butyric acid

4.5 mg per capsule

Butyric, rancid, like baby vomit”

Certified soft drinks flavour standard used to train professional tasters to recognize and scale the intensity of butyric character. Butyric acid contaminates soft drinks via sugar syrups. Growth of contaminant bacteria in such syrups leads to its formation. This note can also be occasionally caused by penetration of adhesive label components into soft drinks which have been packaged in plastic bottles. Butyric acid imparts a rancid flavour, reminiscent of baby vomit, and is consequently universally rejected by consumers.

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

Flavour cards

Flavour standard information

Technical specification

Assessment
The best way to evaluate rancid flavours in soft drinks arising from butyric acid is as follows. Cover the sample 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
4.5 mg per capsule
Threshold
The flavour threshold of butyric acid in soft drinks is 1.5 mg / l.
Origins
Butyric acid is produced in sugar syrups by bacteria, including Bacillus spp and Clostridium spp. It is also occasionally caused by penetration of adhesive label components into soft drinks which have been packaged in plastic bottles.
Importance
Butyric acid imparts a rancid note to soft drinks, reminiscent of baby vomit, which is especially prominent in products of low pH value. While regarded as desirable in some types of confectionery, it is generally rejected by consumers of soft drinks.
CAS registry number
The CAS registry number of butyric acid is 107-92-6.
Other names
  • butanoic acid
  • butanic acid
  • n-butanoic acid
  • 1-butyric acid
  • n-butyric acid
  • ethyl acetic acid
  • 1-propane carboxylic acid
  • propyl formic acid
Remarks
The intensity of butyric flavour notes in soft drinks can be increased by the presence of other fatty acids (including valeric and Isovaleric acids) and by carbonyl compounds such as 2,3-butanedione.
Threshold distribution
Graph
Capsules per pot
10
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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