Characterization of Bitter-Tasting Oxylipins in Poppy Seeds (Papaver somniferum L.)

Article abstract of DOI:10.1021/acs.jafc.9b06655

Activity-guided fractionation of poppy seed (Papaver somniferum L.) extracts and analysis of fatty acid oxidation model experiments, followed by liquid chromatography time-of-flight mass spectrometry, tandem mass spectrometry, and one-/two-dimensional nuclear magnetic resonance experiments, revealed the chemical structures of five bitter-tasting fatty acids (1-5), three monoglycerides (6-8), six C18-lipidoxidation products (9-14), and four lipid oxidation degradation products (15 and 17-19) as well as two previously unreported monoglyceride oxidation degradation products, namely, 9-(2′,3′-dihydroxypropyloxy)-9-oxononaic acid (1-azeloyl-rac-glycerol, 16) and 1-(2′,3′-dihydroxypropyl)-8-(5″-oxo-2″,5″-dihydrofruan-2″-yl)-octonoate (1-ODFO-rac-glycerol, 20). Sensory studies exhibited low bitter taste threshold concentrations between 0.08 and 0.29 mmol/L, particularly for the higher oxidated C18-fatty acids trihydroxyoctadecenoic acid (THOE, 12), 12,13-dihydroxy-9-oxo-10-octadecenoic acid (12,13-diOH-9-oxo, 13), and 9,10-dihydroxy-13-oxo-11-octadecenoic acid (9,10-diOH-13-oxo, 14) as well as for the lipidoxidation degradation products 4-hydroxy-2-noneic acid (4-HNA, 17), 4-hydroxy-2-docecendienoic acid (HDdiA, 18), and 8-(5′-oxo-2′,5′-dihydrofuran-2′-yl)-octanoic acid (ODFO, 20).

Full text of DOI:10.1021/acs.jafc.9b06655

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Chemistry and Biology of Aroma and Taste
Characterization of Bitter-Tasting Oxylipins
in Poppy Seeds (Papaver somniferum L.)
Johanna Lainer, Corinna Dawid, Andreas Dunkel, Peter Gläser, Stephanie Wittl, and Thomas Hofmann
J. Agric. Food Chem., Just Accepted Manuscript • DOI: 10.1021/acs.jafc.9b06655 • Publication Date (Web): 16 Dec 2019
Downloaded from pubs.acs.org on December 18, 2019
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ACS Paragon Plus Environment

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Journal of Agricultural and Food Chemistry
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ACS Paragon Plus Environment

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Journal of Agricultural and Food Chemistry
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ACS Paragon Plus Environment

Page 21 of 52
Journal of Agricultural and Food Chemistry
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ACS Paragon Plus Environment

Journal of Agricultural and Food Chemistry
Page 22 of 52
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ACS Paragon Plus Environment

Page 23 of 52
Journal of Agricultural and Food Chemistry
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ACS Paragon Plus Environment

Journal of Agricultural and Food Chemistry
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ACS Paragon Plus Environment

Page 25 of 52
Journal of Agricultural and Food Chemistry
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ACS Paragon Plus Environment

Journal of Agricultural and Food Chemistry
Page 26 of 52
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ACS Paragon Plus Environment

Page 27 of 52
Journal of Agricultural and Food Chemistry
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ACS Paragon Plus Environment

Journal of Agricultural and Food Chemistry
Page 28 of 52
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ACS Paragon Plus Environment

Page 29 of 52
Journal of Agricultural and Food Chemistry
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ACS Paragon Plus Environment