among samples. HEMF (4-hydroxy-2(or 5)-ethyl-5(or 2)-methyl-3(2H)-furanone;
homofuraneol) represents sweet caramel-like
in sake has not been reported
odor and is reported as a key odorant of soy sauce but its presence
(30). Although HEMF had high VIP
(1.35) in our result, the standard error was large (0.578).
Hydrogen sulfide, methyl mercaptan and dimethyl trisulfide
sul
the analytical method in this study could not detect hydrogen
(DMTS) are known as main components of sulfury odor, although
fide and methyl mercaptan. The sensory score of sulfury odor
significantly correlated to that of sweet aroma/caramel/burnt
odor (R ¼ 0.700, p < 0.001), maybe because both attributes are
partly common between them (
related with aging of sake. Thus the selected components were
Fig. 3C, D). DMTS was selected
model.
only for sulfury model and not for sweet aroma/caramel/burnt