Everyone knows that alcohol is fermented. But why ferment you know? Fermentation begins when yeast is added to the cooled wort. The whole fermentation process can be divided into: yeast recovery stage, aerobic respiration stage, and anaerobic respiration stage. After the yeast is inoculated, the physiological activity is restored under the condition of oxygenation of the wort. The amino acid in the wort is the main nitrogen source, and the fermentable sugar is the main nitrogen source for respiration.
what is fermentation
Through the action of yeast, fermentable sugars are converted into approximately equal amounts of ethanol and carbon dioxide gas. The two basic methods of fermentation in brewing are top fermentation and bottom fermentation.
Top fermentation
Bottom fermentation
live yeast
Each type of yeast produces different molecules, resulting in different beer flavors. Furthermore, temperature, glucose concentration, and various other parameters affect how the yeast behaves and thus which molecules are formed! Some examples of the types of molecules formed are:
- Esters: The “fruity” aroma of beer
- Ketones (eg: diacetyl): Some of these molecules give beer its honey and butterscotch taste
- lAcetaldehyde
- lSulfur volatiles
- lOrganic acid
- Fatty acid
Yeast recovery stage
aerobic respiration stage
Anaerobic respiration stage
Yeast breeding period 8-16 hours after adding yeast to wort. When small bubbles appear and form white foam, they will enter the fermentation tank immediately after breeding for 20 hours. After 2-3 days of fermentation, the wine turns brown as hop resin and protein-tannin complexes begin to separate. Artificial cooling is required, but not too violent, to avoid premature precipitation of yeast and affect fermentation. After 7-8 days of fermentation, the foam retracts and forms a cap, skimming off the precipitated polyphenol complexes. Hop resin, yeast cells, and other impurities should be cooled now to make the yeast precipitate.
The fermented liquor after the main fermentation of the wort is called tender beer. Now, the carbon dioxide content of the wine is insufficient, and the volatile substances such as diacetyl, acetaldehyde, and hydrogen sulfide are not reduced to a reasonable level. The mouth of the wine is immature and not suitable for drinking.
Top-fermented beer matures , equipment turns around , and the beer has a unique flavor but a short shelf life. Generally, the post-fermentation period is not used, but the glue is added. After the first stage of clarification, artificial carbon dioxide is used to achieve saturation.
How long does it take to ferment during the brewing process?
Does the type of yeast affect fermentation?
Selection of Fermentation Tanks
Basic structure and performance of conical fermenter
Structure and size selection of conical fermenter
Material selection for conical fermenter
Plans to build a turnkey craft brewery
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Best beer brewing system manufacturer from china Micet Craft is a professional beer brewing system manufacturer in China. We mainly produce high-end customized turnkey brewing systems. Whether you are planning to open a nano-brewery, microbrewery, or commercial brewery, we can provide you with the most complete turnkey solution. Our beer brewing systems are all price-competitive
Beer Brewery Equipment Manufacturer The brewing supplies provided by Micet Craft can support your brewing needs from small batches of micro beer brewing equipment to 100 barrels capacity. Micet Craft has reached cooperation with many breweries around the world, we can design and manufacture professional brewing systems for breweries, including cellar beer brewing equipment and other
China stainless steel fermentation vessels manufacturer The fermentation tank is where the beer carry out the fermentation process, it provides a place suitable for life activities and metabolism for microorganisms. To adapt to the use of different sizes of breweries, Micet Craft produced a variety of sizes and specifications of fermentation tanks. Customers can choose
Professional bright Beer tank manufacturer from China The bright tank is a vessel for storing and carbonated beer, it is also called the brite tank. The bright tank is an important part of the workflow of professional beer brewers. It can be used to store and carbonate beer, thus eliminating the trouble of cleaning beer
China brewing equipment manufacturer and suppliers Micet Craft has cooperated with breweries in many countries around the world to provide them with brewing equipment. We provide customers with turnkey brewery solutions, which include designing, manufacturing and installing customized breweries. The Micet Craft team has decades of experience in the manufacturing of brewing equipment, we not
Best brewhouse equipment manufacturer from china Brewing good beer requires brewhouse equipment. Whether you are brewing beer for home, business or brewery, Micet Craft can provide a turnkey solution according to the daily output you need. We have brewhouse equipment with 2 vessels, 3 vessels and 4 vessels, the unique design allows you to do decoction
Professional beer filling machine manufacturer Beer filling machine is the core equipment of the beer production line. Our beer filling system uses stainless steel as the production material. Stainless steel is not easy to wear, and it is easy to clean. Micet Craft provides you with a cheap and efficient way of filling beer. We
Best beer brewing system manufacturer from china Micet Craft is a professional beer brewing system manufacturer in China. We mainly produce high-end customized turnkey brewing systems. Whether you are planning to open a nano-brewery, microbrewery, or commercial brewery, we can provide you with the most complete turnkey solution. Our beer brewing systems are all price-competitive