oxidation

With black tea, after the leaves are picked they're exposed to air, which leads to oxidation.

This allows electrons to be removed from the absorbed electron donors through solid-state ET oxidation reactions, resulting in the accumulation of holes in the donors inside the nanotube.

The wine has a lot of oxidations, and it’s a sulfur bomb on the nose.

The study also found these microbes are associated with improved fat oxidation and metabolic health.

Bacteria that consume the plant toxin sulfide are chemoautotrophs, using energy from sulfide oxidation to fuel the uptake of carbon dioxide to make their own organic carbon for growth.