Yeast Fermentation

yeast fermentation, home distillery, wine industry job, killing temperature

Fuel alcohol fermentation, yeast fermentation,

Distillation is often made in a two-step process. First one propagates up the yeast to, for example, 350,000,000 cells per ml in a propagation tank. Then this slurry is transferred to a much larger batch of mash, where it is used as yeast at the rate of 5,000,000 to 15,000,000 cells per ml. This gives a great savings in yeast cost.

Temperature Tolerant Turbo yeast is excellent for this application, providing the following benefits:

Ferments sugar, corn, molasses, barley, wheat and similar

High osmo tolerance, stands 28% sugar or equivalent

High temperature tolerance, 39C for 14%

High alcohol tolerance, easily ferments to 16%

Faster fermentation, increased production

Purer fermentation, 1% less fusel replaced by pure alcohol

More information

The fermentation in the first (propagation) tank is always made using 3.6 Kg Temparature Tolerant Turbo Yeast per 1000 liter mash. Then it is tranferred to the next fementer with many times more of the same mash.

Nutrient instructions for fermentation

1. Measure the nitrogen level in the mash in Fermenter 2.

2. Add missing nitrogen (preferably as urea) up to 0.3 gram/liter for 16%.

3. Add more nitrogen for faster fermentation up to maximum 0.5 gram/liter, if your cooling system can control such violent fermentation.

Control pH as you usually do, same levels.

Killing Temperature information

The recommended fermentation temperature (for 16% alcohol) with good cooling/temperature control is 30C. With very good temperature control, fermentation can be made in 33C. With state-of-the-art outstanding temperature control (that never exceeds 35C), fermentation can be made in 35C to increase fermentation speed. In alcohol plants--where all alcohol that leaves with the carbon dioxide is trapped--such high fermentation temperature does not result in a lower yield.

The yeast always produces 16% alcohol. You are always sure it works. We are aware that some distilleries test the limits and produce 17-18%. But in such cases you are on the edge, and are doing this on your own risk. 16% always works and our recommendation is to stay there.

Free Sample (commercial distilleries only)

Send an email to strand@partyman.se and ask for a free 90-gram sample. Try this with your own

mash in laboratory scale and then contact us again.

For more info about our Turbo yeast, click here.

Essences

We produce the world's largest assortment of essences, and as far as we know, the world's highest quality.

We supply essence for everything from liquors like gin, rum, aquavit and whisky, to fine liqueurs, bitters, semi bitters, fruit vodkas and candy shots. We produce over 200 different essences from stock.

Never compare an essence with a flavor. A flavor is simple and rough compared to an essence. Our essences often contain different natural (some times nature-identical) flavors. But on top of this we have natural extracts from our own production, natural oils, herb extract, oak extract, etc. Our simplest essence contains 8 different ingredients - one is a flavor.