styrene

65 µg per capsule

Plastics, like polystyrene”

Certified beer flavour standard used to train professional beer tasters to recognize and scale the intensity of plastics character. Styrene is an off-flavour produced by contaminant wild yeasts during fermentation. It can also arise as a taint through use of defective carbon dioxide gas supplies.

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

Flavour cards

Flavour standard information

Technical specification

Assessment
Te best way to detect plastic-like notes 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
65 µg per capsule
Threshold
The flavour threshold of styrene in beer is 20 µg / l.
Origins
Styrene is produced by contaminant wild yeasts during fermentation. It can also be introduced into beer as a taint through use of contaminated packaging materials or defective carbon dioxide gas.
Confusions

Professional tasters can confuse plastic-like flavours in beer resulting from styrene with the following:

  • Acetaldehyde
  • 4-Vinyl guaiacol
  • Eugenol
Importance
Styrene can be both an off-flavour and a taint in beer. It is associated with a moderate degree of consumer rejection in beer. It can be described by consumers as ‘chemical’, ‘plasticy’ or ‘contaminated’.
CAS registry number
The CAS registry number of styrene is 100-42-5.
Other names
  • ethenylbenzene
  • phenyl ethene
  • phenyl ethylene
  • styrol
  • styrolene
  • vinyl benzene
  • vinyl benzol
Remarks
Other compounds can impart a plastic-like note to beer. Samples containing this standard are best tasted in glass, rather than in plastic, to avoid loss of odour.
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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Plastics beer flavour standard - styrene
earn 8 points
£79.00

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