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Comparison of the Aroma Profiles of Intermediate Wheatgrass and Wheat Bread Crusts

1
Department of Food Science and Technology, 2015 Fyffe Road, The Ohio State University, Columbus, OH 43210, USA
2
Department of Food Science and Nutrition, 145 Food Science and Nutrition Building, 1334 Eckles Avenue, University of Minnesota, St. Paul, MN 55108, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Michael C. Qian and Yanping L. Qian
Molecules 2019, 24(13), 2484; https://doi.org/10.3390/molecules24132484
Received: 13 June 2019 / Revised: 28 June 2019 / Accepted: 3 July 2019 / Published: 6 July 2019
(This article belongs to the Special Issue Instrumental Analysis for Volatile Odorants and Flavours)
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Abstract

The aroma profiles of bread crusts made from intermediate wheatgrass (Thinopyrum intermedium) and whole wheat (Triticum aestivum) flours were compared. Based on gas chromatography/mass spectrometry/olfactometry analysis, twenty-four odorants were identified and further quantified. The concentrations of seventeen compounds were significantly different between intermediate wheatgrass and whole wheat bread crusts, of which sixteen compounds were higher in the whole wheat sample. The aroma profiles of the bread samples were subsequently characterized using sensory descriptive analysis (DA) and indicated that the roasted attribute was perceived at a significantly higher intensity in the whole wheat sample due to a greater amount of Maillard reaction compounds. Alternatively, bran and green notes were perceived at higher intensities in the intermediate wheatgrass sample, however they were not attributed to the presence of specific compounds but rather to a change in the aroma composition. Aroma recombination DA of the whole wheat and intermediate wheatgrass aroma models was similar to the original aroma profiles of the bread samples, demonstrating the sensory relevance of the identified odorants. View Full-Text
Keywords: whole wheat; intermediate wheatgrass; bread; aroma; Maillard reaction; Thinopyrum intermedium whole wheat; intermediate wheatgrass; bread; aroma; Maillard reaction; Thinopyrum intermedium
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Paravisini, L.; Sneddon, K.A.; Peterson, D.G. Comparison of the Aroma Profiles of Intermediate Wheatgrass and Wheat Bread Crusts. Molecules 2019, 24, 2484.

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