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Oakwood absolute

Gỗ sồi absolute

Quercus robur, Quercus petraea, Quercus alba

Oak absolute, Oak chips extract, Bois de chêne absolue

Fagaceae · Gỗ sồi (dăm, thường đã sấy hoặc nướng) · Oak wood (chips, often seasoned or toasted) · Solvent-extracted from wood


Aroma

Barrel, vanilla, coconut, dry wood, a little smoke and clove. Warm, sweet and dry, evoking whisky and cognac.


Safety

Oakwood absolute has no dedicated standard in the IFRA 51 index. Eugenol, if present, is IFRA-restricted (2023) and an EU-labelled allergen above threshold.

Store dark, sealed and cool.


Usage guidelines

Note
Base
Form
Absolute, wood extract
Role
Barrel note, sweet wood
Signature molecule
Oak lactone (whisky lactone)
Storage
Dark, sealed, cool

Chemistry

Key constituents
cis- and trans-Oak lactonepresent, odour-defining
Vanillinpresent
Eugenolpresent
Guaiacolpresent in toasted wood
Syringaldehydepresent

Origins

France · United States


Notes

European oak (Quercus robur, Q. petraea) and American white oak (Q. alba) are the barrel woods for ageing wine and spirits. During ageing the liquid draws aromatic compounds from the wood: lactones, vanillin and phenols. These are also the odorants of oakwood absolute.

Oak lactone, also called whisky lactone, gives a coconut and sweet-wood note. Vanillin comes from lignin breakdown. When barrels are toasted inside, vanillin, guaiacol and smoky phenols increase.

An absolute is made in two steps. The raw material is extracted with a non-polar solvent such as hexane to give a waxy concrete. The concrete is then washed with ethanol, chilled to precipitate waxes, filtered and freed of alcohol. What remains is the absolute.

The raw material is oak wood, which may be seasoned or toasted as for barrels. Toast level strongly shapes odour: light toast is sweet and coconut-like, heavy toast smoky and coffee-like.

In perfumery oakwood absolute serves boozy, woody, tobacco and gourmand accords. It pairs with cognac, tonka, vanilla, tobacco and leather.

Oakmoss is a lichen growing on oak, not an extract of oak wood. The two materials differ in odour and regulation.

Oakwood absolute is usually a brown paste. On evaluation coconut and vanilla appear first, then dry wood and light smoke. In formulas it gives boozy and tobacco notes a woody depth. It is also used in food and beverage flavours for a barrel note. The toast level should be stated on the certificate.


Sources

  1. IFRA Standards, 51st Amendment: Index of IFRA Standards (notified 30 June 2023)
  2. PubChem compound record: Whisky lactone
  3. Studies on oak wood volatiles and toasting (oak lactone, vanillin, guaiacol)
  4. The Good Scents Company Information System, material entries