During the manufacturing process of a canned coffee
drink, the coffee flavor changes. Heat processing during
sterilization especially affects the flavor of the coffee. It was
reported that the decrease in the roasty odor after heating of
the coffee drink was significantly caused by the decrease in the
amount of three sulfur compounds (2-furfurylthiol, methional,
and 3-mercapto-3-methylbutyl formate), and it was assumed that
these odorants were changed by oxidation, thermal degradation,
and/or hydrolysis (8). However, these sulfur odorants were part
of the important components involved in changing the coffee
flavor during heat processing. Therefore, the details of potent
odorants with respect to the flavor change in the coffee drink
have not yet been clarified.