The MO-lactone(3-methyl-4-hydroxy octanoic acid γ-lactones) which is decisive compounds in flavor improvement during aging of whisky and/or brandy were extracted from 6 species of Quercus in Korea.
These compounds were identified by GC and GC/MS an...
The MO-lactone(3-methyl-4-hydroxy octanoic acid γ-lactones) which is decisive compounds in flavor improvement during aging of whisky and/or brandy were extracted from 6 species of Quercus in Korea.
These compounds were identified by GC and GC/MS and compared with these from the heartwood of mizunara(Q. mongohra Turez var. grosseserrata Rehd. et. Wils) in Japan.
The amount of MO-lactones in 6 oak species were determined comparatively.
The highest amounts of MO-lactone were showed in extract from Q. acutissima and
others are in order of Q. serrata, Q. alliena, Q. dentata, Q. variabilis and Q. mongolica.
Therefore these 6 oak species in Korea can be used possibly as raw materials of liquor aging cask. Q. acutissima was best possible species among them because it contained relatively hightest value of trans-MO-lactones.