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Fermentation Process of Vinegar

Views: 82     Author: Site Editor     Publish Time: 2024-08-28      Origin: Site

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The production of vinegar is an oxidative fermentation process in which acetobacter utilizes oxygen (O2) from the air and a dilute ethanol solution to produce water and acetic acid. Vinegar consists of an aqueous solution of acetic acid, water, and trace amounts of other chemicals. The concentration of acetic acid can vary. Vinegar contains about 5-8% acetic acid by volume.

Fermentation Process of Vinegar


Step 1 - Alcoholic Fermentation

Vinegar can be made from many fruit and grains, such as grapes, apples, oats, malt, barley, sugar, beer, rice, etc. The juice formed by these raw materials contains sugars, which yeast uses to produce alcohol and carbon dioxide gas.

(Yeast) + Sugar → Ethanol + 2 CO2


Step 2 – Acetic Acid Fermentation

Two well-known acetic acid bacteria are – Gluconobacter and Acetobacter. Acetobacter is a relatively better acid-producing bacteria. Under the action of Acetobacter, the alcohol produced in the previous process reacts with oxygen in the atmosphere to produce acetic acid and water.

Usually, the different flavors and aromas of vinegar are caused by organic acids and esters in fruits or other raw materials.

(Acetobacter) + Ethanol → Acetic acid + H2O


Different methods of vinegar production

Vinegar production technologies range from traditional techniques using surface culture and wooden barrels (Orleans process) to submerged fermentation. Many foods contain vinegar as a key ingredient. The necessity of large quantities of vinegar requires the use of industrial fermentation systems that can reliably produce controlled amounts of vinegar. A large number of technological innovations have been made to increase the industrial production of vinegar. Generally speaking, these improvements speed up the process of converting ethanol into acetic acid when acetic acid bacteria are present.

Vinegar production flow chart


Fruit grain extract + yeast

Alcohol fermentation

Acetic acid fermentation

Maturation

Filtration

Pasteurization

Vinegar bottling


Pretank offers a range of production equipment for producing vinegar, including vinegar fermentation tanks, vinegar storage tanks, etc. For more information, please contact our experts.


Provide stainless steel tanks solutions for liquid processing of STORAGE,FERMENTING, HEATING,CHILLING, BLENDING, DISTILLING, MASHING AND BOILING.

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