Identification of 2,5-dimethyl-3-furanthiol in coffee by two dimensional GC TOF MS

2,5-dimethyl-3-furanthiol is an important aroma constituent widely used in flavorings for food stuff. While its occurrence in food is mentioned several times, its unequivocal identification is not clear. In an SDE extract of ground coffee beans, using a pre-separation step and two dimensional GC TOF MS, its occurrence in ground coffee was confirmed. Targeted analysis with modern instrumentation proved to be a powerful technique to detect such a minor constituent in a complex matrix.