Abstract
A series of branched esters (methyl 2,2-dimethylpropanoate to ethyl 2-ethylhexanoate) were purified by preparative gas chromatography and their odor thresholds were determined using sensory panel methods. The odor thresholds reached a minimum with the butanoate and pentanoate esters. In general, the branched esters have much lower odor thresholds than their straight chain counterparts. Replacing methyl and ethyl branch substituents with mercapto- or hydroxy-groups resulted in higher odor thresholds.
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