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Quantification of Aroma Compounds in Parmigiano Reggiano Cheese by a Dynamic Headspace Gas Chromatography-Mass Spectrometry Technique and Calculation of Odor Activity Value

Department of Food Science and Nutrition, University of Minnesota, St. Paul 55108

Corresponding author:
e-mail:
Michael.qian{at}orst.edu.

Potentially important aroma compounds in Parmigiano Reggiano cheese were quantified. Free fatty acids were isolated with ion-exchange chromatography and quantified by gas chromatography. Neutral aroma compounds were quantified with a purge-trap/gas chromatography-mass spectrometry with selective mass ion technique. Odor activity values were calculated based on sensory thresholds reported in literature. The calculated odor activity values suggest that 3-methylbutanal, 2-methylpropanal, 2-methylbutanal, dimethyl trisulfide, diacetyl, methional, phenylacetaldehyde, ethyl butanoate, ethyl hexanoate, ethyl octanoate, acetic, butanoic, hexanoic, and octanoic acids are the most important aroma contributors to Parmigiano Reggiano cheese.

Key Words: Parmigiano Reggiano cheese • aroma • odor activity value • purge-trap

Abbreviation key: OAV = odor activity value

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