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2,3-butanedione

Diacetyl

BEER

£75.00£109.00


 

Quantity

Product Description

Diacetyl, like butter, butter popcorn, or warm milk”

Certified beer flavour standard used to train professional beer tasters to recognize and scale the intensity of diacetyl character.

2,3-Butanedione is an off-flavour formed in beer either from the activities of brewer’s yeast or by contaminant lactic acid bacteria.

Food grade | Free from sensory impurities | Extensively tested | Safe to smell and taste.

IMPORTANCE

Diacetyl is a desirable flavour in some ales, stouts and lagers, eg Pilsner. It is considered an off-flavour in other lager beers. Considerable efforts are made by breweries to tightly control the concentration of 2,3-butanedione in beer.

ORIGINS

Diacetyl is produced in beer from a precursor (alpha-acetolactate) formed by brewer's yeast during fermentation. It can also be formed by contaminant lactic acid bacteria such as Lactobacillus and Pediococcus spp.

HOW TO TASTE

The best way to detect diacetyl flavour is to swirl the beer, without covering the glass, to release the aroma then take a single short sniff. Some people have difficulty detecting this compound on aroma and can best pick it up by a 'slickness' in the mouth.

CAS NUMBER

The CAS registry number of acetaldehyde is 431-03-8.

Additional Information

Weight 0.06 kg
Dimensions 0.85 × 0.85 × 0.35 cm
process

fermentation-maturation

flavour

bacterial, chemical, microbiological spoilage, off-flavour, oxidation, yeast-derived

chemical

carbonyls

capsules per pot

10 capsules, 6 capsules

sector

beer

kit format

full pots of capsules

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