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Various alcohol compounds during the alcoholic fermentation by oxidation the primary alcohols arise. The artificial word consists of parts of the Latin term "alcohol (us) dehydrogenatus", which means "dehydrated alcohol" or "alcohol deprived of hydrogen". In terms of quantity, formaldehyde (methanal) is the most important aldehyde. It is used as a disinfectant (formalin solution) and for the production of organic preparations. The most significant aldehyde in wine making is acetaldehyde, Aldehydes also play a role Polymerization reactions (Caking of minute particles) a role. They can also be positive in weak concentrations Aroma contribute, for example, the phenol aldehyde vanillin, Certain aldehydes are the sensory cause of Firngeschmack (Altersfirn) and air taste (Aldehydton). See a list of all wine ingredients below total extract,

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