Name: trans,trans-2,4-heptadienal
SKU: B-BE-4313-03-5
Price: 49.00 GBP
Availability: InStock

Product Description

“Rancid oil, like potato chips or vegetable oil”

Beer flavour standard used to train professional beer tasters to recognize and scale the intensity of rancid oil character.

trans,trans-2,4-Heptadienal is an off-flavour formed in beer during ageing. Beers made with oil-rich adjuncts such as maize are particularly susceptible to development of such flavours.

Food grade | Free from sensory impurities | Extensively tested | Safe to smell and taste.

IMPORTANCE

2,4-Heptadienal is an off-flavour in beer associated with ageing. Beers made with oil-rich adjuncts are most susceptible to development of this flavour.

ORIGINS

2,4-Heptadienal is formed in adjuncts, such as maize, during storage as a result of enzymic or non-enzymic lipid oxidation. Use of such materials can lead to development of this rancid oil flavour note in beer.

HOW TO TASTE

The best way to for tasters to detect rancid oil flavours in beer is as follows. Without covering the glass, swirl the beer to release the aroma. Take a single short sniff. Repeat as necessary.

CAS NUMBER

The CAS registry number of trans,trans-2,4-Heptadienal is 4313-03-5.

Additional Information

Weight	0.05 kg
Dimensions	.7 × .7 × .3 cm
process	brewhouse, ingredients
flavour	chemical, malt-derived, off-flavour, oxidation
chemical	aldehydes, carbonyls
capsules per pot	6 capsules
kit format	full pots of capsules
sector	beer