Noun
autoxidation (usually uncountable, plural autoxidations)
(chemistry) A spontaneous oxidation reaction that results in the slow, flameless combustion of a material.
Simple natural phenols can lead to the formation of B-type procyanidins in wines "Tandem mass spectrometry of the B-type procyanidins in wine and B-type dehydrodicatechins in an autoxidation mixture of (+)-catechin and (−)-epicatechin". Source: Internet
Three different mechanisms can form these; autoxidation, secondary oxidation to lipid peroxidation, and cholesterol-metabolizing enzyme oxidation. Source: Internet