2-isobutyl-3-methoxypyrazine

60 ng per capsule

Earthy, like green pepper”

Certified soft drinks flavour standard used to train professional tasters to recognize and scale the intensity of earthy character. 2-Isobutyl-3-methoxypyrazine is a potent off-flavour with a very low flavour threshold. It is introduced to soft drinks through contaminated formulation water or process water. It imparts an earthy note, reminscent of green peppers.

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 assess earthy flavours in soft drinks and juices caused by 2-isobutyl-3-methoxypyrazine is as follows. Without covering the glass, swirl the sample to release the aroma. Take a single short sniff. Repeat as necessary.
Amount of flavour per capsule
60 ng per capsule
Threshold
The flavour threshold of 2-isobutyl-3-methoxypyrazine is 20 ng / l.
Origins
2-Isobutyl-3-methoxypyrazine is introduced to soft drinks through use of contaminated formulation water or process water. This earthy taint is formed by Actinobacteria in lakes, reservoirs and water distribution systems.
Importance
2-Isobutyl-3-methoxypyrazine (2-IMP) is a potent off-flavour with a very low flavour threshold. It imparts an unpleasant earthy note which is reminiscent of green peppers. It may occur in admixture with other methoxypyrazines.
CAS registry number
The CAS registry number of 2-isobutyl-3-methoxypyrazine is 24683-00-9.
Other names
  • 2-methoxy-3-(2-methylpropyl)pyrazine
  • isobutyl methoxypyrazine
  • 3-isobutyl-2-methoxypyrazine
  • galbanum pyrazine
  • 2- methoxy-3-(2-methyl propyl) pyrazine
  • 2-methoxy-3-(2-methylpropyl)pyrazine
  • 2-methoxy-3-isobutyl pyrazine
  • 2-2-methyl propyl-3-methoxypyrazine
Remarks
Methoxypyrazine taints can be caused by several compounds, of which 2-isobutyl-3-methoxypyrazine is only one. Water treatment practices should remove the methoxypyrazine prior to use.
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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