Journal
FOOD CHEMISTRY-X
Volume 20, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.fochx.2023.100899
Keywords
Sheldrake duck; Age; Volatile flavor compound; Free fatty acid
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This study explored the characteristic aroma flavor and its formation mechanism of old ducks. Significant differences in aroma flavor were found between young ducks and old ducks of different ages. Gas chromatography-mass spectrometry analysis identified characteristic flavor compounds in old ducks, and correlation analysis revealed the importance of unsaturated free fatty acids in the formation of the duck's flavor.
In order to explore the characteristic aroma flavor and its formation mechanism of old ducks, two ages (30 days and 60 days) of young ducks and three ages of old ducks (300 days, 900 days, and 1500 days) were selected and studied. An electronic nose was applied to evaluate the overall aroma flavor, and the result showed significant differences between the five duck samples. By gas chromatography-mass spectrometry (GC-MS), forty-eight volatile flavor compounds were detected, including seven aldehydes, six esters, five alcohols, five nitrogen compounds, twenty-one hydrocarbons, and four others. Among these compounds, twelve components, such as hexanal and dimethyl anthranilate, were considered as the characteristic flavor compounds along with duck aging. Furthermore, correlation analysis indicated that meat's unsaturated free fatty acids, especially linoleic acid (C18:2), were responsible for the duck's characteristic flavor formation. These data contribute to the flavor research and identification of old ducks.
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