmy Shitpost
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Partnered Communities:
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10.LinuxMemes (Linux themed memes)
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Oxidation is how red blood cells collect oxygen to pass to the rest of the body. In fact it is iron in hemoglobin that "rusts" to collect the oxygen. You would die if your blood didn't "rust".
Antioxidants have nothing to do with this.
The process you’re thinking of is oxygenation, not oxidation. Oxygenation is the binding of oxygen to other molecules, oxidation is the loss of electrons. When the iron in hemoglobin oxidizes (from Fe2+ to Fe3+) it stops binding with oxygen, and if it oxidizes further (to Fe4+) it can start oxidizing other molecules in your body. Your body has enzymes to reduce the iron back to a reactive state, but antioxidants also play a role in reducing oxidized molecules.
It's actually the opposite. When the oxygen binds to the iron it changes from Fe+2 to Fe+3 so the binding of oxygen to the iron in hemoglobin is an oxidation process. At that point it can't take more oxygen until it releases it in a reduction reaction.
The term "oxidation" is originally derived from reactions where a substance combines with oxygen but has since been generalized to any reaction where an electron is given up. So "oxidation" is the broader term and "oxygenation" is the specific oxidation reaction that results in binding oxygen.
ooh, then I must have gotten the terms wrong...
What I was thinking were the free radicals that are generated during basically most oxygen related reactions in the body, I thought that was called oxidation (at least, in terms of the body).
So, you know anything about how (or if) antioxidants are used against free radicals?
That actually depends on the type of antioxidant. The body has certain innate antioxidants (e.g. enzymes like catalase) to deal with reactive oxygen species but antioxidants that you get through your diet are also very important in that system (like vitamin c and e to prevent oxidation of cell membranes for example). Also some phytochemicals (like polyphenols) can act as an antioxidant.
Thanks, this is an unexpected image and a fun fact for the next party.