Indole (Jasmine)


Associated Sensory Terms:

Pigs, Faecal Matter, Farmyard, Coliform


Indole is referred to as 'Jasmine' in the World Coffee Research Sensory Lexicon.

GMP Flavour Standard

FlavorActiV GMP Pharmaceutical Quality flavour reference standards can be added to alomst any liquid to impart a real flavour, off-note, or taint that's safe to both smell and taste. The flavour standards are sold individually in packs of 5 capsules, each capsule separately blister packed to provide flavour protection and prolonged shelf life.

Production adheres to strict pharmaceutical Good Manufacturing Practice (GMP) quality controls. FlavorActiV's dedicated GMP Flavour Centre is certified and regulated by the UK Government’s Medicine Regulatory & Healthcare Product Agency (MHRA) to a standard which far exceed ISO 9001, ISO 17025 or any food grade certification.

Beer Sensory

Cause of Flavour

This off-flavour can occur in all beverages - it is caused by coliform bacteria contaminating sugars and syrups. It can also occur during fermentation when bacteria are present.

Indole commonly occurs with DMS and with DMTS it is perceived as a septic like flavour.


+ Flavour Level: Variable - 5-15ug/l
+ Indole is detected as jasmine at very low levels, at high levels is becomes more faecal.

Coffee Sensory


An intense, slightly pungent, sweet, floral aromatic with underlying green, musty/dusty notes.

FlavorActiV's GMP Flavour Reference Standard Indole has undergone evaluation by the same research team behind the first World Coffee Research Lexicon, and has been approved for inclusion within the latest World Coffee Research Lexicon as a validated coffee flavour reference.

In early 2014, together with two of the coffee industry’s leading organisations, FlavorActiV developed and launched an advanced Calibrating Coffee Sensory Plan to provide cupper training, cupper calibration and coffee tools throughout the coffee supply chain. In 2016 FlavorActiV partnered with World Coffee Research to validate the use of FlavorActiV's GMP Flavour Standards as reference standards within WCR's lexicon. FlavorActiV's Indole is of the 24 validated flavour reference standards.

View all FlavorActiV GMP Coffee Flavour Standards.