“Rancid oil, like potato chips or vegetable oil”
Water flavour standard used to train professional water tasters to recognize and scale the intensity of rancid oil character.
trans,trans-2,4-heptadienal is formed by algae in lakes and reservoirs. It is produced by both actively growing cells and as a result of the decomposition of dead cells. This compound imparts a rancid odour, reminiscent of cod liver oil. At higher concentrations the flavour is perceived as fishy.
Food grade | Free from sensory impurities | Extensively tested | Safe to smell and taste.