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Proposed reaction pathways for a) the formation of glyoxal hydrate (Path a) and an additional pathway for the formation of formate (Path b). b) Retro‐aldol processes describing the formation of formaldehyde hydrate, glycolaldehyde and dihydroxyacetone. c) aldol reaction of glycolaldehyde yielding erythrulose and 2‐keto‐hexoses (tagatose and sorbose) via carbonyl migration.
