Products Cited in Publications Worldwide Characterization and Profiling of Key Odorants in Roasted Hybrid American-European Hazelnuts

Characterization and Profiling of Key Odorants in Roasted Hybrid American-European Hazelnuts

Booth, Megan; Tello, Edisson; Peterson, Devin G

DOI: PMID:

Abstract

American-European hybrid hazelnuts (Corylus americana × Corylus avellana) are an emerging crop in the Upper Midwest of the United States that have been reported to have unique sensory characteristics compared to traditionally grown European hazelnuts. In this study, key odor-active compounds in a roasted hybrid hazelnut variety (C. americana × C. avellana) were identified and profiled across different hybrid hazelnut varietals to understand sensory differences. Gas chromatography/mass spectrometry/olfactometry analysis identified 33 odorants with high flavor dilution factors (FD ≥ 16) in the roasted hybrid hazelnut, including and as first reported hazelnut odorants. Descriptive sensory analysis profiles of the roasted hazelnut and an aroma recombination model consisting of 27 odorants quantified above their odor detection thresholds were not significantly different for the six evaluated attributes, confirming the aroma contribution of the identified odorants. Variation in all 33 aroma-active compounds across 12 hybrid and two European hazelnut varieties was visualized through principal component analysis and related to aroma profiles previously characterized by consumers.

Keywords

American-European hybrid hazelnuts ; gas chromatography/olfactometry ; aroma extract dilution analysis ; aroma recombination ; targeted chemical profiling

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