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Acetic acid bacteria (AAB) are a group of Gram-negative bacteria which oxidize sugars or ethanol and produce acetic acid during fermentation. [1] The acetic acid bacteria consist of 10 genera in the family Acetobacteraceae. [1] Several species of acetic acid bacteria are used in industry for production of certain foods and chemicals. [1]
An aqueous solution of acetic acid and trace compounds that may include flavorings. Usually, the acetic acid is produced by a double fermentation, converting simple sugars to ethanol using yeast, and ethanol to acetic acid by acetic acid bacteria. It is now mainly used in the culinary arts as a flavorful, acidic cooking ingredient, or in pickling.
After the fermentation process, the AAB oxidizes the ethanol into acetic acid. The main difference between mother of vinegar and mother of kombucha is the acetic acid tolerance. Vinegar has a higher acetic acid concentration than kombucha, therefore the species in mother of vinegar needs to tolerate higher levels of acetic acid. [10]
The “mother of vinegar”—a mixture of active acetic acid bacteria, yeast, and enzymes created during fermentation—gives this type of ACV a pleasantly funky, more complex flavor profile that ...
Acetic acid bacteria are characterized by the ability to convert ethanol to acetic acid in the presence of oxygen. Of these, the genus Acetobacter is distinguished by the ability to oxidize lactate and acetate into carbon dioxide and water. [2] Bacteria of the genus Acetobacter have been isolated from industrial vinegar fermentation processes ...
These lactic acid bacteria can carry out either homolactic fermentation, where the end-product is mostly lactic acid, or heterolactic fermentation, where some lactate is further metabolized to ethanol and carbon dioxide [19] (via the phosphoketolase pathway), acetate, or other metabolic products, e.g.: