Microbrewery Yeast Harvesting I

For Nanobrewery,micro brewery,commercial brewery, Brewers commonly repitch yeast to ferment batch after batch to save money and coax out the complex flavors and higher flocculation rates that Saccharomyces yeast can develop over multiple generations, particularly from the second to the third. But in order to maximize yeast function and longevity, it’s important to be strategic and maintain consistency, along with how long you store your slurry and under what conditions. Tiantai brewtech have professional design on yeast pitching and yeast harvest. Following are some questions that we might doubt in actual brewing.
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1. Could we keep Yeast in the Fermenter?
It is not recommended. Because yeast acts as an insulator, the middle layer of the yeast cake that forms at the bottom of a cylindroconical connical beer fermenter mcan heat up. When yeast temperature rises, life expectancy will fall.

2. When could we start to to harvest yeast ?
In a cylindroconical beer fermentation tank it’s wise to remove yeast slurry shortly after fermentation finishes and beer has chilled to lower temperature, typically within 48 hours. In an open vessel, cropping should happen once gravity has fallen at least 50%.

3. Which Yeast Harvesting Method is Best for your brewery?
While skimming off the top of an open vessel results in cleaner, more predictable and more viable yeast for repitching, modern brewers tend to employ conical tanks more often. With their cone-shaped bottoms, Beer Fermenters allow brewers to easily discharge trub and collect flocculated yeast.

4. Which Part of the Yeast should we to Extract?
In a conical tank, the best yeast cells to harvest settle into a middle layer at the bottom between the first layer, consisting of trub and cells that flocculate early, and the top layer.

In an open vessel, discard the first “dirt” skim, harvest the second skim that rises, and toss any subsequent ones.

Tiantai brewtech can provide you turnkey solution for microbrewery. If you require any microbrewery equipment, nano brewery equipment,commerical brewery equipment, feel free to contact us for a proposal.
Thanks for your reading.
Helen
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