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isovaleric acid

Isovaleric

BEER

£69.00£99.00


 

Quantity

Product Description

Isovaleric, like cheese or sweaty socks”

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

Isovaleric acid imparts a cheesy off-flavour to beers. The flavour arises from use of hops or hop products which have deteriorated in quality prior to use.

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

IMPORTANCE

Isovaleric, sweaty, cheesy flavour notes are characteristic flavours of some beer styles, eg India Pale Ale. Typical ‘cheesy’ characters are often associated with beers of very high bitterness. In pale lager beers, isovaleric character is regarded as an off-flavour.

ORIGINS

Isovaleric acid is derived from breakdown of alpha-acids in hops. It is imparted to beer by use of high hopping rates or degraded hops or hop extracts. Isovaleric acid can occasionally be produced by wild yeasts, specifically Brettanomyces spp. which may be present either as contaminants or introduced into beer for conditioning purposes.

HOW TO TASTE

The best way for assessors to evaluate isovaleric flavour in beer is as follows. Cover the beer with your hand and swirl the glass to release the aroma. Remove your hand and take a single long sniff. Repeat as necessary.

CAS NUMBER

The CAS registry number of isovaleric acid is 503-74-2.

Additional Information

Weight 0.06 kg
Dimensions 0.85 × 0.85 × 0.35 cm
process

brewhouse, ingredients

flavour

chemical, microbiological spoilage, off-flavour, oxidation, positive character

chemical

acids

capsules per pot

10 capsules, 6 capsules

kit format

full pots of capsules

sector

beer

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