ethyl butyrate

950 µg per capsule

Ethyl butyrate, like tinned pineapple or mango”

Certified beer flavour standard used to train professional beer tasters to recognize and scale the intensity of ethyl butyrate character. Ethyl butyrate is produced by both ale and lager yeasts during fermentation. It contributes a pleasant tropical fruit ester note to beer.

Food grade | free from sensory impurities | extensively tested | safe to smell and taste.

Flavour cards

Flavour standard information

Technical specification

The best way to detect ethyl butyrate 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.
Amount of flavour per capsule
950 µg per capsule
The flavour threshold of ethyl butyrate in beer is 300 µg / l.
Ethyl butyrate is produced by both ale and lager yeast during fermentation. The amount produced depends on wort composition, yeast strain and fermentation conditions. The presence of ethyl butyrate in beer can be indicative of brewhouse hygiene problems, with the compound being formed during fermentation as a result of esterification of butyric acid produced by contaminant bacteria in the brewhouse..

Professional beer tasters can confuse ethyl butyrate with the following flavours

  • Butyric acid
  • Acetaldehyde
  • Isoamyl acetate
Ethyl butyrate contributes a pleasant ‘tropical fruit ester’ note to ales and lagers. It is associated with use of particular yeast strains and hop varieties.
CAS registry number
The CAS registry number of ethyl butyrate is 105-54-4.
Other names
  • butanoic acid ethyl ester
  • butyric acid ethyl ester
  • butyric ester
  • butyric ether
  • ethyl butanoate
  • ethyl n-butyrate
Ethyl butyrate is one of a several such esters found in beer. Others include isoamyl butyrate, ethyl isobutyrate, and isoamyl isobutyrate.
Threshold distribution
Capsules per pot
Legal notices
This product is protected by the following trade marks and patents:
  • US Patent no. D679900
  • European Community Trade Mark
    Registration no. 009937574
  • European Community Trade Mark
    Registration no. 009856527
  • US Trade Mark Registration no. 4345057
  • US Trade Mark Registration no. 4345056
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ethyl butyrate beer flavour standard
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